def gratArray(outerrad, hubdist, angle, inc, l=95.):
"""Trace rays leaving SPO petal to the fanned grating array.
Start with outermost radius and rotate grating array about
the hub. Define outermost grating position by max ray radius
at desired axial height.
Rays have been traced to bottom of outermost grating.
"""
#Put origin at bottom of outermost grating
PT.transform(outerrad, 0, 0, 0, 0, 0)
#Go to proper incidence angle of grating
PT.transform(0, 0, 0, 0, 0, -pi / 2)
PT.transform(0, 0, 0, -pi / 2 - angle + inc, 0, 0)
#Go to hub
PT.transform(0, hubdist, 0, 0, 0, 0)
#Trace out gratings until no rays hit a grating
#Flat
#Indices
#Reflect
#Apply Grating
#Next
PT.flat()
ind = np.logical_and(PT.y < -hubdist, PT.y > -l - hubdist)
ang = l * sin(inc) / hubdist
i = 0
while np.sum(ind) > 0:
i = i + 1
PT.reflect(ind=ind)
PT.radgrat(0., 160. / hubdist, 0, 1., ind=ind)
PT.transform(0, 0, 0, ang, 0, 0)
PT.flat()
ind = np.logical_and(PT.y < -hubdist, PT.y > -l - hubdist)
sys.stdout.write('%i \r' % i)
sys.stdout.flush()
pdb.set_trace()
def traceSector(Rin,Rout,F,N,span=pi/12,d=.605,t=.775,gap=25.,\
inc=1.5*pi/180,l=95.):
"""Trace Arcus sector
"""
#Trace parameters
R = np.arange(Rin, Rout, t) #Vector of shell radii
tg = .25 * np.arctan((R + d / 2) / F) #Primary graze angles
L = d / tan(tg) #Primary length
#L = 4*F*d/R #Vector of mirror lengths
M = np.size(R) #Number of shells
#Trace rays through SPO modules
traceSPO(R, L, F, N, M, span=span, d=d, t=t)
#Determine outermost radius of grating array
PT.transform(0, 0, -(L.max() + gap + 95.), 0, 0, 0)
PT.flat()
outerrad = np.max(sqrt(PT.x**2 + PT.y**2))
hubdist = sqrt(outerrad**2 + (1e4 - (L.max() + gap + 95.))**2)
angle = np.arctan(outerrad / (1e4 - (L.max() + gap + 95.)))
#Trace grating array
gratArray(outerrad, hubdist, angle, inc, l=l)
return
def traceFromMask(N,
numholes,
cda,
fold,
retro,
primary,
foldrot=0.,
retrorot=0.):
#Vignette at proper hole
h = hartmannMask()
ind = h == N
PT.vignette(ind=ind)
#Continue trace up to retro and back to CDA
PT.transform(0, -123.41, 1156.48 - 651.57 - 134.18, 0, 0, 0)
PT.flat()
PT.transform(0, 0, 0, pi, 0, 0)
PT.transform(*retro)
PT.zernsurfrot(retrosag, retrofig, 378. / 2, -8.993 * pi / 180 + retrorot)
PT.itransform(*retro)
PT.reflect()
PT.transform(0, 0, 0, -pi, 0, 0)
PT.transform(0, 123.41, -1156.48 + 651.57 + 134.18, 0, 0, 0)
PT.flat()
h = hartmannMask()
ind = h == N
PT.vignette(ind=ind)
PT.transform(0, 0, -134.18, 0, 0, 0)
rt = conicsolve.primrad(8475., 220., 8400.)
PT.transform(0, -rt, 75., 0, 0, 0)
PT.transform(*primary)
PT.transform(0, rt, -8475., 0, 0, 0)
PT.wolterprimary(220., 8400.)
ind = logical_and(PT.z < 8525., PT.z > 8425.)
