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# DOARCS -- Determine dispersion relation for spectrum based on reference arcs.
# This procedure is complicated by:
# 1. The need to reextract arcs if the objects spectra are being
# recentered or retraced.
# 2. The use of shift spectra to track shifts in the dispersion from
# the reference arc spectrum.
# 3. The use of multiple exposures to correct for illumination problems
# in taking the arcs.
procedure doarcs (spec, response, arcref1, arcref2, extn, arcreplace, apidtable,
arcaps, arcbeams, savearcs, reextract, arcap, logfile, batch, done)
file spec
file response
file arcref1
file arcref2
string extn
file arcreplace
file apidtable
string arcaps
string arcbeams
bool savearcs
bool reextract
bool arcap
file logfile
bool batch
file done
struct *fd
begin
string imtype
int i, j, k, n
file temp, arc1, arc2, str1, str2, arctype, apref, arc, arcms
bool verbose1
imtype = "." // envget ("imtype")
i = stridx (",", imtype)
if (i > 0)
imtype = substr (imtype, 1, i-1)
n = strlen (imtype)
temp = mktemp ("tmp$iraf")
if (batch)
verbose1 = no
else
verbose1 = verbose
for (j=1; j<=2; j+=1) {
# The reference spectra refer initially to the 2D image. At the
# end we will reset them to refer to the 1D spectra.
hselect (spec, "refspec"//j, yes, > temp)
fd = temp
k = fscan (fd, arc1, str1)
fd = ""; delete (temp, verify=no)
if (k < 1)
break
# Strip possible image extension.
i = strlen (arc1)
if (i > n && substr (arc1, i-n+1, i) == imtype)
arc1 = substr (arc1, 1, i-n)
# Set extraction output and aperture reference depending on whether
# the arcs are to be rextracted using recentered or retraced object
# apertures.
if (arcap &&
(apscript.ansrecenter=="yes" || apscript.anstrace=="yes" ||
apscript.ansrecenter=="YES" || apscript.anstrace=="YES")) {
arc2 = spec // arc1 // ".ms"
apref = spec
if (access (arc2//imtype))
imdelete (arc2//imtype, verify=no)
delete (database//"/id"//arc2//"*", verify = no)
} else {
arc2 = arc1 // extn
apref = apscript.references
if (reextract && access (arc2//imtype)) {
if (arc2 != arcref1 // extn && arc2 != arcref2 // extn) {
if (access (done)) {
fd = done
while (fscan (fd, arcms) != EOF)
if (arcms == arc2)
break
fd = ""
} else
arcms = ""
if (arcms != arc2)
imdelete (arc2, verify=no)
}
}
}
# SHIFT arcs are reidentified with only a shift.
# HENEAR arcs are reidentified using the user refit option.
# Also internal arcs are checked if HENEAR.
hselect (arc1, "arctype", yes, > temp)
fd = temp
i = fscan (fd, arctype)
fd = ""; delete (temp, verify=no)
# Extract and determine dispersion function if necessary.
if (!access (arc2//imtype)) {
delete (database//"/id"//arc2//"*", verify = no)
if (!batch)
print ("Extract and reidentify arc spectrum ", arc1)
print ("Extract and reidentify arc spectrum ", arc1, >> logfile)
apscript (arc1, output=arc2, references=apref,
ansrecenter="NO", ansresize="NO", ansedit="NO",
anstrace="NO", nsubaps=params.nsubaps, background="none",
clean=no, weights="none", verbose=verbose1)
sapertures (arc2, apertures="", apidtable=apidtable,
wcsreset=no, verbose=no, beam=INDEF, dtype=INDEF, w1=INDEF,
dw=INDEF, z=INDEF, aplow=INDEF, aphigh=INDEF, title=INDEF)
if (response != "") {
if (params.nsubaps == 1)
sarith (arc2, "/", response, arc2, w1=INDEF, w2=INDEF,
apertures="", bands="", beams="", apmodulus=0,
reverse=no, ignoreaps=no, format="multispec",
renumber=no, offset=0, clobber=yes, merge=no,
errval=0, verbose=no)
else {
blkrep (response, temp, 1, params.nsubaps)
sarith (arc2, "/", temp, arc2, w1=INDEF, w2=INDEF,
apertures="", bands="", beams="", apmodulus=0,
reverse=no, ignoreaps=yes, format="multispec",
renumber=no, offset=0, clobber=yes, merge=no,
errval=0, verbose=no)
imdelete (temp, verify=no)
}
}
print (arc2, >> done)
if (arctype == "shift") {
reidentify (arcref2//extn, arc2,
interactive=no, section="middle line", shift=0.,
