def main(argv):
path = os.path.expanduser('~/Documents/data_old/OPD40cm/20130809/')
airmasstables = ['G9348/timeairmass.dat', 'SA111773/timeairmass.dat', 'SA114750/timeairmass.dat']
#airmasstables = ['SA114750/timeairmass.dat']
targetRa = [21.8736111111111,19.6211111111111,22.6958333333333]
targetDec = [2.38888888888889,0.183055555555556,1.21055555555556]
sitelat =-25.3416666667
sitelong = 3.21148148148
#airmasstables = np.loadtxt(os.path.join(path,airmasstableslis),dtype='S',ndmin=1)
T0 = 2456514.
nightstart = 2456514.4
nightend = 2456514.85
timeStamp = np.linspace(nightstart,nightend,1e3)
lstStamp = [_skysub.lst(time,sitelong) for time in timeStamp]
ax = py.subplot(111)
ylim = [0,0.5]
color = ['b','r','g','y','c','m', 'k']
for i in range(len(airmasstables)):
data = np.loadtxt(os.path.join(path,airmasstables[i]),unpack=True,converters={0:datestr2JD})
secz = np.array([_skysub.true_airmass(_skysub.secant_z(_skysub.altit(targetDec[i],lst - targetRa[i],sitelat)[0])) for lst in lstStamp])
data[1] = np.array([_skysub.true_airmass(_skysub.secant_z(_skysub.altit(targetDec[i],_skysub.lst(time,sitelong) - targetRa[i],sitelat)[0])) for time in data[0]])
mm = np.bitwise_and(data[1] > 0, data[1] < 3)
py.plot(data[0][mm]-T0,np.log10(data[1][mm]),color[i]+'o')
py.plot(data[0][mm]-T0,np.log10(data[1][mm]),color[i]+'o')
mm = np.bitwise_and(secz > 0, secz < 3)
py.plot(timeStamp[mm]-T0,np.log10(secz[mm]),color[i]+'-')
py.plot([nightstart-T0,nightstart-T0],ylim,'k--',lw=1.1,alpha=1.0)
py.plot([nightend-T0,nightend-T0],ylim,'k--',lw=1.1,alpha=1.0)
py.ylim(ylim[1],ylim[0])
a=ax.get_yticks().tolist()
print a
newyticks = ['%.2f'%(10**(val)) for val in a]
print newyticks
ax.set_yticklabels(newyticks)
py.ylabel('airmass',size=18)
py.xlabel('JD - %.0f'%T0,size=18)
py.savefig(os.path.expanduser('~/Develop/SMAPs/Figures/plot_airmasses_obs.pdf'))
py.show()
return 0
def getTargets(T0,T1,RA,DEC,mask,texp,sitelat,sitelong): obsmask = mask tbin = 0 ra = RA[obsmask] dec = DEC[obsmask] mm = obsmask[obsmask] targets = np.zeros(len(np.arange(T0,T1,texp))) xaxis = np.arange(len(RA))[obsmask] # Rejecting objects that are close to the moon for time in np.arange(T0,T1,texp): ra = RA[obsmask] dec = DEC[obsmask] xaxis = np.arange(len(RA))[obsmask] lst = _skysub.lst(time,sitelong) #*360./24. ha = lst - ra alt = np.array([_skysub.altit(dec[i],ha[i],sitelat)[0] for i in range(len(ha))]) stg = alt.argmax() mm = obsmask[obsmask] mm[stg] = False obsmask[obsmask] = mm targets[tbin] = xaxis[stg] tbin+=1 #print i return targets
def airmass(ra,dec,time,sitelat,sitelong): lst = _skysub.lst(time,sitelong) #*360./24. ha = lst - ra alt = _skysub.altit(dec,ha,sitelat)[0] return alt
def computesky(self):
# computes many quantities so they're self-consistent
sidtemp = _skysub.lst(self.jd, self.longit)
self.sidereal = ra(sidtemp) # it behaves like an RA
self.decimalyr = self.julian_epoch()
self.CoordsOfDate = self.precess(self.julian_epoch())
self.hanow = ha(self.sidereal.val - self.CoordsOfDate.ra.val)
[self.altit,self.az,self.parang] = \
_skysub.altit(self.CoordsOfDate.dec.val,self.hanow.val, \
self.lat)
self.secz = _skysub.secant_z(self.altit)
self.airmass = _skysub.true_airmass(self.secz)
def computesky(self) : # computes many quantities so they're self-consistent sidtemp = _skysub.lst(self.jd,self.longit) self.sidereal = ra(sidtemp) # it behaves like an RA self.decimalyr = self.julian_epoch() self.CoordsOfDate = self.precess(self.julian_epoch()) self.hanow = ha(self.sidereal.val - self.CoordsOfDate.ra.val) [self.altit,self.az,self.parang] = \ _skysub.altit(self.CoordsOfDate.dec.val,self.hanow.val, \ self.lat) self.secz = _skysub.secant_z(self.altit) self.airmass = _skysub.true_airmass(self.secz)
def selectScienceTargets(self):
'''
Based on configuration parameters select a good set of targets to run scheduler on a specified Julian Day.
'''
session = Session()
# [To be done] Reject objects that are close to the moon
for tbin, time in enumerate(self.obsTimeBins):
if self.obsTimeMask[tbin] < 1.0:
# Select objects from database that where not observed and where not scheduled yet
# In the future may include targets that where observed a number of nights ago.
# This is still incomplete. We should also consider the distance from the previous pointing to the next!
# Since a target can have a higher airmass but be farther away from a neaby target that will take less time
# to point.
# one way of selecting targets that are close together and have good airmass is to select regions that are close
# to the current location. it can start as searching an area with r1 ~ 10 x the FoV and, if there are no regions
# to to x2 that and then x4 that. If still there are no targets, than search for the higher in the sky.
targets = session.query(Targets).filter(
Targets.observed == False).filter(
Targets.scheduled == False).filter(
Targets.type == self.sciFlag)
lst = _skysub.lst(time, self.sitelong) #*360./24.
alt = np.array([
_skysub.altit(target.targetDec, lst - target.targetRa,
self.sitelat)[0] for target in targets
])
stg = alt.argmax()
log.info('Selecting %s' % (targets[stg]))
# Marking target as schedule
tst = session.query(Targets).filter(
Targets.id == targets[stg].id)
for t in tst:
t.scheduled = True
session.commit()
self.addObservation(t, time)
self.obsTimeMask[tbin] = 1.0
else:
log.debug(
'Bin %3i @mjd=%.3f already filled up with observations. Skipping...'
% (tbin, time - 2400000.5))
#print i
return 0 #targets
def __init__(self,ra,dec,ii,jj,ntrays,exptime):
# Default observatory information
self.sitelat = -30.228
self.sitelong = 4.715
# Default sun Max Alt (defines star/end of night)
self.sunMaxAlt = -18.
self.fullmoon = 0.95
self.vfac = 0.65
self.rvfac = 0.5
# Store tiles coordinate information
self._ii = np.array(ii)
self._jj = np.array(jj)
self._ra = np.array(ra)
self._dec = np.array(dec)
# Store maximum altitude of tiles
self.maxAltit = []
for i in range(ntrays):
self.maxAltit.append(np.array([_skysub.altit(self._dec[i][j],0.,self.sitelat)[0] for j in range(len(ra[i]))]))
if len(exptime) != ntrays:
raise IOError('Number of trays/filters must match number of exposure times. ')
self.ntrays = ntrays # Number of trays/filters
self.exptime = np.array(exptime)
# Store which observation where performed or not
self.obs = []
for i in range(ntrays):
self.obs.append(np.zeros(len(ii[i]))==0)
# Store tiles to be repeated
# tile - tile index
# day - day to be repeated
# nrepeat - number of times to repeat
# nobs - number of times tile was observed
self.repeatInfo = { 'tile' : np.arange(len(self._ra)),
'day' : np.zeros(len(self._ra)),
'nobs' : np.zeros(len(self._ra),dtype=int)}
self._repeatTray = 0
self.rexptime = 0
self._nrepeat = 0
self._dTime = 0
def selectScienceTargets(self):
'''
Based on configuration parameters select a good set of targets to run scheduler on a specified Julian Day.
