# Parameters for XCSAO task of IRAF package RVSAO 2.6

# Spectra
spectra,s,a,"",,,List of input spectra
specnum,s,h,"0",,,Spectrum aperture range if multispec or 2-D file
specband,i,h,0,,,Spectrum band if multispec file
specdir,s,h,"",,,Directory for input spectra
correlate,s,h,"velocity",|velocity|wavelength|pixel|yes|no|,,Cross-correlate spectrum (velocity wavelength pixel no)

# Templates
templates,s,h,"",,,List of template spectra
tempnum,s,h,"0",,,Template aperture range if 2-D or multispec file
tempband,i,h,1,,,Template band if template is multispec file
tempdir,s,h,"",,,Directory for template spectra
echelle,b,h,no,,,Echelle spectra (template tracks spectrum) (yes or no)

# Wavelength limits for correlation
st_lambda,r,h,INDEF,,,Starting wavelength in Angstroms or pixels to correlate
end_lambda,r,h,INDEF,,,Ending wavelength in Angstroms or pixels to correlate

# Useful intermediate displays
obj_plot,b,h,no,,,Plot the raw object data
xcor_plot,b,h,no,,,Plot the filtered correlation function
xcor_file,b,h,no,,,Write the filtered correlation function to a file

# Emission and absorption line removal
fixbad,b,h,no,,,Eliminate portions of spectrum with bad lines (yes or no)
badlines,s,h,"badlines.dat",,,Lines to eliminate from spectrum
s_emchop,s,h,"no",|yes|no|tempfile|specfile|,,"Remove emission or absorption lines (yes,no,tempfile)"
t_emchop,s,h,"no",|yes|no|tempfile|,,"Remove emission or absorption lines (yes,no,tempfile)"
s_abs_reject,r,h,100,0.,,"Spectrum absorption line rejection in sigma of fit"
s_em_reject,r,h,2.,0.,,"Spectrum emission line rejection in sigma of fit"
t_abs_reject,r,h,0.,0.,,"Template absorption line rejection in sigma of fit"
t_em_reject,r,h,0.,0.,,"Template emission line rejection in sigma of fit"

# Spectrum processing
bell_window,r,h,0.05,,,Fraction of spectrum to taper
renormalize,b,h,no,,,Renormalize spectrum before transform (yes or no)
ncols,i,h,2048,256,65536,Number of cols into which to rebin
interp_mode,s,h,"spline3",nearest|linear|spline3|poly3|poly5|sums,,Rebin interpolation mode

# Fourier transform processing
zeropad,s,h,"no",|yes|no|tempfile|,,"Pad transforms with zeroes to lower noise (yes, no, tempfile)"
low_bin,i,h,5,,,Bin number of low frequency cutoff
top_low,i,h,20,,,Bin number where low frequency reaches one
top_nrun,i,h,125,,,Bin number where high frequency starts to slope off
nrun,i,h,250,,,Bin number of high frequency cutoff

# Velocity modification
vel_init,s,h,"zero",zero|guess|zguess|correlation|emission|combination,,Initial velocity source (zero guess zguess corr em comb)
czguess,r,h,0.,,,Initial velocity guess in km/sec or z
nzpass,i,h,0,,,Number of times template is shifted to match object velocity
tshift,r,h,0.,,,"night to night zero point velocity shift"
svel_corr,s,h,"barycentric",none|file|heliocentric|barycentric|hfile,,"Spectrum velocity correction (none,file,helio,bary,hfile)"
tvel_corr,s,h,"file",none|file|heliocentric|barycentric|hfile,,"Template velocity correction (none,file,helio,bary,hfile)"

# Velocity peak fitting
pkmode,i,h,1,,,Peak-fitting mode (1-parabola 2-quartic 3-cosx/1+x^2)
pkfrac,r,h,0.5,,,Fraction of peak or number of points for peak fitting (0=FWHM)
pksrch,i,h,25,,,Half-width of search region for graphically set peak
minvel,r,h,-5000.,,,Minimum allowable velocity in km/sec
maxvel,r,h,100000.,,,Maximum allowable velocity in km/sec

# Saving results
report_mode,i,h,1,,,Report mode (1=normal 2=one-line)
logfiles,s,h,"STDOUT,xcsao.log",,,List of log files
save_vel,b,h,no,,,Save result in IRAF data file header (yes or no)
rvcheck,b,h,no,,,Enable header update if not correlate=no (yes or no)
archive,b,h,no,,,Save results in binary archive record (yes or no)

# Display information
nsmooth,i,h,0,,,Smooth displayed spectrum (0=no else number of times)
cvel,r,h,INDEF,,,Center velocity of output graph
dvel,r,h,INDEF,,,Velocity half-width of output graph
ablines,s,h,"ablines.dat",,,Absorption line list
emlines,s,h,"emlines.dat",,,Emission line list
linedir,s,h,"rvsao$lib/",,,Directory for line lists

# Displaying results
dispmode,i,h,1,,,Display modes (1=spectrum+xcor 2=spectrum+lines)
displot,b,h,yes,,,Display results on <device> (yes or no)
device,s,h,"stdgraph",,,Display device
vel_plot,s,h,"correlation",correlation|emission|combination,,Velocity to plot
curmode,b,h,no,,,Wait for keyboard response after each object (yes or no)
hardcopy,b,h,no,,,Automatic hardcopy of results on <plotter> (yes or no)
plotter,s,h,"stdplot",,,Hardcopy output device

# Debugging
temp_plot,b,h,no,,,Plot the template spectra
contsub_plot,b,h,no,,,Plot the continuum-subtracted data
apodize_plot,b,h,no,,,Plot the apodized data
fft_plot,b,h,no,,,Plot the fft of the data
tfft_plot,b,h,no,,,Plot the inverse of the fft (the filtered spectra)
uxcor_plot,b,h,no,,,Plot the unfiltered cross-correlation
nsum,i,h,1,,,"Number of pixels to sum across dispersion"
debug,b,h,no,,,Display intermediate results
cursor,*gcur,h,"",,,Graphics cursor input
mode,s,h,"ql",,,