PT.vignette(ind=ind)
PT.reflect()
PT.transform(0, -rt, 8475., 0, 0, 0)
PT.itransform(*primary)
PT.transform(0, rt, -8475., 0, 0, 0)
PT.transform(0,-85.12,8400.-651.57+85.12\
,0,0,0)
PT.transform(0, 0, 0, -pi / 4, 0, 0)
PT.transform(0, 0, 0, 0, 0, pi)
PT.flat()
PT.transform(*fold)
PT.zernsurfrot(foldsag, foldfig, 406. / 2, -174.659 * pi / 180 + foldrot)
PT.itransform(*fold)
PT.reflect()
PT.transform(0, 0, 0, 0, 0, -pi)
PT.transform(0, 0, 0, 3 * pi / 4, 0, 0)
PT.transform(0,-85.12,-85.12-(conicsolve.primfocus(220.,8400.)-651.57)\
,0,0,0)
PT.transform(*cda)
PT.flat()
return
def setupSource(wave,N,radius=450.,focal=8000.,scatter=50e-6,\
gwidth=25.,glength=32.,pitch=0.,yaw=0.,roll=0.):
"""Set up converging beam with some scatter.
Idea is to place a grating at radius and focal length
with an incidence angle of 1.5 degrees
"""
#Setup rays over grating surface
PT.x = np.random.uniform(low=-gwidth / 2, high=gwidth / 2, size=N)
PT.y = np.random.uniform(low=-glength / 2, high=glength / 2, size=N)
PT.z = np.repeat(0., N)
PT.l = np.zeros(N)
PT.m = np.zeros(N)
PT.n = np.zeros(N)
PT.ux = np.zeros(N)
PT.uy = np.zeros(N)
PT.uz = np.repeat(1., N)
#Transform to nominal focus to set ray cosines
PT.transform(0, 0, 0, -88.5 * np.pi / 180, 0, 0)
PT.transform(0, radius, -focal, 0, 0, 0)
rad = np.sqrt(PT.x**2 + PT.y**2 + PT.z**2)
PT.l = -PT.x / rad
PT.m = -PT.y / rad
PT.n = -PT.z / rad
#Add scatter
PT.l = PT.l + scatter / 10. * np.random.normal(size=N)
PT.m = PT.m + scatter * np.random.normal(size=N)
PT.n = -np.sqrt(1. - PT.l**2 - PT.m**2)
#Go back to plane of of grating
PT.transform(0, -radius, focal, 0, 0, 0)
PT.transform(0, 0, 0, 88.5 * np.pi / 180, 0, np.pi)
#Place grating and diffract
hubdist = np.sqrt(radius**2 + focal**2) * np.cos(1.5 * np.pi / 180)
PT.flat()
PT.reflect()
PT.transform(0, 0, 0, pitch, roll, yaw)
PT.radgrat(hubdist, 160. / hubdist, 1, wave)
PT.itransform(0, 0, 0, pitch, roll, yaw)
#Go to focal plane
PT.transform(0, 0, 0, np.pi / 2, 0, 0)
PT.transform(0, 0, -hubdist, 0, 0, 0)
PT.transform(0, 0, 27.27727728 - .04904905, 0, 0, 0)
PT.flat()
#plt.plot(PT.x,PT.y,'.')