'''
session = Session()
# [To be done] Reject objects that are close to the moon
for tbin,time in enumerate(self.obsTimeBins):
if self.obsTimeMask[tbin] < 1.0:
# Select objects from database that where not observed and where not scheduled yet
# In the future may include targets that where observed a number of nights ago.
# This is still incomplete. We should also consider the distance from the previous pointing to the next!
# Since a target can have a higher airmass but be farther away from a neaby target that will take less time
# to point.
# one way of selecting targets that are close together and have good airmass is to select regions that are close
# to the current location. it can start as searching an area with r1 ~ 10 x the FoV and, if there are no regions
# to to x2 that and then x4 that. If still there are no targets, than search for the higher in the sky.
targets = session.query(Targets).filter(Targets.observed == False).filter(Targets.scheduled == False).filter(Targets.type == self.sciFlag)
lst = _skysub.lst(time,self.sitelong) #*360./24.
alt = np.array([_skysub.altit(target.targetDec,lst - target.targetRa,self.sitelat)[0] for target in targets])
stg = alt.argmax()
self.log.info('Selecting %s'%(targets[stg]))
# Marking target as schedule
tst = session.query(Targets).filter(Targets.id == targets[stg].id)
for t in tst:
t.scheduled = True
session.commit()
self.addObservation(t,time)
self.obsTimeMask[tbin] = 1.0
else:
self.log.debug('Bin %3i @mjd=%.3f already filled up with observations. Skipping...'%(tbin,time-2400000.5))
#print i
return 0 #targets
def make_obs(T0,T1,RA,DEC,mask,texp): obsmask = np.bitwise_and(np.zeros(len(RA),dtype=int)==0,mask) i = 0 for time in np.arange(T0,T1,texp): lst = _skysub.lst(time,sitelong)*360./24. #lst = _skysub.lst(time,sitelong) #*360./24. ha = lst - RA[obsmask] alt = np.array([_skysub.altit(DEC[obsmask][i],ha[i],sitelat)[0] for i in range(len(ha))]) stg = alt.argmax() #print time,lst,np.sqrt(dist1[stg]),np.sqrt(dist2[stg]),dist[stg],RA[obsmask][stg],DEC[obsmask][stg],stg mm = obsmask[obsmask] mm[stg] = False obsmask[obsmask] = mm i+=1 #print i return obsmask
def selectStandardTargets(self,nstars=3,nairmass=3):
'''
Based on configuration parameters, select 'nstars' standard stars to run scheduler on a specified Julian Day. Ideally you
will select standard stars before your science targets so not to have a full queue. Usually standard stars are observed
more than once a night at different airmasses. The user can control this parameter with nairmass and the script will try
to take care of the rest.
'''
session = Session()
# First of all, standard stars can be obsered multiple times in sucessive nights. I will mark all
# stars an unscheduled.
targets = session.query(Targets).filter(Targets.scheduled == True).filter(Targets.type == self.stdFlag)
for target in targets:
target.scheduled = False
session.commit()
# [To be done] Reject objects that are close to the moon
# Selecting standard stars is not only searching for the higher in that time but select stars than can be observed at 3
# or more (nairmass) different airmasses. It is also important to select stars with different colors (but this will be
# taken care in the future).
if nairmass*nstars > len(self.obsTimeBins):
self.log.warning('Requesting more stars/observations than it will be possible to schedule. Decreasing number of requests to fit in the night.')
nstars = len(self.obsTimeBins)/nairmass
obsStandars = np.zeros(len(self.obsTimeBins))-1 # first selection of observable standards
for tbin,time in enumerate(self.obsTimeBins):
if self.obsTimeMask[tbin] < 1.0:
# 1 - Select objects from database that where not scheduled yet (standard stars may be repited)
# that fits our observing night
targets = session.query(Targets).filter(Targets.scheduled == 0).filter(Targets.type == self.stdFlag)
lst = _skysub.lst(time,self.sitelong) #*360./24.
alt = np.array([_skysub.altit(target.targetDec,lst - target.targetRa,self.sitelat)[0] for target in targets])
stg = alt.argmax()
self.log.info('Selecting %s'%(targets[stg]))
# Marking target as schedule
tst = session.query(Targets).filter(Targets.id == targets[stg].id)
for t in tst:
t.scheduled = True
session.commit()
obsStandars[tbin] = t.id
else:
self.log.info('Bin already filled up with observations. Skipping...')
if len(obsStandars[obsStandars >= 0]) < nstars:
self.log.warning('Could not find %i suitable standard stars in catalog. Only %i where found.'%(nstars,len(obsStandars[obsStandars >= 0])))
#
# Unmarking potential targets as scheduled
#
for id in obsStandars[obsStandars >= 0]:
target = session.query(Targets).filter(Targets.id == id)
for t in target:
t.scheduled = False
session.commit()
tbin+=1
#
# Preparing a grid of altitudes for each target for each observing window
#
amGrid = np.zeros(len(obsStandars)*len(obsStandars)).reshape(len(obsStandars),len(obsStandars))
for i in np.arange(len(obsStandars))[obsStandars >= 0]:
target = session.query(Targets).filter(Targets.id == obsStandars[i])[0]
for j in range(len(obsStandars)):
lst = _skysub.lst(self.obsTimeBins[j],self.sitelong)
amGrid[i][j] = _skysub.true_airmass(_skysub.secant_z(_skysub.altit(target.targetDec,lst - target.targetRa,self.sitelat)[0]))
if amGrid[i][j] < 0:
amGrid [i][j] = 99.
#
# Build a grid mask that specifies the position in time each target should be observed. This means that, when
# selecting a single target we ocuppy more than one, non consecutive, position in the night. This grid shows where are these
# positions.
#
obsMask = np.zeros(len(obsStandars)*len(obsStandars),dtype=np.bool).reshape(len(obsStandars),len(obsStandars))
for i in np.arange(len(obsStandars))[obsStandars >= 0]:
amObs = np.linspace(amGrid[i].min(),self.stdMaxAirmass,nairmass) # requested aimasses
dam = np.mean(np.abs(amGrid[i][amGrid[i]<self.stdMaxAirmass][1:] - amGrid[i][amGrid[i]<self.stdMaxAirmass][:-1])) # how much airmass changes in average
for j,am in enumerate(amObs):
# Mark positions where target is at specified airmass
if j == 0:
obsMask[i] = np.bitwise_or(obsMask[i],amGrid[i] == am)
else:
obsMask[i] = np.bitwise_or(obsMask[i],np.bitwise_and(amGrid[i]>am-dam,amGrid[i]<am+dam))
#print amGrid[i][np.where(obsMask[i])]
#
# Now it is time to actually select the targets. It will start with the first target and then try the others
# until it find enough standard stars, as specified by the user.
#
# Para cada bin em tempo, varro o bin em massa de ar por coisas observaveis. Se acho um, vejo se posso agendar
# os outros bins. Se sim, marco o alvo para observacao, se nao, passo para o proximo. Repito ate completar a
# lista de alvos
#
obsMaskTimeGrid = np.zeros(len(obsStandars),dtype=np.bool)
nrequests = 0
reqId = np.zeros(nstars,dtype=np.int)-1
for tbin,time in enumerate(self.obsTimeBins[:-1]):
# Evaluates if time slots are all available. If yes, mark orbservation and ocuppy slots.
if ( (not obsMaskTimeGrid[obsMask[tbin]].any()) and (len(amGrid[tbin][obsMask[tbin]])>=nairmass) ):
obsMaskTimeGrid = np.bitwise_or(obsMaskTimeGrid,obsMask[tbin])
reqId[nrequests] = tbin
nrequests += 1
if nrequests >= nstars:
break
# Finally, requesting observations
for id in reqId[reqId >= 0]:
target = session.query(Targets).filter(Targets.id == obsStandars[id])[0]
secz = amGrid[id][obsMask[id]]
seczreq = np.zeros(nairmass,dtype=np.bool)
amObs = np.linspace(amGrid[id].min(),self.stdMaxAirmass,nairmass) # requested aimasses
for i,obstime in enumerate(self.obsTimeBins[obsMask[id]]):
sindex = np.abs(amObs-secz[i]).argmin()
if not seczreq[sindex]:
self.log.info('Requesting observations of %s @airmass=%4.2f @mjd=%.3f...'%(target.name,secz[i],obstime-2400000.5))
seczreq[sindex] = True
target.scheduled = True
session.commit()
self.addObservation(target,obstime)
self.obsTimeMask[obsMask[id]] = 1.0
#print self.obsTimeBins[obsMask[id]]
#print
#print i
return 0 #targets
def makeObs(self,T0,T1):
time = T0
hd = 1./24
maskRep = []
if self._nrepeat > 0:
maskRep = np.bitwise_and(self.repeatInfo['day'] > 0,self.repeatInfo['nobs'] < self._nrepeat)
else:
maskRep = self.repeatInfo['day'] > 0
info = ['Observations start @ JD = %12.2f'%T0,
'Observations end @ JD = %12.2f'%T1,
'Total number of tiles: %5i'%self.nTiles(),
'Tiles to observe: %5i'%(self.obsTiles()),
'Tiles to repeate: %5i'%(len(maskRep[maskRep])) ]
# count time spent observing each tray
obsTime = np.zeros(self.ntrays+1)
# Calculate moon for this night
queue = []
ramoon = 0.
