def test3(band, lname='ohlines'):
'''
Draw the extracted strip images with wavelength
'''
onum, odesc, owv1, owv2 = ip.read_orderinfo(band)
cwv, cflx = ip.read_lines(lname+'.dat')
wticks = np.arange(1.5, 2.5, 0.005)
for desc in odesc:
strdesc = 'IGRINS_%s_%s_%s' % (band, lname, desc)
strip, shdr = ip.readfits(ONESTEP_PATH+'IGRINS_%s_%s.fits' % (desc,lname))
wave = np.loadtxt(ONESTEP_PATH+'IGRINS_%s_%s.wave' % (desc,lname))
draw_strips(strip, wave, desc=strdesc, linedata=[cwv, cflx])
def test3(band, lname='ohlines'):
'''
Draw the extracted strip images with wavelength
'''
onum, odesc, owv1, owv2 = ip.read_orderinfo(band)
cwv, cflx = ip.read_lines(lname + '.dat')
wticks = np.arange(1.5, 2.5, 0.005)
for desc in odesc:
strdesc = 'IGRINS_%s_%s_%s' % (band, lname, desc)
strip, shdr = ip.readfits(ONESTEP_PATH + 'IGRINS_%s_%s.fits' %
(desc, lname))
wave = np.loadtxt(ONESTEP_PATH + 'IGRINS_%s_%s.wave' % (desc, lname))
draw_strips(strip, wave, desc=strdesc, linedata=[cwv, cflx])
def extract_strips(filename, band, apnum=[], pdeg=PDEGREE, \
PA=0, offset=[1023.5,1023.5], pscale=0.018, \
slit_len=[-1,1], slit_step=0.025, wave_step=0.00001, \
fitting_path=FITTING_PATH, \
target_path=ONESTEP_PATH):
'''
Extract the strips directly based on ZEMAX analysis fitting data
(using mapping parameters like position angle, pixel scale, ...
- input : for each band
1. FITTING DATA (fitting_path)
2. MAPPING DATA (PA,offset,pscale)
'''
fpath, fname = ip.split_path(filename)
if ip.exist_path(target_path) == False: target_path = fpath
# extract the file name only without extension
name = '.'.join(fname.split('.')[:-1])
img, hdr = ip.readfits(filename)
# read order information from file
onum, odesc, owv1, owv2 = ip.read_orderinfo(band)
if len(apnum) == 0:
apnum = range(len(onum))
# read image size
ny, nx = img.shape
#==============================================================================
# Extract strips based on ZEMAX fitting data
#==============================================================================
descs = []
strips = []
wavelengths = []
for k in apnum:
desc, wv1, wv2 = (odesc[k], owv1[k], owv2[k])
print "order # = %s, wrr = [%f, %f]" % (desc, wv1, wv2)
# read the echellogram fitting data
mx = np.loadtxt(FITTING_PATH+'mx_%s_%02d_%02d.dat' % (desc, pdeg[0], pdeg[1]))
my = np.loadtxt(FITTING_PATH+'my_%s_%02d_%02d.dat' % (desc, pdeg[0], pdeg[1]))
# make X dimension array (for wavelength)
twave = np.arange(wv1, wv2, wave_step, dtype=np.float64)
n_wave = len(twave)
# make Y dimension array (for slit)
tslit = np.arange(slit_len[0],slit_len[1]+slit_step, slit_step, dtype=np.float64)
n_slit = len(tslit)
# make 2D array for wavelength, slit-positions
swave = np.zeros([n_slit,n_wave], dtype=np.float64)
sslit = np.zeros([n_slit,n_wave], dtype=np.float64)
for i in range(n_wave):
sslit[:,i] = tslit
for i in range(n_slit):
swave[i,:] = twave
# find X, Y positions for each wavelength and slit-position
sx = ip.polyval2d(swave, sslit, mx, deg=pdeg)
sy = ip.polyval2d(swave, sslit, my, deg=pdeg)
# transform into pixel units
px, py = ip.xy2pix(sx, sy, PA=PA, offset=offset, pscale=pscale)
# check image range 0 < x < 2048
xmin, xmax = (0,n_wave)
for i in range(n_slit):
vv = np.where((px[i,:] >= 0) & (px[i,:] < nx))[0]
if np.min(vv) > xmin: xmin = np.min(vv)
if np.max(vv) < xmax: xmax = np.max(vv)
# extract the aperture by using interpolation from image
tstrip = ip.imextract(img, px[:,xmin:xmax], py[:,xmin:xmax])
twave = twave[xmin:xmax]
print ' + Wavelength valid range = [%f, %f]' % (twave[0], twave[-1])
descs.append(desc)
wavelengths.append(twave)
strips.append(tstrip)
#==============================================================================
# Save the strips in FITS format
#==============================================================================
for d, w, s in zip(descs, wavelengths, strips):
shdr = header.copy()
shdr.update('GEN-TIME', time.strftime('%Y-%m-%d %H:%M:%S'))
shdr.update('LNAME', lname)
shdr.update('ECH-ORD', d)
# WCS header ========================================
shdr.update('WAT0_001', 'system=world')
shdr.update('WAT1_001', 'wtype=linear label=Wavelength units=microns units_display=microns')
shdr.update('WAT2_001', 'wtype=linear')
shdr.update('WCSDIM', 2)
shdr.update('DISPAXIS', 1)
shdr.update('DC-FLAG', 0)
# wavelength axis header =============================
shdr.update('CTYPE1', 'LINEAR ')
shdr.update('LTV1', 1)
shdr.update('LTM1_1', 1.0)
shdr.update('CRPIX1', 1.0)
#header.update('CDELT1', w[1]-w[0])
shdr.update('CRVAL1', w[0])
shdr.update('CD1_1', w[1]-w[0])
# slit-position axis header ==========================
shdr.update('CTYPE2', 'LINEAR ')
shdr.update('LTV2', 1)
shdr.update('LTM2_2', 1.0)
shdr.update('CRPIX2', 1.0)
#header.update('CDELT1', w[1]-w[0])
shdr.update('CRVAL2', -1.0)
shdr.update('CD2_2', slit_step)
# save FITS with header
ip.savefits(EXTRACT_PATH+'IGRINS_%s_%s.fits' % (lname,d), s, header=shdr)
np.savetxt(EXTRACT_PATH+'IGRINS_%s_%s.wave' % (lname,d), w)
def extract_strips(filename, band, apnum=[], pdeg=PDEGREE, \
PA=0, offset=[1023.5,1023.5], pscale=0.018, \
slit_len=[-1,1], slit_step=0.025, wave_step=0.00001, \
fitting_path=FITTING_PATH, \
target_path=ONESTEP_PATH):
'''
Extract the strips directly based on ZEMAX analysis fitting data
(using mapping parameters like position angle, pixel scale, ...