return PT.centroid()
def arc(inc, yaw, hubdist, wave, order, dpermm):
"""Return x and y positions of diffraction arc
as a function of wavelength for a given order"""
#Set up source ray
PT.circularbeam(0., 1)
#Transform to grating frame
PT.transform(0, 0, 0, pi / 2 + inc, 0, 0)
PT.transform(0, 0, 0, 0, 0, yaw)
PT.flat()
#Apply grating
PT.reflect()
PT.radgrat(hubdist, dpermm, order, wave)
#Go to focus
PT.transform(0, 0, 0, 0, 0, -yaw)
PT.transform(0, hubdist, 0, 0, 0, 0)
PT.transform(0, 0, 0, pi / 2, 0, 0)
PT.flat()
#Get ray positions
return PT.x[0], PT.y[0]
def traceBeam(gratAlign,order=1.,wave=2.48,blaze=30.):
"""Traces a beam to grating, applies misalignment,
then traces to focal plane and returns mean
x,y position
x refers to spectral direction
"""
#Compute yaw to achieve Littrow configuration
phi0 = arccos(sin(1.5*pi/180)/cos(blaze*pi/180))
yaw = -tan(sin(blaze*pi/180)/tan(phi0))
## yaw = yaw - pi/2
## pdb.set_trace()
#Set up beam
rays = PT.pointsource(0.,10) #multiple rays to avoid Python complaints
#Rotate to nominal grating reference frame
PT.transform(rays,0,0,0,pi/2+1.5*pi/180,0,0)
#Apply misalignment
PT.transform(rays,*gratAlign)
#Trace grating
PT.flat(rays)
PT.transform(rays,0,0,0,0,0,yaw) #-1.73211678*pi/180
PT.radgrat(rays,11500.,160./11500.,order,wave)
PT.itransform(rays,0,0,0,0,0,yaw)
#Reverse misalignment
PT.itransform(rays,*gratAlign)
#Trace to focal plane
PT.transform(rays,0,11500.,0,0,0,0)
PT.transform(rays,0,0,0,pi/2,0,0)
PT.flat(rays)
#Return mean positions
return mean(rays[1]),mean(rays[2])
def primMaskTrace(fold, primary, woltVignette=True, foldrot=0.):
#Get Wolter parameters
alpha, p, d, e = conicsolve.woltparam(220., 8400.)
primfoc = conicsolve.primfocus(220., 8400.)
#Trace to fold mirror
#translate to center of fold mirror
PT.transform(0., 85.12, primfoc - 651.57 + 85.12, 0, 0, 0)
#rotate so surface normal points in correct direction
PT.transform(0, 0, 0, -3 * pi / 4, 0, 0)
PT.transform(0, 0, 0, 0, 0, pi)
#trace to fold flat
PT.flat()
#Introduce fold misalignment
PT.transform(*fold)
PT.zernsurfrot(foldsag, foldfig, 406. / 2, -174.659 * pi / 180 + foldrot)
PT.itransform(*fold)
PT.reflect()
PT.transform(0, 0, 0, 0, 0, -pi)
PT.transform(0, 0, 0, pi / 4, 0, 0)
#Translate to optical axis mid-plane, then down to image of
#primary focus, place primary mirror and trace
PT.transform(0, 85.12, 651.57 - 85.12, 0, 0, 0)
PT.flat()
## pdb.set_trace()
rt = conicsolve.primrad(8475., 220., 8400.)
PT.transform(0, -rt, 75., 0, 0, 0)
PT.transform(*primary)
PT.transform(0, rt, -8475., 0, 0, 0)
## PT.wolterprimary(220.,8400.)
PT.primaryLL(220., 8400., 8525., 8425., 30. * np.pi / 180., pcoeff, pax,
paz)
if woltVignette is True:
ind = logical_and(PT.z < 8525., PT.z > 8425.)
PT.vignette(ind=ind)
PT.reflect()
PT.transform(0, -rt, 8475., 0, 0, 0)
PT.itransform(*primary)
PT.transform(0, rt, -8475., 0, 0, 0)
#Move back up to mask plane and trace flat
PT.transform(0, 0, 8400. + 134.18, 0, 0, 0)
PT.flat()
## pdb.set_trace()
#Rays should now be at Hartmann mask plane
return
def traceCyl(align):
"""Traces a cylindrical approximation to Wolter I geometry
Assumes 1 m radius of curvature in accordance with OAB samples
align is a 12 element array giving the transformations to be
applied to each mirror
Uses identical set of rays each run defined upon module import
Adds a restraint such that any vignetting over 25% results in
a huge merit function
"""
#Set up source
np.random.seed(5)
a, p, d, e = con.woltparam(1000., 10000.)
r0 = con.primrad(10025., 1000., 10000.)
r1 = con.primrad(10125., 1000., 10000.)
dphi = 100. / 1000.
PT.subannulus(r0, r1, dphi, 10**4)
PT.transform(0, 0, 0, np.pi, 0, 0)
PT.transform(0, 0, -10500., 0, 0, 0)
#Trace primary cylinder: go to tangent point at center
#of mirror and then rotate to cone angle, then move
#to new cylinder axis and tracecyl
rt = con.primrad(10075., 1000., 10000.)