decmoon = 0.
distmoon = 0.
rasun = 0.
decsun = 0.
ramoon,decmoon,distmoon = _skysub.lpmoon(T0,self.sitelat,_skysub.lst(T0,self.sitelong))
ill_frac=0.5*(1.-np.cos(_skysub.subtend(ramoon,decmoon,rasun,decsun)))
fullmoon = False
if ill_frac >= self.fullmoon:
fullmoon = True
info.append('Full moon (%5.1f)'%(ill_frac*100))
obsTime[-1] = (T1-T0)
else:
info.append('Moon %5.1f '%(ill_frac*100.))
cra = -99
cdec = -99
while time < T1 and not fullmoon:
obsDone = False
tray = 0
obsTile = -1
# Trying the first tray
while ( (not obsDone) and (0 <= tray < self.ntrays) ):
# Local Sidereal time at start -2hours and end +2hours
lst_start = _skysub.lst(time-2.*hd,self.sitelong)
lst_end = _skysub.lst(time+self.exptime[tray]+2.*hd,self.sitelong)
# Check if there is observation to be repeated this night.
if self._nrepeat > 0:
maskRep = np.bitwise_and(np.bitwise_and(self.repeatInfo['day'] > 0, self.repeatInfo['day'] <= time),self.repeatInfo['nobs'] < self._nrepeat)
else:
maskRep = np.bitwise_and(self.repeatInfo['day'] > 0, self.repeatInfo['day'] <= time)
ra_mask = self.raMask(self._repeatTray,lst_start,lst_end)
repeated = False
if len(maskRep[maskRep]) > 0:
ra_tmpmask = np.bitwise_and(ra_mask,maskRep)
if ra_tmpmask.any():
# make repeate observation
index = np.arange(len(self._ra[self._repeatTray]))[ra_tmpmask]
# Selecting highest in the sky at the center of the observation
lst = _skysub.lst(time+self.exptime[self._repeatTray]/2.,self.sitelong)*360./24.
ha = (lst - self._ra[self._repeatTray][ra_tmpmask])*24./360.
alt = np.array([_skysub.altit(self._dec[self._repeatTray][j],ha[i],self.sitelat)[0] for i,j in enumerate(index)])
if len(alt) == 0:
info.append('[R] No observable tiles available...')
else:
stg = alt.argmax()
if alt[stg] > self.maxAltit[self._repeatTray][index[stg]]*self.rvfac:
info.append('[R] Observation complete... ')
self.repeatInfo['nobs'][index[stg]] += 1
self.repeatInfo['day'][index[stg]] += self._dTime
obsDone = True
repeated = True
tray = self._repeatTray
else:
info.append('[R] Object too low. Alt = %7.2f, Max Alt = %7.2f... '%(alt[stg],self.maxAltit[self._repeatTray][index[stg]]))
ra_mask = self.raMask(tray,lst_start,lst_end)
# Check if makes sense to continue
if ra_mask.any() and not obsDone:
info.append('Number of observable tiles %4i'%len(ra_mask[ra_mask]))
index = np.arange(len(self._ra[tray]))[np.bitwise_and(ra_mask,self.obs[tray])]
# Selecting highest in the sky at the center of the observation
lst = _skysub.lst(time+self.exptime[tray]/2.,self.sitelong)*360./24.
#lst = _skysub.lst(time,sitelong) #*360./24.
ha = (lst - self._ra[tray][ra_mask])*24./360.
alt = np.array([_skysub.altit(self._dec[tray][j],ha[i],self.sitelat)[0] for i,j in enumerate(index)])
if len(alt) == 0:
info.append('No observable tiles available...')
# Go to next tray
tray+=1
else:
#info.append(['Suitable tile available...'])
stg = alt.argmax()
if alt[stg] > self.maxAltit[tray][index[stg]]*self.vfac:
info.append('Observation complete... ')
obsTile = index[stg]
obsDone = True
# check if needs to be repeated
if tray == self._repeatTray and self.repeatInfo['nobs'][index[stg]] < self._nrepeat and self.repeatInfo['day'][index[stg]] < time:
self.repeatInfo['day'][index[stg]] = time+self._dTime
elif tray == self._repeatTray and self.repeatInfo['day'][index[stg]] < time and self._nrepeat < 0:
self.repeatInfo['day'][index[stg]] = time+self._dTime
else:
obsDone = False
info.append('Object too low. Alt = %7.2f, Max Alt = %7.2f... '%(alt[stg],self.maxAltit[tray][index[stg]]*self.vfac))
# Go to next tray
tray+=1
elif repeated:
tray = -self._repeatTray
else:
tray = -1
info.append('No tiles available...')
tray = np.abs(tray)
# Check if observation was performed and in which tray
if obsDone:
if repeated:
obsTime[tray]+=self.rexptime
time+=self.rexptime
else:
obsTime[tray]+=self.exptime[tray]
time+=self.exptime[tray]
self.obs[tray][obsTile] = False
queue.append('TILE%05i %6.2f %+7.2f %16.6f %2i %8.3f'%(obsTile,self._ra[tray][obsTile],self._dec[tray][obsTile],time,tray,self.exptime[tray]))
else:
# Try one more time
# See if there is any field to be repeated in the sky
maskRep = self.repeatInfo['day'] > 0
lst_start = _skysub.lst(time-3.*hd,self.sitelong)
lst_end = _skysub.lst(time+self.rexptime+3.*hd,self.sitelong)
ra_mask = self.raMask(self._repeatTray,lst_start,lst_end)
repeated = False
idx = 0
if len(maskRep[maskRep]) > 0:
ra_tmpmask = np.bitwise_and(ra_mask,maskRep)
if ra_tmpmask.any():
# make repeate observation
index = np.arange(len(self._ra[self._repeatTray]))[ra_tmpmask]
# Selecting highest in the sky at the center of the observation
lst = _skysub.lst(time+self.exptime[self._repeatTray]/2.,self.sitelong)*360./24.
ha = (lst - self._ra[self._repeatTray][ra_tmpmask])*24./360.
alt = np.array([_skysub.altit(self._dec[self._repeatTray][j],ha[i],self.sitelat)[0] for i,j in enumerate(index)])
if len(alt) == 0:
info.append('[R] No observable tiles available...')
else:
stg = alt.argmax()
if alt[stg] > self.maxAltit[self._repeatTray][index[stg]]*self.rvfac:
info.append('[R] Observation complete... ')
self.repeatInfo['nobs'][index[stg]] += 1
self.repeatInfo['day'][index[stg]] += self._dTime
obsDone = True
repeated = True
tray = -self._repeatTray
idx = index[stg]
else:
obsDone = False
info.append('[R] Object too low. Alt = %7.2f, Max Alt = %7.2f [RR]... '%(alt[stg],self.maxAltit[self._repeatTray][index[stg]]*self.rvfac))
if obsDone:
obsTime[self._repeatTray] += self.rexptime
time+=self.rexptime
else:
obsTime[-1] += self.exptime.max()
time+=self.exptime.max()
queueInfo = '%16.6f %6.3f '%(T0,(T1-T0)*24.)
for tray in range(len(obsTime)):
queueInfo += '%10.7f '%(obsTime[tray]*24.)
return info,queue,queueInfo
def selectStandardTargets(self, nstars=3, nairmass=3):
'''
Based on configuration parameters, select 'nstars' standard stars to run scheduler on a specified Julian Day. Ideally you
will select standard stars before your science targets so not to have a full queue. Usually standard stars are observed
more than once a night at different airmasses. The user can control this parameter with nairmass and the script will try
to take care of the rest.
'''
session = Session()
# First of all, standard stars can be obsered multiple times in sucessive nights. I will mark all
# stars an unscheduled.
targets = session.query(Targets).filter(
Targets.scheduled == True).filter(Targets.type == self.stdFlag)
for target in targets:
target.scheduled = False
session.commit()
# [To be done] Reject objects that are close to the moon
# Selecting standard stars is not only searching for the higher in that time but select stars than can be observed at 3
# or more (nairmass) different airmasses. It is also important to select stars with different colors (but this will be
# taken care in the future).
if nairmass * nstars > len(self.obsTimeBins):
log.warning(
'Requesting more stars/observations than it will be possible to schedule. Decreasing number of requests to fit in the night.'