step=1, nsum=1, cradius=params.cradius,
threshold=params.threshold, nlost=100, newaps=no,
refit=no, trace=no, override=no, addfeatures=no,
database=database, plotfile=plotfile,
logfiles=logfile, verbose=verbose1)
} else {
if (arcreplace != "") {
fd = arcreplace
while (fscan (fd, arc, arcms, str2) != EOF) {
i = strlen (arc)
if (i > n && substr (arc, i-n+1, i) == imtype)
arc = substr (arc, 1, i-n)
if (arc != arc1)
next
arc = arcms
if (i > n && substr (arc, i-n+1, i) == imtype)
arc = substr (arc, 1, i-n)
arcms = arc // extn // imtype
if (access (arcms))
imdelete (arcms, verify=no)
if (!batch)
print ("Extract arc spectrum ", arc)
print ("Extract arc spectrum ", arc, >> logfile)
apscript (arc, references=apref,
ansrecenter="NO", ansresize="NO", ansedit="NO",
anstrace="NO", nsubaps=params.nsubaps,
background="none", clean=no,
weights="none", verbose=verbose1)
sapertures (arcms, apertures="",
apidtable=apidtable, wcsreset=no, verbose=no,
beam=INDEF, dtype=INDEF, w1=INDEF, dw=INDEF,
z=INDEF, aplow=INDEF, aphigh=INDEF, title=INDEF)
if (response != "") {
if (params.nsubaps == 1)
sarith (arcms, "/", response, arcfms,
w1=INDEF, w2=INDEF,
apertures="", bands="", beams="",
apmodulus=0, reverse=no,
ignoreaps=no, format="multispec",
renumber=no, offset=0, clobber=yes,
merge=no, errval=0, verbose=no)
else {
blkrep (response, temp, 1, params.nsubaps)
sarith (arcms, "/", temp, arcfms,
w1=INDEF, w2=INDEF,
apertures="", bands="", beams="",
apmodulus=0, reverse=no,
ignoreaps=yes, format="multispec",
renumber=no, offset=0, clobber=yes,
merge=no, errval=0, verbose=no)
imdelete (temp, verify=no)
}
}
scopy (arcms, arc2, w1=INDEF, w2=INDEF,
apertures=str2, bands="", beams="",
apmodulus=1000, offset=0, format="multispec",
clobber=yes, merge=yes, renumber=no,
verbose=yes, >> logfile)
imdelete (arcms, verify=no)
}
fd = ""
}
reidentify (arcref1//extn, arc2,
interactive=!batch, section="middle line",
shift=0., step=1, nsum=1, cradius=params.cradius,
threshold=params.threshold, nlost=100,
refit=params.refit, trace=no, override=no,
addfeatures=params.addfeatures,
coordlist=params.coordlist, match=params.match,
maxfeatures=50, minsep=2., database=database,
plotfile=plotfile, logfiles=logfile,
verbose=verbose1)
}
# If not reextracting arcs based on object apertures
# then save the extracted arc to avoid doing it again.
if (arc1//extn != arc2)
imdelete (arc2, verify=no)
}
# Set the REFSPEC parameters for multispec spectrum.
if (k == 1)
hedit (spec//".ms", "refspec"//j, arc2, add=yes,
verify=no, show=no, update=yes)
else
hedit (spec//".ms", "refspec"//j, arc2//" "//str1,
add=yes, verify=no, show=no, update=yes)
# Check for arc fibers in object spectra.
if (arctype != "shift" && (arcaps != "" || arcbeams != "")) {
scopy (spec//".ms", spec//"arc.ms", w1=INDEF, w2=INDEF,
apertures=arcaps, bands="", beams=arcbeams, apmodulus=1000,
offset=0, format="multispec", clobber=yes, merge=no,
renumber=no, verbose=no, >& "dev$null")
if (access (spec//"arc.ms"//imtype)) {
if (!batch)
print ("Reidentify arc fibers in ", spec,
" with respect to ", arc1)
print ("Reidentify arc fibers in ", spec,
" with respect to ", arc1, >> logfile)
delete (database//"/id"//spec//"arc.ms*", verify = no)
reidentify (arc2, spec//"arc.ms", interactive=no,
section="middle line", shift=0., step=1, nsum=1,
cradius=params.cradius, threshold=params.threshold,
nlost=100, refit=no, trace=no, override=no,
addfeatures=no, database=database,
plotfile=plotfile, logfiles=logfile,
verbose=verbose1)
imdelete (spec//"arc.ms", verify=no)
hedit (spec//".ms", "refshft"//j, spec//"arc.ms interp",
add=yes, verify=no, show=no, update=yes)
if (!savearcs)
scopy (spec//".ms", "", w1=INDEF, w2=INDEF,
apertures="!"//arcaps, bands="", beams=arcbeams,
apmodulus=1000, offset=0, format="multispec",
clobber=yes, merge=no, renumber=no,
verbose=yes, >> logfile)
}
}
}
end
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