PT.transform(rt, 0, 0, 0, a, 0)
PT.transform(*align[:6])
PT.transform(0, 0, 0, np.pi / 2, 0, 0)
PT.transform(-1000., 0, 0, 0, 0, 0)
PT.cyl(1000.)
#Vignette rays missing physical surface
ind = np.logical_and(abs(PT.z) < 50., abs(PT.y) < 50.)
PT.vignette(ind=ind)
#Reflect and reverse transformations
PT.reflect()
PT.transform(1000., 0, 0, 0, 0, 0)
PT.itransform(0, 0, 0, np.pi / 2, 0, 0)
PT.itransform(*align[:6])
PT.itransform(rt, 0, 0, 0, a, 0)
#Trace secondary cylinder: same principle as before
rt = con.secrad(9925., 1000., 10000.)
PT.transform(0, 0, -150., 0, 0, 0)
PT.transform(rt, 0, 0, 0, 3 * a, 0)
PT.transform(*align[6:])
PT.transform(0, 0, 0, np.pi / 2, 0, 0)
PT.transform(-1000., 0, 0, 0, 0, 0)
PT.cyl(1000.)
#Vignette rays missing physical surface
ind = np.logical_and(abs(PT.z) < 50., abs(PT.y) < 50.)
PT.vignette(ind=ind)
#Reflect and reverse transformations
PT.reflect()
PT.transform(1000., 0, 0, 0, 0, 0)
PT.itransform(0, 0, 0, np.pi / 2, 0, 0)
PT.itransform(*align[6:])
PT.itransform(rt, 0, 0, 0, 3 * a, 0)
#Go down to nominal focus
PT.transform(0, 0, -9925., 0, 0, 0)
PT.flat()
#Compute merit function
nom = PT.rmsCentroid() / 10**4 * 180. / np.pi * 60**2
nom = nom + max((9500. - np.size(PT.x)), 0.)
return nom
def traceWSShell(num,theta,r0,z0,phigh,plow,shigh,slow,\
energy,rough,chaseFocus=False,bestFocus=False):
"""Trace a WS mirror pair with 10 m focal length and
mirror axial cutoffs defined by phigh,plow
"""
#Define annulus of source rays
a,p,d,e = con.woltparam(r0,z0)
r1 = PT.wsPrimRad(plow,1.,r0,z0)#np.tan(a/2.)*(plow-10000.) + r0
r2 = PT.wsPrimRad(phigh,1.,r0,z0)#np.tan(a/2.)*(phigh-10000.) + r0
rays = PT.annulus(r1,r2,num)
PT.transform(rays,0,0,0,np.pi,0,0)
PT.transform(rays,0,0,z0,0,0,0)
#Trace to primary
PT.wsPrimary(rays,r0,z0,1.)
#Handle vignetting
ind = np.logical_and(rays[3]<phigh,rays[3]>plow)
rays = PT.vignette(rays,ind=ind)
#Vignette rays hitting backside of mirror
dot = rays[4]*rays[7]+rays[5]*rays[8]+rays[6]*rays[9]
ind = dot < 0.
rays = PT.vignette(rays,ind=ind)
#If all rays are vignetted, return
if np.size(rays[1]) < 1:
return 0.,0.,0.
#Apply pointing error
rays = [rays[0],rays[1],rays[2],rays[3],\
rays[4]+np.sin(theta),rays[5],-np.sqrt(1-np.sin(theta)**2),\
rays[7],rays[8],rays[9]]
## PT.l = PT.l + np.sin(theta)
## PT.n = -np.sqrt(1 - PT.l**2)
#Reflect
PT.reflect()
#Compute mean incidence angle for reflectivity
ang = np.abs(np.mean(np.arcsin(dot))) #radians
refl1 = CXCreflIr(ang,energy,rough)
#Total rays entering primary aperture
N1 = np.size(rays[1])
#Trace to secondary
PT.wsSecondary(r0,z0,1.)