)
nstars = len(self.obsTimeBins) / nairmass
obsStandars = np.zeros(len(
self.obsTimeBins)) - 1 # first selection of observable standards
for tbin, time in enumerate(self.obsTimeBins):
if self.obsTimeMask[tbin] < 1.0:
# 1 - Select objects from database that where not scheduled yet (standard stars may be repited)
# that fits our observing night
targets = session.query(Targets).filter(
Targets.scheduled == 0).filter(
Targets.type == self.stdFlag)
lst = _skysub.lst(time, self.sitelong) #*360./24.
alt = np.array([
_skysub.altit(target.targetDec, lst - target.targetRa,
self.sitelat)[0] for target in targets
])
stg = alt.argmax()
log.info('Selecting %s' % (targets[stg]))
# Marking target as schedule
tst = session.query(Targets).filter(
Targets.id == targets[stg].id)
for t in tst:
t.scheduled = True
session.commit()
obsStandars[tbin] = t.id
else:
log.info(
'Bin already filled up with observations. Skipping...')
if len(obsStandars[obsStandars >= 0]) < nstars:
log.warning(
'Could not find %i suitable standard stars in catalog. Only %i where found.'
% (nstars, len(obsStandars[obsStandars >= 0])))
#
# Unmarking potential targets as scheduled
#
for id in obsStandars[obsStandars >= 0]:
target = session.query(Targets).filter(Targets.id == id)
for t in target:
t.scheduled = False
session.commit()
tbin += 1
#
# Preparing a grid of altitudes for each target for each observing window
#
amGrid = np.zeros(len(obsStandars) * len(obsStandars)).reshape(
len(obsStandars), len(obsStandars))
for i in np.arange(len(obsStandars))[obsStandars >= 0]:
target = session.query(Targets).filter(
Targets.id == obsStandars[i])[0]
for j in range(len(obsStandars)):
lst = _skysub.lst(self.obsTimeBins[j], self.sitelong)
amGrid[i][j] = _skysub.true_airmass(
_skysub.secant_z(
_skysub.altit(target.targetDec, lst - target.targetRa,
self.sitelat)[0]))
if amGrid[i][j] < 0:
amGrid[i][j] = 99.
#
# Build a grid mask that specifies the position in time each target should be observed. This means that, when
# selecting a single target we ocuppy more than one, non consecutive, position in the night. This grid shows where are these
# positions.
#
obsMask = np.zeros(len(obsStandars) * len(obsStandars),
dtype=np.bool).reshape(len(obsStandars),
len(obsStandars))
for i in np.arange(len(obsStandars))[obsStandars >= 0]:
amObs = np.linspace(amGrid[i].min(), self.stdMaxAirmass,
nairmass) # requested aimasses
dam = np.mean(
np.abs(amGrid[i][amGrid[i] < self.stdMaxAirmass][1:] -
amGrid[i][amGrid[i] < self.stdMaxAirmass][:-1])
) # how much airmass changes in average
for j, am in enumerate(amObs):
# Mark positions where target is at specified airmass
if j == 0:
obsMask[i] = np.bitwise_or(obsMask[i], amGrid[i] == am)
else:
obsMask[i] = np.bitwise_or(
obsMask[i],
np.bitwise_and(amGrid[i] > am - dam,
amGrid[i] < am + dam))
#print amGrid[i][np.where(obsMask[i])]
#
# Now it is time to actually select the targets. It will start with the first target and then try the others
# until it find enough standard stars, as specified by the user.
#
# Para cada bin em tempo, varro o bin em massa de ar por coisas observaveis. Se acho um, vejo se posso agendar
# os outros bins. Se sim, marco o alvo para observacao, se nao, passo para o proximo. Repito ate completar a
# lista de alvos
#
obsMaskTimeGrid = np.zeros(len(obsStandars), dtype=np.bool)
nrequests = 0
reqId = np.zeros(nstars, dtype=np.int) - 1
for tbin, time in enumerate(self.obsTimeBins[:-1]):
# Evaluates if time slots are all available. If yes, mark orbservation and ocuppy slots.
if ((not obsMaskTimeGrid[obsMask[tbin]].any())
and (len(amGrid[tbin][obsMask[tbin]]) >= nairmass)):
obsMaskTimeGrid = np.bitwise_or(obsMaskTimeGrid, obsMask[tbin])
reqId[nrequests] = tbin
nrequests += 1
if nrequests >= nstars:
break
# Finally, requesting observations
for id in reqId[reqId >= 0]:
target = session.query(Targets).filter(
Targets.id == obsStandars[id])[0]
secz = amGrid[id][obsMask[id]]
seczreq = np.zeros(nairmass, dtype=np.bool)
amObs = np.linspace(amGrid[id].min(), self.stdMaxAirmass,
nairmass) # requested aimasses
for i, obstime in enumerate(self.obsTimeBins[obsMask[id]]):
sindex = np.abs(amObs - secz[i]).argmin()
if not seczreq[sindex]:
log.info(
'Requesting observations of %s @airmass=%4.2f @mjd=%.3f...'
% (target.name, secz[i], obstime - 2400000.5))
seczreq[sindex] = True
target.scheduled = True
session.commit()
self.addObservation(target, obstime)
self.obsTimeMask[obsMask[id]] = 1.0
#print self.obsTimeBins[obsMask[id]]
#print
#print i
return 0 #targets
def computesunmoon(self):
[ras,decs,dists,toporas,topodecs,xs,ys,zs] = \
_skysub.accusun(self.jd, self.sidereal.val,self.lat)
self.SunCoords = celest([ras, decs, self.julian_epoch()])
self.hasun = ha(self.sidereal.val - self.SunCoords.ra.val)
[self.altsun,self.azsun,parangsun] = \
_skysub.altit(self.SunCoords.dec.val,self.hasun.val,\
self.lat)
self.ztwilight = _skysub.ztwilight(self.altsun)
[georam,geodm,geodism,toporam,topodecm,topodistm] = \
_skysub.accumoon(self.jd,self.lat,self.sidereal.val,
self.elevsea)
self.MoonCoords = celest([toporam, topodecm, self.julian_epoch()])
self.hamoon = ha(self.sidereal.val - self.MoonCoords.ra.val)
[self.altmoon,self.azmoon,parangmoon] = \
_skysub.altit(self.MoonCoords.dec.val,self.hamoon.val,\
self.lat)
self.sun_moon = _skysub.subtend(self.MoonCoords.ra.val,
self.MoonCoords.dec.val,
self.SunCoords.ra.val,
self.SunCoords.dec.val) # radians
self.moonillfrac = 0.5 * (1. - math.cos(self.sun_moon))
self.sun_moon = self.sun_moon * _skysub.DEG_IN_RADIAN
self.obj_moon = _skysub.subtend(
self.MoonCoords.ra.val, self.MoonCoords.dec.val,
self.CoordsOfDate.ra.val,
self.CoordsOfDate.dec.val) * _skysub.DEG_IN_RADIAN
self.lunsky = _skysub.lunskybright(self.sun_moon, self.obj_moon, 0.17,
self.altmoon, self.altit, topodistm)
[self.barytcor,
self.baryvcor] = _skysub.helcor(self.jd, self.CoordsOfDate.ra.val,
self.CoordsOfDate.dec.val,
self.hanow.val, self.lat,
self.elevsea)
self.baryjd = self.jd + self.barytcor / _skysub.SEC_IN_DAY
# find the jd at the nearest clock-time midnight ...
localtimestr = self.calstring(stdz=self.stdz, use_dst=self.use_dst)
x = string.split(localtimestr)
ymd = x[0] + " " + x[1] + " " + x[2]
if float(x[3]) >= 12.:
midnstring = ymd + " 23 59 59.99"
else:
midnstring = ymd + " 0 0 0 "
self.jdmid = time_to_jd(midnstring, stdz = self.stdz, \
use_dst = self.use_dst)
self.stmid = ra(_skysub.lst(self.jdmid, self.longit))
# elevation correction (in degrees) for horizon depression
horiz = math.sqrt(2. * self.elevhoriz / _skysub.EQUAT_RAD) \
* _skysub.DEG_IN_RADIAN
setelev = -1. * (0.83 + horiz)
hasunset = _skysub.ha_alt(self.SunCoords.dec.val, self.lat, setelev)
if hasunset > 900.:
self.jdsunset = 1000. # never sets
self.jdsunrise = 1000.
