Документ взят из кэша поисковой машины. Адрес оригинального документа : http://www.apo.nmsu.edu/35m_operations/35m_manual/Instruments/CorMass/Files/cormass2.pro Дата изменения: Thu Jul 8 07:52:36 2004 Дата индексирования: Sun Apr 10 09:19:46 2016 Кодировка: Поисковые слова: туманность андромеды

pro cormass2,list
;
;procedure to pre-process CorMASS 'differenced' images to correct for reset
;voltage decay effects seen in NICMOS3 images. This effect is not subtraced
;out through differencing. This is our so-called 'magic subtraction 2'
;technique.
;
;inputs: list: filename of file that contains listing of
; full filenames (i.e. /chaser/iraf/...)
; that contain differenced FITS format files
; to be corrected.
;
;calls: magicsub2
;
;written by: John C. Wilson
; Cornell Univ.
;
;date: Mar 00
;
;MODIFICATIONS: Designate oldim to be float -- just in case fits files
; produced through R2-R1 differencing step are still integer.
; Without making the data floating point
; pixel arithmetic can cause integer overflows
; with the '00 version of NASA's readfits.pro. -- Sep '00
;
;
on_error,1

nl=numlines(list) ;find number of files
print,'nl: ',nl
files=strarr(nl)

openr,lun,list,/get_lun
readf,lun,files
free_lun,lun

for i=0,nl-1 do begin

oldim=float(readfits(files[i],hdr))
d=size(oldim,/N_DIMENSIONS)
if d GT 0 then begin

magicsub2,oldim,procim
sxaddhist,'Reset Decay Corrected w/ MagSub2',hdr,/PDU
name=str_sep(files[i],'.',/REMOVE_ALL)
newname=name[0]+'m.'+name[1] ;'m' signifies 'magic subtracted'
writefits,newname,procim,hdr
print,'wrote: ',newname

endif

endfor

return
end