#Vignette anything outside the physical range of the mirror
ind = np.logical_and(rays[3]>slow,rays[3]<shigh)
rays = PT.vignette(rays,ind=ind)
#Vignette anything hitting the backside
dot = rays[4]*rays[7]+rays[5]*rays[8]+rays[6]*rays[9]
ind = dot < 0.
rays = PT.vignette(rays,ind=ind)
if np.size(rays[1]) < 1:
return 0.,0.,0.
PT.reflect()
#Compute mean incidence angle for reflectivity
ang = np.abs(np.mean(np.arcsin(dot))) #radians
refl2 = CXCreflIr(ang,energy,rough)
#Trace to focal plane
rays = PT.flat(rays)
## #Find Chase focus
## delta = 0.
## if chaseFocus or bestFocus:
## cx,cy = PT.centroid()
## r = np.sqrt(cx**2+cy**2)
## delta = .0625*(1.+1)*(r**2*(phigh-plow)/10000.**2)\
## *(1/np.tan(a))**2
## PT.transform(0,0,delta,0,0,0)
## PT.flat()
##
## #Find best focus
## delta2 = 0.
## delta3 = 0.
## if bestFocus:
## try:
## tran.focusI(rays,weights=
## except:
## pdb.set_trace()
## PT.flat()
return refl1*refl2,rays
def traceChaseParam(num,
psi,
theta,
alpha,
L1,
z0,
bestFocus=False,
chaseFocus=False):
"""Trace a WS mirror pair using the parameters in Eq. 13
of Chase & VanSpeybroeck
Return the RMS radius of the focus
Can specify whether to find the best focus or not
"""
#Define annulus of source rays
r0 = np.tan(4 * alpha) * z0
alphap = 2 * alpha / (1 + 1 / psi)
r1 = PT.wsPrimRad(z0 + L1, 1., r0, z0) #np.tan(alphap/2.)*L1 + r0
PT.annulus(r0, r1, num)
PT.transform(0, 0, 0, np.pi, 0, 0)
PT.transform(0, 0, -10000., 0, 0, 0)
pdb.set_trace()
#Trace to primary
PT.wsPrimary(r0, z0, psi)
#Handle vignetting
PT.vignette()
ind = np.logical_and(PT.z < z0 + L1, PT.z > z0)
PT.vignette(ind=ind)
## pdb.set_trace()
#Apply pointing error
PT.l = PT.l + np.sin(theta)
PT.n = -np.sqrt(1 - PT.l**2)
#Anything hitting backside goes away
dot = PT.l * PT.ux + PT.m * PT.uy + PT.n * PT.uz
ind = dot < 0.
PT.vignette(ind=ind)
if np.size(PT.x) < 1:
return 0., 0., 0.
#Reflect
PT.reflect()
N1 = np.size(PT.x)
#Trace to secondary
PT.wsSecondary(r0, z0, psi)
#Vignette anything that did not converge
PT.vignette()
#Vignette anything hitting the backside
dot = PT.l * PT.ux + PT.m * PT.uy + PT.n * PT.uz
ind = dot < 0.
PT.vignette(ind=ind)
## #Vignette anything outside the physical range of the mirror
## ind = np.logical_and(PT.z>z0-L1,PT.z<z0)
## PT.vignette(ind=ind)
if np.size(PT.x) < 1:
return 0., 0., 0.
PT.reflect()
#Trace to focal plane
PT.flat()
cx, cy = PT.centroid()
r = np.sqrt(cx**2 + cy**2)
#Find best focus
delta = 0.
if chaseFocus or bestFocus:
delta = .0625 * (psi + 1) * (r**2 * L1 / z0**2) * (1 /
np.tan(alpha))**2
PT.transform(0, 0, delta, 0, 0, 0)
PT.flat()
delta2 = 0.
delta3 = 0.