- input : for each band
1. FITTING DATA (fitting_path)
2. MAPPING DATA (PA,offset,pscale)
'''
fpath, fname = ip.split_path(filename)
if ip.exist_path(target_path) == False: target_path = fpath
# extract the file name only without extension
name = '.'.join(fname.split('.')[:-1])
img, hdr = ip.readfits(filename)
# read order information from file
onum, odesc, owv1, owv2 = ip.read_orderinfo(band)
if len(apnum) == 0:
apnum = range(len(onum))
# read image size
ny, nx = img.shape
#==============================================================================
# Extract strips based on ZEMAX fitting data
#==============================================================================
descs = []
strips = []
wavelengths = []
for k in apnum:
desc, wv1, wv2 = (odesc[k], owv1[k], owv2[k])
print "order # = %s, wrr = [%f, %f]" % (desc, wv1, wv2)
# read the echellogram fitting data
mx = np.loadtxt(FITTING_PATH + 'mx_%s_%02d_%02d.dat' %
(desc, pdeg[0], pdeg[1]))
my = np.loadtxt(FITTING_PATH + 'my_%s_%02d_%02d.dat' %
(desc, pdeg[0], pdeg[1]))
# make X dimension array (for wavelength)
twave = np.arange(wv1, wv2, wave_step, dtype=np.float64)
n_wave = len(twave)
# make Y dimension array (for slit)
tslit = np.arange(slit_len[0],
slit_len[1] + slit_step,
slit_step,
dtype=np.float64)
n_slit = len(tslit)
# make 2D array for wavelength, slit-positions
swave = np.zeros([n_slit, n_wave], dtype=np.float64)
sslit = np.zeros([n_slit, n_wave], dtype=np.float64)
for i in range(n_wave):
sslit[:, i] = tslit
for i in range(n_slit):
swave[i, :] = twave
# find X, Y positions for each wavelength and slit-position
sx = ip.polyval2d(swave, sslit, mx, deg=pdeg)
sy = ip.polyval2d(swave, sslit, my, deg=pdeg)
# transform into pixel units
px, py = ip.xy2pix(sx, sy, PA=PA, offset=offset, pscale=pscale)
# check image range 0 < x < 2048
xmin, xmax = (0, n_wave)
for i in range(n_slit):
vv = np.where((px[i, :] >= 0) & (px[i, :] < nx))[0]
if np.min(vv) > xmin: xmin = np.min(vv)
if np.max(vv) < xmax: xmax = np.max(vv)
# extract the aperture by using interpolation from image
tstrip = ip.imextract(img, px[:, xmin:xmax], py[:, xmin:xmax])
twave = twave[xmin:xmax]
print ' + Wavelength valid range = [%f, %f]' % (twave[0], twave[-1])
descs.append(desc)
wavelengths.append(twave)
strips.append(tstrip)
#==============================================================================
# Save the strips in FITS format
#==============================================================================
for d, w, s in zip(descs, wavelengths, strips):
shdr = header.copy()
shdr.update('GEN-TIME', time.strftime('%Y-%m-%d %H:%M:%S'))
shdr.update('LNAME', lname)
shdr.update('ECH-ORD', d)
# WCS header ========================================
shdr.update('WAT0_001', 'system=world')
shdr.update(
'WAT1_001',
'wtype=linear label=Wavelength units=microns units_display=microns'
)
shdr.update('WAT2_001', 'wtype=linear')
shdr.update('WCSDIM', 2)
shdr.update('DISPAXIS', 1)
shdr.update('DC-FLAG', 0)
# wavelength axis header =============================
shdr.update('CTYPE1', 'LINEAR ')
shdr.update('LTV1', 1)
shdr.update('LTM1_1', 1.0)
shdr.update('CRPIX1', 1.0)
#header.update('CDELT1', w[1]-w[0])
shdr.update('CRVAL1', w[0])
shdr.update('CD1_1', w[1] - w[0])
# slit-position axis header ==========================
shdr.update('CTYPE2', 'LINEAR ')
shdr.update('LTV2', 1)
shdr.update('LTM2_2', 1.0)
shdr.update('CRPIX2', 1.0)
#header.update('CDELT1', w[1]-w[0])
shdr.update('CRVAL2', -1.0)
shdr.update('CD2_2', slit_step)
# save FITS with header
ip.savefits(EXTRACT_PATH + 'IGRINS_%s_%s.fits' % (lname, d),
s,
header=shdr)
np.savetxt(EXTRACT_PATH + 'IGRINS_%s_%s.wave' % (lname, d), w)