self.jdcent = 1000.
elif hasunset < -900.:
self.jdsunset = -1000. # never rises
self.jdsunrise = -1000.
self.jdcent = -1000.
else:
self.jdsunset = self.jdmid + _skysub.adj_time(self.SunCoords.ra.val \
+ hasunset - self.stmid.val)/24. # initial guess
# print "entering jdsunset - self.jdsunset = ",self.jdsunset,
self.jdsunset = _skysub.jd_sun_alt(setelev,self.jdsunset,self.lat, \
self.longit)
self.jdsunrise = self.jdmid + _skysub.adj_time(self.SunCoords.ra.val \
- hasunset - self.stmid.val)/24. # initial guess
self.jdsunrise = _skysub.jd_sun_alt(setelev,self.jdsunrise,self.lat, \
self.longit)
self.jdcent = (self.jdsunset + self.jdsunrise) / 2.
hatwilight = _skysub.ha_alt(self.SunCoords.dec.val, self.lat, -18.)
if hatwilight > 900.:
self.jdevetwi = 1000. # never gets dark
self.jdmorntwi = 1000.
elif hatwilight < -900.:
self.jdevetwi = -1000. # never gets light
self.jdmorntwi = -1000.
else:
self.jdevetwi = self.jdmid + _skysub.adj_time(self.SunCoords.ra.val \
+ hatwilight - self.stmid.val)/24. # initial guess
self.jdevetwi = _skysub.jd_sun_alt(-18.,self.jdevetwi,self.lat, \
self.longit)
self.jdmorntwi = self.jdmid + _skysub.adj_time(self.SunCoords.ra.val \
- hatwilight - self.stmid.val)/24. # initial guess
self.jdmorntwi = _skysub.jd_sun_alt(-18.,self.jdmorntwi,self.lat, \
self.longit)
[ramoonmid,decmoonmid,distmoonmid] = \
_skysub.lpmoon(self.jdmid,self.lat,self.sidereal.val)
[minmoonalt, maxmoonalt] = _skysub.min_max_alt(self.lat, decmoonmid)
# rough (close enough) check to see if moonrise or moonset occur ...
if maxmoonalt < setelev:
self.jdmoonrise = -100. # never rises
# -1000. is used later to signal non-convergence
self.jdmoonset = -100.
if minmoonalt > setelev:
self.jdmoonrise = 100. # never sets
self.jdmoonset = 100.
else:
hamoonset = _skysub.ha_alt(decmoonmid, self.lat, setelev)
tmoonrise = _skysub.adj_time(ramoonmid - hamoonset -
self.stmid.val)
tmoonset = _skysub.adj_time(ramoonmid + hamoonset - self.stmid.val)
self.jdmoonrise = self.jdmid + tmoonrise / 24.
self.jdmoonrise = _skysub.jd_moon_alt(setelev,self.jdmoonrise, \
self.lat,self.longit,self.elevsea)
self.jdmoonset = self.jdmid + tmoonset / 24.
self.jdmoonset = _skysub.jd_moon_alt(setelev,self.jdmoonset,self.lat, \
self.longit,self.elevsea)
[self.par_dra,self.par_ddec,self.aber_dra,self.aber_ddec] = \
_skysub.parellipse(self.jd,self.ra.val,self.dec.val,self.equinox,
self.lat,self.longit)
def main(argv):
'''
Main function. Reads input parameters, run scheduler and stores results.
'''
from optparse import OptionParser
parser = OptionParser()
parser.add_option("-s",'--south_pt',
help='''
Input file. This file contains the ra dec for all the tiles. The format is the
same as the output of tiler.'''
,type="string")
parser.add_option("-n",'--north_pt',
help='''
Input file. This file contains the ra dec for all the tiles. The format is the
same as the output of tiler.'''
,type="string")
parser.add_option("-m",'--meteorology',
help='''
Input file. This file contains weather information. Only clouded nights need be
specified. Format is MJD FLAG, where FLAG is
0 - Good night. Less than 0.5 mag extinction (may be skipped)
1 - Thin Cirrus. Between 0.5 and 2 mag extinction.
2 - Cloudy. Between 2 and 4 mag extinction.
3 - Closed.'''
,type="string")
parser.add_option("-v", '--verbose',action="store_true", dest="verbose", default=False,
help="Don't print status messages to stdout")
opt,arg = parser.parse_args(argv)
#
# Reading input files
#
_path = os.path.expanduser('~/Develop/SMAPs/coordinatesystemandtiling/')
sna_file = os.path.join(_path,'smaps_pointT80norte.dat')
ssa_file = os.path.join(_path,'smaps_pointsulT80.dat')
iis,jjs,ras,decs,rots = np.loadtxt(sna_file,unpack=True,usecols=(0,1,4,5,6))
iin,jjn,ran,decn,rotn = np.loadtxt(ssa_file,unpack=True,usecols=(0,1,4,5,6))
ii = np.array(np.append(iis,iin+iis.max()+10),dtype=int)
jj = np.array(np.append(jjs,jjn),dtype=int)
ra = np.append(ras,ran)
dec = np.append(decs,decn)
# Store maximum altitude of tiles
maxAltit = np.array([_skysub.altit(dec[j],0.,sitelat)[0] for j in range(len(ra))])
iciclo = 0
ncycle = 2
xcycle = 0
ntryes = 400
tryes = 0
obs = np.array([np.zeros(len(ii))==0,np.zeros(len(ii))==0,np.zeros(len(ii))==0,np.zeros(len(ii))==0])
MJD_dstart = aux.mjd(2014,01,01) # 01/jan/2014
exptime = [0.003,0.024]
xx = ii.max()+1
yy = jj.max()+1
map = np.zeros(xx*yy).reshape(yy,xx)
for i in range(len(ii)):
map[jj[i]][ii[i]] = 1.0
xmap = np.array([map,map,map])
cmap = colors.ListedColormap(['black', 'gray', 'red','white','white'])
bounds=[0,1,2,3,4]
norm = colors.BoundaryNorm(bounds, cmap.N)
#plt.plot(ii,jj,'.')
fig = plt.figure()
ax = fig.add_subplot(1,1,1) #[fig.add_subplot(2,2,0),fig.add_subplot(2,2,1),fig.add_subplot(2,2,2),fig.add_subplot(2,2,3)]
ax = fig.add_axes([0,0,1,1])
ax.axis("off")
#for i in range(len(obs)):
ax.imshow(map,aspect='auto',interpolation='nearest',cmap=cmap, norm=norm)
fig.savefig('xmap_%04i.png'%0)
nmap = 1
no_obsTray = np.zeros(len(obs)) == 1
fp = open('surveysim_02.dat','w')
for MJD in np.arange(MJD_dstart,MJD_dstart+365.*2):
nightStart = _skysub.jd_sun_alt(sunMaxAlt,2400000.5+MJD+1.0, sitelat, sitelong)
nightEnd = _skysub.jd_sun_alt(sunMaxAlt,2400000.5+MJD+1.5, sitelat, sitelong)
ramoon = 0.
decmoon = 0.
distmoon = 0.
rasun = 0.
decsun = 0.