if bestFocus:
try:
delta2 = PT.findimageplane(20., 100)
PT.transform(0, 0, delta2, 0, 0, 0)
delta3 = PT.findimageplane(1., 100)
PT.transform(0, 0, delta3, 0, 0, 0)
except:
pdb.set_trace()
PT.flat()
return PT.rmsCentroid() / z0, delta + delta2 + delta3, r
def traceWSShell(num,theta,r0,z0,phigh,plow,shigh,slow,\
chaseFocus=False,bestFocus=False):
"""Trace a WS mirror pair with 10 m focal length and
mirror axial cutoffs defined by phigh,plow
"""
#Define annulus of source rays
a, p, d, e = con.woltparam(r0, z0)
r1 = PT.wsPrimRad(plow, 1., r0, z0) #np.tan(a/2.)*(plow-10000.) + r0
r2 = PT.wsPrimRad(phigh, 1., r0, z0) #np.tan(a/2.)*(phigh-10000.) + r0
## r2 = np.mean([r1,r2])
PT.annulus(r1, r2, num)
PT.transform(0, 0, 0, np.pi, 0, 0)
PT.transform(0, 0, z0, 0, 0, 0)
## pdb.set_trace()
#Trace to primary
PT.wsPrimary(r0, z0, 1.)
#Handle vignetting
PT.vignette()
ind = np.logical_and(PT.z < phigh, PT.z > plow)
PT.vignette(ind=ind)
#Vignette rays hitting backside of mirror
dot = PT.l * PT.ux + PT.m * PT.uy + PT.n * PT.uz
ind = dot < 0.
PT.vignette(ind=ind)
#If all rays are vignetted, return
if np.size(PT.x) < 1:
return 0., 0., 0.
#Apply pointing error
PT.l = PT.l + np.sin(theta)
PT.n = -np.sqrt(1 - PT.l**2)
#Reflect
PT.reflect()
#Compute mean incidence angle for reflectivity
## ang = np.abs(np.mean(np.arcsin(dot))) #radians
## refl1 = CXCreflIr(ang,energy,rough)
#Total rays entering primary aperture
N1 = np.size(PT.x)
#Trace to secondary
PT.wsSecondary(r0, z0, 1.)
#Vignette anything that did not converge
PT.vignette()
#Vignette anything outside the physical range of the mirror
ind = np.logical_and(PT.z > slow, PT.z < shigh)
PT.vignette(ind=ind)
#Vignette anything hitting the backside
dot = PT.l * PT.ux + PT.m * PT.uy + PT.n * PT.uz
ind = dot < 0.
PT.vignette(ind=ind)
if np.size(PT.x) < 1:
return 0., 0., 0.
PT.reflect()
#Compute mean incidence angle for reflectivity
## ang = np.abs(np.mean(np.arcsin(dot))) #radians
## refl2 = CXCreflIr(ang,energy,rough)
#Trace to focal plane
PT.flat()
#Find Chase focus
delta = 0.
if chaseFocus or bestFocus:
cx, cy = PT.centroid()
r = np.sqrt(cx**2 + cy**2)
delta = .0625*(1.+1)*(r**2*(phigh-plow)/10000.**2)\
*(1/np.tan(a))**2
PT.transform(0, 0, delta, 0, 0, 0)
PT.flat()
#Find best focus
delta2 = 0.
delta3 = 0.
