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# SFLUXCAL -- Extract standard stars and determine sensitivity function.
# If flux calibrating, extract and dispersion correct the standard star
# spectra. Compile the standard star fluxes from the calibration
# directory. The user is queried for the star name but the band passes
# are not allow to change interactively. Next compute the sensitivity
# function using SENSFUNC. This is interactive. Once the sensitivity
# function images are created, flux and extinction calibrate the standard
# stars. This is done in such a way that if new standard stars are added
# in a later execution only the new stars are added and then a new
# sensitivity function is computed. If the update flag is set all
# spectra which are specified are reprocessed if they were previously
# processed. In a redo the "std" file is deleted, otherwise additions
# are appended to this file.
procedure sfluxcal (stds, arcs, arcref, arcrefs, redo, update,
scattered, arcap, extcor, done, log1, log2)
file stds
file arcs
file arcref
string arcrefs
bool redo
bool update
bool scattered
bool arcap
bool extcor
file done
file log1
file log2
struct *fd1, *fd2, *fd3
begin
string imtype, ectype
string spec, specec, arc, str1, str2, str3, str4
file temp1, temp2
int i, j
bool reextract, log, scat
str1 = ""
str2 = ""
imtype = "." // envget ("imtype")
i = stridx (",", imtype)
if (i > 0)
imtype = substr (imtype, 1, i-1)
ectype = ".ec" // imtype
temp1 = mktemp ("tmp$iraf")
temp2 = mktemp ("tmp$iraf")
reextract = redo || (update && (sproc.newaps || sproc.newdisp))
sproc.newsens = no
if (redo && access ("std"))
delete ("std", verify=no)
fd1 = stds
while (fscan (fd1, spec) != EOF) {
specec = spec // ectype
scat = no
if (scattered) {
hselect (spec, "apscatte", yes, > temp1)
fd2 = temp1
if (fscan (fd2, str1) < 1)
scat = yes
fd2 = ""; delete (temp1, verify=no)
}
if (reextract || !access (specec) || (update && scat)) {
if (access (specec))
imdelete (specec, verify=no)
if (scat) {
print ("Subtract scattered light in ", spec) | tee (log1)
apslitproc (spec, ansextract="NO", ansscat="YES")
}
print ("Extract standard star spectrum ", spec) | tee (log1)
hselect (spec, "date-obs,ut,exptime", yes, > temp1)
hselect (spec, "ra,dec,epoch,st", yes, >> temp1)
fd2 = temp1
if (fscan (fd2, str1, str2, str3) == 3) {
setjd (spec, observatory=observatory, date="date-obs",
time="ut", exposure="exptime", jd="jd", hjd="",
ljd="ljd", utdate=yes, uttime=yes, listonly=no,
>> log1)
if (fscan (fd2, str1, str2, str3, str4) == 4)
setairmass (spec, intype="beginning",
outtype="effective", exposure="exptime",
observatory=observatory, show=no, update=yes,
override=yes, >> log1)
}
fd2 = ""; delete (temp1, verify=no)
apslitproc (spec)
}
hselect (specec, "dc-flag,std-flag", yes, > temp1)
fd2 = temp1
j = fscan (fd2, str1, str2)
fd2 = ""; delete (temp1, verify=no)
if (j < 1) {
# Fix arc headers if necessary.
if (sproc.newarcs) {
fd2 = arcs
while (fscan (fd2, arc) != EOF) {
hselect (arc, "date-obs,ut,exptime", yes, > temp1)
hselect (arc, "ra,dec,epoch,st", yes, >> temp1)
fd3 = temp1
if (fscan (fd3, str1, str2, str3) == 3) {
setjd (arc, observatory=observatory,
date="date-obs", time="ut", exposure="exptime",
jd="jd", hjd="", ljd="ljd", utdate=yes,
uttime=yes, listonly=no, >> log1)
if (fscan (fd3, str1, str2, str3, str4) == 4)
setairmass (arc, intype="beginning",
outtype="effective", exposure="exptime",
observatory=observatory, show=no,
update=yes, override=yes, >> log1)
}
fd3 = ""; delete (temp1, verify=no)
hedit (arc, "refspec1", arc, add=yes, verify=no,
show=no, update=yes)
}
fd2 = ""
sproc.newarcs = no
}
print ("Assign arc spectra for ", spec) | tee (log1)
refspectra (spec, references=arcrefs,
apertures="", refaps="", ignoreaps=no,
select=sparams.select, sort=sparams.sort,
group=sparams.group, time=sparams.time,
timewrap=sparams.timewrap, override=yes, confirm=no,
assign=yes, logfiles="STDOUT", verbose=no) |
tee (log1, > log2)
sdoarcs (spec, arcref, reextract, arcap, log1, no)
hselect (specec, "refspec1", yes, > temp1)
fd2 = temp1
i = fscan (fd2, arc)
fd2 = ""; delete (temp1, verify=no)
if (i < 1) {
print ("No arc reference assigned for ", spec) | tee (log1)
next
} else {
print ("Dispersion correct ", spec) | tee (log1)
dispcor (specec, "", linearize=sparams.linearize,
database=database, table=arcref//ectype,
w1=INDEF, w2=INDEF, dw=INDEF, nw=INDEF, log=sparams.log,
flux=sparams.flux, global=no, ignoreaps=no, confirm=no,
listonly=no, logfile=logfile)
hedit (specec, "dc-flag", 0, add=yes, show=no,
verify=no, update=yes)
}
}
if (j < 2 || !access ("std")) {
print ("Compile standard star fluxes for ", spec) | tee (log1)
standard (specec, output="std", samestar=yes, beam_switch=no,
apertures="", bandwidth=sparams.bandwidth,
bandsep=sparams.bandsep, fnuzero=3.68E-20,
extinction=extinction, caldir=caldir,
observatory=observatory, interact=sparams.s_interact)
hedit (specec, "std-flag", "yes", add=yes, verify=no,
show=no, update=yes)
print (specec, >> temp2)
sproc.newsens = yes
}
}
fd1 = ""
sections ("sens.????"//imtype, option="nolist")
if (sproc.newsens || sections.nimages == 0) {
if (!access ("std")) {
print ("No standard star data") | tee (log1)
sproc.fluxcal1 = no
} else {
imdelete ("sens.????"//imtype, verify=no)
print ("Compute sensitivity function") | tee (log1)
sensfunc ("std", "sens", apertures="", ignoreaps=no,
logfile=logfile, extinction=extinction,
newextinction="extinct.dat", observatory=observatory,
function=sparams.s_function, order=sparams.s_order,
interactive=yes, graphs="sr", marks="plus cross box")
sproc.newsens = yes
}
}
# Note that if new standard stars are added the old standard
# stars are not recalibrated unless the redo flag is used.
if (sproc.fluxcal1 && sproc.newsens) {
print ("Flux and/or extinction calibrate standard stars") |
tee (log1)
calibrate ("@"//temp2, "", extinct=extcor, flux=sproc.fluxcal1,
extinction=extinction, observatory=observatory, ignoreaps=no,
sensitivity="sens", fnu=sparams.fnu) | tee (log1, > log2)
if (sproc.splot1) {
print ("Standard stars:")
str1 = sproc.anssplot
if (str1 == "NO" || str1 == "YES")
sproc.splot1 = no
if (str1 == "no" || str1 == "NO")
sproc.splot2 = no
else
sproc.splot2 = yes
}
if (sproc.splot2)
splot ("@"//temp2)
sections (temp2, option="fullname", >> done)
delete (temp2, verify=no)
}
end
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