ramoon,decmoon,distmoon = _skysub.lpmoon(nightStart,sitelat,_skysub.lst(nightStart,sitelong))
ill_frac=0.5*(1.-np.cos(_skysub.subtend(ramoon,decmoon,rasun,decsun)))
stdscr.addstr(7, 0, 'Moon illum: %.3f '%(ill_frac))
stdscr.clrtoeol()
if ill_frac < 0.95:
iciclo = 0
else:
iciclo = -1
stdscr.addstr(0,0,'Observations start at JD = %12.2f'%nightStart)
stdscr.addstr(1,0,'Observations end at JD = %12.2f'%nightEnd)
xnobs=0
if iciclo >= 0:
nobs = len(obs[iciclo][obs[iciclo]])
try:
obs[iciclo],xnobs,tnobs,emptyObsSlots = make_obs(nightStart,nightEnd,ra,dec,obs[iciclo],exptime[iciclo],maxAltit)
fp.write('%10.2f %6.3f %4i %4i '%(nightStart,nightEnd-nightStart,xnobs,tnobs))
xnobs = 0
tnobs = len(emptyObsSlots)
if len(emptyObsSlots) > 0:
obs[iciclo+1],xnobs,tnobs,emptyObsSlots = make_obs(nightStart,nightEnd,ra,dec,obs[iciclo+1],exptime[iciclo+1],maxAltit)
fp.write('%4i %4i\n'%(xnobs,tnobs))
except:
#stdscr.addstr(8,0,sys.exc_info()[0])
errinfo = traceback.format_exc(sys.exc_info()[2]).split('\n')
for ierr in range(len(errinfo)):
stdscr.addstr(11+ierr,0,errinfo[ierr])
pass
if nobs == len(obs[iciclo][obs[iciclo]]):
no_obsTray[iciclo] = True
else:
no_obsTray[iciclo] = False
if no_obsTray.all():
if tryes > ntryes:
break
else:
tryes+=1
else:
fp.write('%10.2f %6.3f %4i %4i 0 0\n'%(nightStart,nightEnd-nightStart,0.,len(np.arange(nightStart,nightEnd,exptime[iciclo]))))
stdscr.addstr(7, 20, ' - No observations this night')
stdscr.addstr(2, 0, ' Observed %i '%(xnobs))
xjj = jj[np.bitwise_not(obs[iciclo])]
xii = ii[np.bitwise_not(obs[iciclo])]
for i in range(len(xii)):
xmap[iciclo][xjj[i]][xii[i]] = 2.0
xjj = jj[np.bitwise_not(obs[iciclo+1])]
xii = ii[np.bitwise_not(obs[iciclo+1])]
for i in range(len(xii)):
xmap[iciclo+1][xjj[i]][xii[i]] = 2.0
xcycle+=1
#stdscr.addstr(0, 0, "Moving file: {0}".format(filename))
#stdscr.addstr(1, 0, "Total progress: [{1:10}] {0}%".format(progress * 10, "#" * progress))
alldone = np.zeros(ncycle) == 1
for i in range(ncycle):
if i == iciclo:
start = '--> '
else:
start = '--- '
stdscr.addstr(i+3, 0, start+'[Tray: %i] - %4i/%i areas observed'%(i,len(obs[i])-len(obs[i][obs[i]]),len(obs[i])))
alldone[i] = len(obs[i][obs[i]]) == 0
stdscr.refresh()
#print '[Ciclo: %i] - %i/%i areas observed'%(i,len(obs[i])-len(obs[i][obs[i]]),len(obs[i]))
#for i in range(len(obs)):
# ax[i].cla()
# ax[i].imshow(xmap[i],aspect='auto',interpolation='nearest',cmap=cmap, norm=norm)
ax.cla()
ax.imshow(xmap[0]+xmap[1]-1,aspect='auto',interpolation='nearest',cmap=cmap, norm=norm)
fig.canvas.draw()
if not no_obsTray.all():
fig.savefig('ymap_%04i.png'%nmap)
nmap += 1
#plt.plot(ii,jj,'.')
if alldone.all():
break
fp.close()
print 'Observations started in ',MJD_dstart
print 'Observations ended in ',MJD
print 'Survey took %i days'%(MJD-MJD_dstart)
return 0
def computesunmoon(self) : [ras,decs,dists,toporas,topodecs,xs,ys,zs] = \ _skysub.accusun(self.jd, self.sidereal.val,self.lat) self.SunCoords = celest([ras,decs,self.julian_epoch()]) self.hasun = ha(self.sidereal.val - self.SunCoords.ra.val) [self.altsun,self.azsun,parangsun] = \ _skysub.altit(self.SunCoords.dec.val,self.hasun.val,\ self.lat) self.ztwilight = _skysub.ztwilight(self.altsun) [georam,geodm,geodism,toporam,topodecm,topodistm] = \ _skysub.accumoon(self.jd,self.lat,self.sidereal.val, self.elevsea) self.MoonCoords = celest([toporam,topodecm,self.julian_epoch()]) self.hamoon = ha(self.sidereal.val - self.MoonCoords.ra.val) [self.altmoon,self.azmoon,parangmoon] = \ _skysub.altit(self.MoonCoords.dec.val,self.hamoon.val,\ self.lat) self.sun_moon = _skysub.subtend(self.MoonCoords.ra.val, self.MoonCoords.dec.val,self.SunCoords.ra.val, self.SunCoords.dec.val) # radians self.moonillfrac = 0.5 * (1. - math.cos(self.sun_moon)) self.sun_moon = self.sun_moon * _skysub.DEG_IN_RADIAN self.obj_moon = _skysub.subtend(self.MoonCoords.ra.val, self.MoonCoords.dec.val,self.CoordsOfDate.ra.val, self.CoordsOfDate.dec.val) * _skysub.DEG_IN_RADIAN self.lunsky = _skysub.lunskybright(self.sun_moon, self.obj_moon,0.17,self.altmoon,self.altit,topodistm) [self.barytcor, self.baryvcor] = _skysub.helcor(self.jd,self.CoordsOfDate.ra.val, self.CoordsOfDate.dec.val,self.hanow.val,self.lat,self.elevsea) self.baryjd = self.jd + self.barytcor / _skysub.SEC_IN_DAY # find the jd at the nearest clock-time midnight ... localtimestr = self.calstring(stdz = self.stdz, use_dst = self.use_dst) x = string.split(localtimestr) ymd = x[0] + " " + x[1] + " " + x[2] if float(x[3]) >= 12. : midnstring = ymd + " 23 59 59.99" else : midnstring = ymd + " 0 0 0 " self.jdmid = time_to_jd(midnstring, stdz = self.stdz, \ use_dst = self.use_dst) self.stmid = ra( _skysub.lst(self.jdmid,self.longit)) # elevation correction (in degrees) for horizon depression horiz = math.sqrt(2. * self.elevhoriz / _skysub.EQUAT_RAD) \ * _skysub.DEG_IN_RADIAN setelev = -1. * (0.83 + horiz) hasunset = _skysub.ha_alt(self.SunCoords.dec.val,self.lat,setelev) if hasunset > 900. : self.jdsunset = 1000. # never sets self.jdsunrise = 1000. self.jdcent = 1000. elif hasunset < -900. : self.jdsunset = -1000. # never rises self.jdsunrise = -1000. self.jdcent = -1000. else : self.jdsunset = self.jdmid + _skysub.adj_time(self.SunCoords.ra.val \ + hasunset - self.stmid.val)/24. # initial guess # print "entering jdsunset - self.jdsunset = ",self.jdsunset, self.jdsunset = _skysub.jd_sun_alt(setelev,self.jdsunset,self.lat, \ self.longit) self.jdsunrise = self.jdmid + _skysub.adj_time(self.SunCoords.ra.val \ - hasunset - self.stmid.val)/24. # initial guess self.jdsunrise = _skysub.jd_sun_alt(setelev,self.jdsunrise,self.lat, \ self.longit) self.jdcent = (self.jdsunset + self.jdsunrise) / 2. hatwilight = _skysub.ha_alt(self.SunCoords.dec.val, self.lat, -18.) if hatwilight > 900. : self.jdevetwi = 1000. # never gets dark self.jdmorntwi = 1000. elif hatwilight < -900. : self.jdevetwi = -1000. # never gets light self.jdmorntwi = -1000. else : self.jdevetwi = self.jdmid + _skysub.adj_time(self.SunCoords.ra.val \ + hatwilight - self.stmid.val)/24. # initial guess self.jdevetwi = _skysub.jd_sun_alt(-18.,self.jdevetwi,self.lat, \ self.longit) self.jdmorntwi = self.jdmid + _skysub.adj_time(self.SunCoords.ra.val \ - hatwilight - self.stmid.val)/24. # initial guess self.jdmorntwi = _skysub.jd_sun_alt(-18.,self.jdmorntwi,self.lat, \ self.longit) [ramoonmid,decmoonmid,distmoonmid] = \ _skysub.lpmoon(self.jdmid,self.lat,self.sidereal.val) [minmoonalt,maxmoonalt] = _skysub.min_max_alt(self.lat,decmoonmid) # rough (close enough) check to see if moonrise or moonset occur ... if maxmoonalt < setelev : self.jdmoonrise = -100. # never rises # -1000. is used later to signal non-convergence self.jdmoonset = -100. if minmoonalt > setelev : self.jdmoonrise = 100. # never sets self.jdmoonset = 100. else : hamoonset = _skysub.ha_alt(decmoonmid,self.lat,setelev) tmoonrise = _skysub.adj_time(ramoonmid - hamoonset - self.stmid.val) tmoonset = _skysub.adj_time(ramoonmid + hamoonset - self.stmid.val) self.jdmoonrise = self.jdmid + tmoonrise / 24. self.jdmoonrise = _skysub.jd_moon_alt(setelev,self.jdmoonrise, \ self.lat,self.longit,self.elevsea) self.jdmoonset = self.jdmid + tmoonset / 24. self.jdmoonset = _skysub.jd_moon_alt(setelev,self.jdmoonset,self.lat, \ self.longit,self.elevsea) [self.par_dra,self.par_ddec,self.aber_dra,self.aber_ddec] = \ _skysub.parellipse(self.jd,self.ra.val,self.dec.val,self.equinox, self.lat,self.longit)
def make_obs(T0,T1,RA,DEC,mask,texp,MaxAltit,obsTimes=[]):
#obsmask = np.array(mask)
i = 0
lst_start = _skysub.lst(T0,sitelong)
lst_end = _skysub.lst(T1,sitelong)
ra_mask = []
if lst_start < lst_end:
ra_mask = np.bitwise_and(RA > lst_start*360./24., RA < lst_end*360./24.)