if bestFocus:
try:
delta2 = PT.findimageplane(20., 100)
PT.transform(0, 0, delta2, 0, 0, 0)
delta3 = PT.findimageplane(1., 100)
PT.transform(0, 0, delta3, 0, 0, 0)
except:
pdb.set_trace()
PT.flat()
#return refl1*refl2
return PT.hpd(), PT.rmsCentroid(), delta
def fullFromMask(N, cda, fold, retro, prim, sec, foldrot=0., retrorot=0.):
## pdb.set_trace()
#Vignette at proper hole
h = hartmannMask()
ind = h == N
PT.vignette(ind=ind)
#Continue trace up to retro and back to CDA
PT.transform(0, -123.41, 1156.48 - 651.57 - 134.18, 0, 0, 0)
PT.flat()
PT.transform(0, 0, 0, pi, 0, 0)
PT.transform(*retro)
PT.zernsurfrot(retrosag, retrofig, 378. / 2, -8.993 * pi / 180 + retrorot)
PT.itransform(*retro)
PT.reflect()
PT.transform(0, 0, 0, -pi, 0, 0)
#Back to mask
PT.transform(0, 123.41, -1156.48 + 651.57 + 134.18, 0, 0, 0)
PT.flat()
h = hartmannMask()
ind = h == N
PT.vignette(ind=ind)
#Place Wolter surfaces
PT.transform(0, 0, -134.18 - 8400., 0, 0, 0)
PT.transform(0, -conicsolve.primrad(8425., 220., 8400.), 8425., 0, 0, 0)
PT.transform(*prim)
PT.itransform(0, -conicsolve.primrad(8425., 220., 8400.), 8425., 0, 0, 0)
## PT.wolterprimary(220.,8400.)
PT.primaryLL(220., 8400., 8525., 8425., 30. * np.pi / 180., pcoeff, pax,
paz)
pdb.set_trace()
ind = logical_and(PT.z < 8525., PT.z > 8425.)
PT.vignette(ind=ind)
PT.transform(0, -conicsolve.primrad(8425., 220., 8400.), 8425., 0, 0, 0)
PT.itransform(*prim)
PT.itransform(0, -conicsolve.primrad(8425., 220., 8400.), 8425., 0, 0, 0)
PT.reflect()
#Wolter secondary
PT.transform(0, -conicsolve.secrad(8325., 220., 8400.), 8325., 0, 0, 0)
PT.transform(*sec)
PT.itransform(0, -conicsolve.secrad(8325., 220., 8400.), 8325., 0, 0, 0)
PT.woltersecondary(220., 8400.)
ind = logical_and(PT.z < 8375., PT.z > 8275.)
PT.vignette(ind=ind)
PT.reflect()
PT.transform(0, -conicsolve.secrad(8325., 220., 8400.), 8325., 0, 0, 0)
PT.itransform(*sec)
PT.itransform(0, -conicsolve.secrad(8325., 220., 8400.), 8325., 0, 0, 0)
## PT.woltersecondary(220.,8400.)
## ind = logical_and(PT.z<8375.,PT.z>8275.)
## PT.vignette(ind=ind)
## PT.reflect()
#Back to fold
PT.transform(0,-85.12,8400.-651.57+85.12\
,0,0,0)
PT.transform(0, 0, 0, -pi / 4, 0, 0)
PT.transform(0, 0, 0, 0, 0, pi)
PT.flat()
PT.transform(*fold)
PT.zernsurfrot(foldsag, foldfig, 406. / 2, -174.659 * pi / 180 + foldrot)
PT.itransform(*fold)
PT.reflect()
PT.transform(0, 0, 0, 0, 0, -pi)
#Back to CDA
PT.transform(0, 0, 0, 3 * pi / 4, 0, 0)
PT.transform(0,-85.12,-85.12-8400.+651.57\
,0,0,0)
PT.transform(*cda)
PT.flat()
return
def traceSector(Rin,Rout,F,N,span=20.,d=.605,t=.775,gap=50.,\
inc=1.5*pi/180,l=95.,bestFocus=None,order=0,\
blazeYaw=0.,wave=1.,marg=0.,findMargin=False,\
analyzeLine=True,offX=0.,offY=0.):
"""Trace Arcus sector
"""
#Trace parameters
R = np.arange(Rin, Rout, t) #Vector of shell radii
tg = .25 * np.arctan((R + d / 2) / F) #Primary graze angles
L = d / tan(tg) #Primary length
#L = 4*F*d/R #Vector of mirror lengths
M = np.size(R) #Number of shells
#Create focal length vector to implement spherical principle surface
#This should be changed based on nominal focal lengths of
#modules from cosine.
focConst = F**2 #+Rin**2
focVec = sqrt(focConst - R**2)
#Weight vector for shell radii
weights = np.zeros(M * N)
spanv = np.zeros(M)
for i in range(M):
#Full angular span of each shell
spanv[i] = 2 * np.arcsin(span / 2 / R[i])
#Geometric area in each shell - 10^4 is unit conversion
weights[i * N:(i + 1) *
N] = ((R[i] + d)**2 - R[i]**2) * spanv[i] / 2 / 10000.