stdscr.addstr(8,0,'[%5i] >> lst_start < lst_end <<'%(len(ra_mask[ra_mask])))
stdscr.addstr(9,0,' ')
else:
obsmask1 = RA > lst_start*360./24.
obsmask2 = np.bitwise_and(RA > 0.,RA < lst_end*360./24.)
ra_mask = np.bitwise_or(obsmask1,obsmask2)
stdscr.addstr(8,0,' ')
stdscr.addstr(9,0,'[%5i] << lst_start > lst_end >>'%(len(ra_mask[ra_mask])))
stdscr.refresh()
obsmask = np.bitwise_and(mask,ra_mask)
xindex = np.arange(len(RA))
#stdscr.addstr(5,0,'%i %i'%(len(index[obsmask]),len(index[ra_mask])))
stdscr.addstr(5,0,'Initial size of array %i'%(len(xindex)))
ondex = []
index = list(np.array(xindex)[obsmask])
if len(obsTimes) == 0:
_obsTimes = np.arange(T0,T1,texp)
else:
_obsTimes = obsTimes
obsSlot = np.zeros_like(_obsTimes) == 1
if len(index)>len(xindex[ra_mask]):
stdscr.addstr(6,0,'[WARNING] More tiles available than it is possible!')
stdscr.refresh()
return mask,0,len(np.arange(T0,T1,texp)),_obsTimes
if len(index) < 1:
stdscr.addstr(6,0,'Nothing to observe... ')
stdscr.refresh()
return mask,0,len(np.arange(T0,T1,texp)),_obsTimes
__strlen = len('Running size of array %4i'%(len(index)))
stdscr.addstr(6,0,'Running size of array %4i'%(len(index)))
stdscr.refresh()
#obsmask[ra_mask] = True
#return obsmask,i
#fp = open('queue_%05.0f.txt'%(T0-2400000.5),'w')
for line in range(10):
stdscr.addstr(10+line,0,' ')
line = 0
for itr,time in enumerate(_obsTimes):
lst = _skysub.lst(time,sitelong)*360./24.
#lst = _skysub.lst(time,sitelong) #*360./24.
ha = (lst - RA)*24./360.
alt = np.array([_skysub.altit(DEC[j],ha[j],sitelat)[0] for j in index])
if len(alt) == 0:
stdscr.addstr(6,0,'Nothing to observe... ')
stdscr.refresh()
else:
stg = alt.argmax()
i+=1
#stdscr.addstr(8,0,'%i %i %i'%(obsmask[index[stg]],index[stg],stg))
if alt[stg] > MaxAltit[index[stg]]*0.6:
ondex.append(index[stg])
index.pop(stg)
obsSlot[itr] = True
else:
stdscr.addstr(10+line,0,'Object too low. Alt = %7.2f, Max Alt = %7.2f... '%(alt[stg],MaxAltit[index[stg]]))
if line < 9:
line+=1
stdscr.refresh()
#stg = ha.argmin()
#fp.write('tile%05i %f %f\n'%( index[stg],
# RA[index[stg]],
# DEC[index[stg]]))
#
#xtime.sleep(1.0)
#fp.close()
obsmask = np.array(mask)
for idx in ondex:
if obsmask[idx] == False:
stdscr.addstr(10,0,'[WARINING] - Tile repeated!')
stdscr.refresh()
obsmask[idx] = False
#stdscr.addstr(8,0,'%i'%(len(xindex[mask])-len(xindex[obsmask])))
stdscr.refresh()
#print i
return obsmask,len(ondex),len(_obsTimes),_obsTimes[obsSlot]
def selectStandardTargets(self,flag,nstars=3,nairmass=3):
'''
Based on configuration parameters, select 'nstars' standard stars to run scheduler on a specified Julian Day. Ideally you
will select standard stars before your science targets so not to have a full queue. Usually standard stars are observed
more than once a night at different airmasses. The user can control this parameter with nairmass and the script will try
to take care of the rest.
'''
session = Session()
# query project information
projQuery = session.query(Projects).filter(Projects.flag == flag)
totobstime = 0.
# Calculate total observation time
for block in projQuery:
totobstime += block.exptime
totobstime /= 86400.0
# First of all, standard stars can be observed multiple times in sucessive nights. I will mark all
# stars as unscheduled.
targets = session.query(Targets).filter(Targets.scheduled == True).filter(Targets.type == flag)
for target in targets:
target.scheduled = False
session.commit()
# [To be done] Reject objects that are close to the moon
# [To be done] Apply all sorts of rejections
# Selecting standard stars is not only searching for the higher in that time but select stars than can be observed at 3
# or more (nairmass) different airmasses. It is also important to select stars with different colors (but this will be
# taken care in the future).
if nairmass*nstars > len(self.obsTimeBins):
self.log.warning('Requesting more stars/observations than it will be possible to schedule. Decreasing number of requests to fit in the night.')
nstars = len(self.obsTimeBins)/nairmass
# Build a grid of desired times for higher airmass observation of each standard star.
stdObsTimeBin = np.arange(10,len(self.obsTimeBins)-10,(len(self.obsTimeBins)-10)/nstars)
obsStandars = np.zeros(nstars)
print stdObsTimeBin
# selecting the closest bin without observation
stdObsTimeBin,status = self.findSuitableTimeBin(stdObsTimeBin)
if status != 0:
raise Exception('Could not find suitable time to start observations! Try cleaning queue.')
print stdObsTimeBin
site = Site()
calclst = lambda time: np.sum(np.array([float(tt) / 60.**i for i,tt in enumerate(str(site._getEphem(datetimeFromJD(time)).sidereal_time()).split(':'))]))
nightlst = np.array([calclst(obstime) for obstime in self.obsTimeBins])
for i,tbin in enumerate(stdObsTimeBin):
# selecting the closest bin without observation
closestcleanbin = tbin
while self.obsTimeMask[closestcleanbin] > 0.0:
closestcleanbin += 1
if i+1 < len(stdObsTimeBin):
if closestcleanbin > stdObsTimeBin[i+1]:
raise Exception('Could not find suitable place to start observations of standard star. Try cleaning queue.')
time = self.obsTimeBins[closestcleanbin]
# 1 - Select objects from database that where not scheduled yet (standard stars may be repited)
# that fits our observing night
#targetSched = False
# Will try until a good match is obtained
#while( not targetSched ):
targets = session.query(Targets).filter(Targets.scheduled == 0).filter(Targets.type == flag)
if len(targets[:]) > 0:
#ephem = site._getEphem(datetimeFromJD(time))
lst = calclst(time) #np.sum(np.array([float(tt) / 60.**i for i,tt in enumerate(str(ephem.sidereal_time()).split(':'))]))
sitelat = np.sum(np.array([float(tt) / 60.**i for i,tt in enumerate(str(site['latitude']).split(':'))]))
alt = np.array([_skysub.altit(target.targetDec,lst - target.targetRa,sitelat)[0] for target in targets])
stg = alt.argmax()
print('Selecting %s'%(targets[stg]))
# Marking target as schedule
tst = session.query(Targets).filter(Targets.id == targets[stg].id)
# Build airmass table for object
objsecz = np.array([_skysub.true_airmass(_skysub.secant_z(_skysub.altit(targets[stg].targetDec,nlst - targets[stg].targetRa,sitelat)[0])) for nlst in nightlst])
# Build desired airmass table
#obsairmass = np.linspace(_skysub.true_airmass(_skysub.secant_z(alt[stg])),projQuery[0].maxairmass,nairmass)
obsairmass = np.logspace(np.log10(np.min(objsecz[objsecz > 0])),np.log10(projQuery[0].maxairmass),nairmass)
np.savetxt('airmass_%04i.dat'%(stg),X=zip(self.obsTimeBins,objsecz))
# Build mask with scheduled airmasses
#mask = np.zeros(len(objsecz),dtype=bool) == 1
pltobstime,pltobsairmass = np.array([]),np.array([])
# Try scheduling observations on all airmasses
for airmass in obsairmass:
# Get times where the object is close to the desired airmass and there are no observations scheduled
timeobsmask = np.bitwise_and(self.obsTimeMask < 1.0,np.abs(objsecz - airmass) < self.tolairmass)
# Check that there are times available
if not timeobsmask.any():
#raise Exception('No time available for scheduling observations of standard star %s at airmass %.3f'%(targets[stg],airmass))
self.log.warning('No time available for scheduling observations of standard star %s at airmass %.3f'%(targets[stg],airmass))
# Start trying to schedule observations
indexes = np.arange(len(self.obsTimeMask))[timeobsmask] #np.bitwise_and(self.obsTimeMask, timeobsmask)
obsSched = False
for index in indexes:
print('[%.3f] - Time bin available for observation of standard star at airmass %.3f'%(self.obsTimeBins[index], airmass))
print '- Require %i extra time bins'%(totobstime/self.tbin)
if (self.obsTimeMask[index:index+totobstime/self.tbin] < 1.0).all():
print 'Observation fit in this block.'
self.obsTimeMask[index:index+totobstime/self.tbin] = 1.0
self.log.info('Requesting observations of %s @airmass=%4.2f @mjd=%.3f...'%(target.name,airmass,self.obsTimeBins[index]-2400000.5))
pltobstime = np.append(pltobstime,self.obsTimeBins[index:index+totobstime/self.tbin])
pltobsairmass = np.append(pltobsairmass, objsecz[index:index+totobstime/self.tbin])
#for nblock,ii in enumerate(range(index,int(index+totobstime/self.tbin),1)):
self.addObservation(targets[stg],self.obsTimeBins[index],projQuery)
break
np.savetxt('obsairmass_%04i.dat'%stg,X = zip(pltobstime,pltobsairmass))
#self.obsTimeMask[index] = 1.0
#for iobsbins in range(index+1,index+int(totobstime/self.tbin)):
#print '[%i] - require extra time bin'%(iobsbins)
#if self.obsTimeMask[iobsbins] < 1.0:
# self.obsTimeMask[iobsbins] = 1.0
#else:
# raise Exception('Time bin [%i/%i] not available for observation of standard star at airmass %.3f'%(iobsbins,len(self.obsTimeMask),airmass))
#else:
#raise Exception('Time bin not available for observation of standard star at airmass %.3f'%(airmass))
for t in tst:
t.scheduled = True
session.commit()
obsStandars[i] = t.id
else:
self.log.warning('No suitable standard star for jd:%.3f in database...'%(time))
return 0
return 0
if len(obsStandars[obsStandars >= 0]) < nstars:
self.log.warning('Could not find %i suitable standard stars in catalog. Only %i where found.'%(nstars,len(obsStandars[obsStandars >= 0])))
obsStandars = np.zeros(len(self.obsTimeBins))-1 # first selection of observable standards
for tbin,time in enumerate(self.obsTimeBins):
if self.obsTimeMask[tbin] < 1.0:
# 1 - Select objects from database that where not scheduled yet (standard stars may be repited)
# that fits our observing night
targets = session.query(Targets).filter(Targets.scheduled == 0).filter(Targets.type == flag)
if len(targets[:]) > 0:
ephem = site._getEphem(datetimeFromJD(time))
lst = np.sum(np.array([float(tt) / 60.**i for i,tt in enumerate(str(ephem.sidereal_time()).split(':'))]))
sitelat = np.sum(np.array([float(tt) / 60.**i for i,tt in enumerate(str(site['latitude']).split(':'))]))
secz = np.array([_skysub.secant_z(_skysub.altit(target.targetDec,lst - target.targetRa,sitelat)[0]) for target in targets])
stg = secz.argmax()
self.log.info('Selecting %s'%(targets[stg]))
# Marking target as schedule
tst = session.query(Targets).filter(Targets.id == targets[stg].id)
for t in tst:
t.scheduled = True
session.commit()
obsStandars[tbin] = t.id
else:
print('No suitable target for jd:%.3f in database...'%(time))
break
else:
self.log.info('Bin already filled up with observations. Skipping...')
if len(obsStandars[obsStandars >= 0]) < nstars:
self.log.warning('Could not find %i suitable standard stars in catalog. Only %i where found.'%(nstars,len(obsStandars[obsStandars >= 0])))
#
# Unmarking potential targets as scheduled
#
for id in obsStandars[obsStandars >= 0]:
target = session.query(Targets).filter(Targets.id == id)
for t in target:
t.scheduled = False
session.commit()
tbin+=1
#
# Preparing a grid of altitudes for each target for each observing window
#
amGrid = np.zeros(len(obsStandars)*len(obsStandars)).reshape(len(obsStandars),len(obsStandars))
for i in np.arange(len(obsStandars))[obsStandars >= 0]:
target = session.query(Targets).filter(Targets.id == obsStandars[i])[0]
for j in range(len(obsStandars)):
lst = _skysub.lst(self.obsTimeBins[j],self.sitelong)
amGrid[i][j] = _skysub.true_airmass(_skysub.secant_z(_skysub.altit(target.targetDec,lst - target.targetRa,self.sitelat)[0]))
if amGrid[i][j] < 0:
amGrid [i][j] = 99.
#
# Build a grid mask that specifies the position in time each target should be observed. This means that, when
# selecting a single target we ocuppy more than one, non consecutive, position in the night. This grid shows where are these
# positions.
#
obsMask = np.zeros(len(obsStandars)*len(obsStandars),dtype=np.bool).reshape(len(obsStandars),len(obsStandars))
for i in np.arange(len(obsStandars))[obsStandars >= 0]:
amObs = np.linspace(amGrid[i].min(),self.stdMaxAirmass,nairmass) # requested aimasses
dam = np.mean(np.abs(amGrid[i][amGrid[i]<self.stdMaxAirmass][1:] - amGrid[i][amGrid[i]<self.stdMaxAirmass][:-1])) # how much airmass changes in average
for j,am in enumerate(amObs):
# Mark positions where target is at specified airmass
if j == 0:
obsMask[i] = np.bitwise_or(obsMask[i],amGrid[i] == am)
else:
obsMask[i] = np.bitwise_or(obsMask[i],np.bitwise_and(amGrid[i]>am-dam,amGrid[i]<am+dam))
#print amGrid[i][np.where(obsMask[i])]
#
# Now it is time to actually select the targets. It will start with the first target and then try the others
# until it find enough standard stars, as specified by the user.
#
# Para cada bin em tempo, varro o bin em massa de ar por coisas observaveis. Se acho um, vejo se posso agendar
# os outros bins. Se sim, marco o alvo para observacao, se nao, passo para o proximo. Repito ate completar a
# lista de alvos
#
obsMaskTimeGrid = np.zeros(len(obsStandars),dtype=np.bool)
nrequests = 0
reqId = np.zeros(nstars,dtype=np.int)-1
for tbin,time in enumerate(self.obsTimeBins[:-1]):
# Evaluates if time slots are all available. If yes, mark orbservation and ocuppy slots.
if ( (not obsMaskTimeGrid[obsMask[tbin]].any()) and (len(amGrid[tbin][obsMask[tbin]])>=nairmass) ):
obsMaskTimeGrid = np.bitwise_or(obsMaskTimeGrid,obsMask[tbin])
reqId[nrequests] = tbin
nrequests += 1
if nrequests >= nstars:
break
# Finally, requesting observations
for id in reqId[reqId >= 0]:
target = session.query(Targets).filter(Targets.id == obsStandars[id])[0]
secz = amGrid[id][obsMask[id]]
seczreq = np.zeros(nairmass,dtype=np.bool)
amObs = np.linspace(amGrid[id].min(),self.stdMaxAirmass,nairmass) # requested aimasses
for i,obstime in enumerate(self.obsTimeBins[obsMask[id]]):
sindex = np.abs(amObs-secz[i]).argmin()
if not seczreq[sindex]:
self.log.info('Requesting observations of %s @airmass=%4.2f @mjd=%.3f...'%(target.name,secz[i],obstime-2400000.5))
seczreq[sindex] = True
target.scheduled = True
session.commit()
self.addObservation(target,obstime)
self.obsTimeMask[obsMask[id]] = 1.0
#print self.obsTimeBins[obsMask[id]]
#print
#print i
return 0 #targets