#Assign random wavelength to each ray
if wave == 'uniform':
wave = np.random.uniform(3.6, 3.6 * 2, size=M * N)
#Trace rays through SPO modules
rays,refl = traceSPO(R,L,focVec,N,M,spanv,wave,d=d,t=t,\
offX=offX,offY=offY)
#Can call traceSPO repeatedly for each individual module
#Then send rays through grating array
#Refl needs to be array if wave is array
weights = weights * refl
#Determine outermost radius of grating array
PT.transform(rays, 0, 0, focVec[-1] - (L.max() + gap + 95.), 0, 0, 0)
PT.flat(rays)
#outerrad should be fixed
outerrad = np.max(sqrt(rays[1]**2 + rays[2]**2))
hubdist = sqrt(outerrad**2 + (focVec[-1] - (L.max() + gap + 95.))**2)
angle = np.arctan(outerrad / (focVec[-1] - (L.max() + gap + 95.)))
thetag = angle - 1.5 * pi / 180.
## print 'Outerrad: %f\nHubdist: %f\nLmax: %f\nOuter Focus: %f\n' % \
## (outerrad,hubdist,L.max(),focVec[-1])
pdb.set_trace()
#Trace grating array - need to add in grating efficiency and
#CCD quantum efficiency
if bestFocus is None:
return gratArray(rays,outerrad,hubdist,angle,inc,l=l,\
weights=weights,order=-3,blazeYaw=blazeYaw,\
wave=2.4)
## return traceSector(Rin,Rout,F,N,span=span,d=d,t=t,gap=gap,\
## inc=inc,l=l,bestFocus=bestFocus,order=order,\
## blazeYaw=blazeYaw,wave=wave,marg=marg)
gratArray(rays,outerrad,hubdist,angle,inc,l=l,bestFocus=bestFocus,\
weights=weights,order=order,blazeYaw=blazeYaw,wave=wave)
#Account for grating efficiency
geff = gratEff(order)
#Add in grating efficiency and CCD QE
#geff and ccdQE need to be arrays if wave is array
g = geff(wave)
g = g.reshape(np.size(g))
weights = weights * g * ccdQE(wave)
#Go to focal plane
tran.transform(rays, 0, 0, bestFocus, 0, 0, 0)
surf.flat(rays)
if analyzeLine is False:
return rays, weights, wave
#Get rid of rays that made it through
## ind = rays[1] > 0
## rays = PT.vignette(rays,ind=ind)
## weights = weights[ind]
#Get rid of outliers
ind = np.abs(rays[2] - np.average(rays[2])) < 10.
rays = PT.vignette(rays, ind=ind)
weights = weights[ind]
#If no rays made it through
if np.size(rays[1]) == 0:
return 0, 0, 0, 0
#Look at resolution of this line
try:
cy = np.average(rays[2], weights=weights)
except:
pdb.set_trace()
if findMargin is True:
#Compute FWHM after Gaussian convolution
fwhms = np.linspace(1, 3, 201) / 60.**2 * pi / 180 * 12e3
tot = np.array([convolveLSF(rays,.001,m,weights=weights)\
for m in fwhms/2.35])
#Convert to arcsec, return std of margin convolution
marg = fwhms[np.argmin(
np.abs(tot / 12e3 * 180 / pi * 60**2 - 3.))] / 2.35
return marg, rays
fwhm = convolveLSF(rays, .001, marg, weights=weights)
resolution = cy / fwhm
area = np.sum(
weights
) * .799 * .83 * .8 * .9 #Grat plates, azimuthal ribs, usable area
#print resolution
#print area
#print sqrt((cy/3000)**2 - lsf**2)/F * 180/pi*60**2
print 'Done'
return resolution, area, np.nanmean(rays[1]), np.nanmean(rays[2]),\
rays,weights