Документ взят из кэша поисковой машины. Адрес оригинального документа : http://www.mso.anu.edu.au/~jerjen/researchprojects/cepheids/procedure Дата изменения: Wed Apr 14 10:12:27 2010 Дата индексирования: Tue Oct 2 11:02:17 2012 Кодировка: Поисковые слова: п п п п п п п п п п п п п п п п п п п п п п п п п

#
# Differential Photometry for the Cepheid star
#
# Before you start:
#
# copy all fits images of the times series into a working directory
# make a file with the names of all fits images, e.g. "ls -1 ceph* > imlist"
# make a file with the julian dates, e.g. "cp imlist juliandate" and then remove the unnecessary bits
# make a file called 'starcoor' with the xy position of the star you want to do photometry. Cepheid is at xy= 101 101
# make a file called 'refstarcoor' with the xy position of a suitable reference star for differential phot, eg xy=103,172.5
#
# Then run this series of commands in iraf with "cl < procedure"
#

# Cleaning up before starting

delete ceph*.mag.*
delete temp
delete mergemag
delete finalphot

qphot '@imlist' 4 5 5 3.5 coord=starcoor inter-

tmerge ceph*.mag.1 mergemag 'append' allcols- tbltype=text

tproject mergemag temp "1,29,30" #extract name of image, mag and mag error from target star

delete temp2
delete mergemag

qphot '@imlist' 4 5 5 3.5 coord=refstarcoor inter-

tmerge ceph*.mag.2 mergemag 'append' allcols- tbltype=text

tproject mergemag temp2 "1,29,30" #extract name of image, mag and mag error from reference star

delete result
delete results
delete results2
tmerge 'temp,temp2' result 'merge' allcols+ tbltype=text
tdump result cdfile="" pfile="" datafile="results"
tmerge 'juliandate,results' finalphot 'merge' allcols+ tbltype=text

tcalc "finalphot" "magdiff" "c3-c6"

tstat finalphot 8

axispar.wl=90.3
axispar.wr=95.0
axispar.wb=tstat.median-3*tstat.stddev #0.95*tstat.vmin
axispar.wt=tstat.median+3*tstat.stddev #1.05*tstat.vmax
axispar.xlabel='Julian Date'
axispar.ylabel='Delta mag'
sgraph "finalphot c1 magdiff" errcol=4 pointmo+

delete ceph*.mag.*
delete temp
delete temp2
delete mergemag
delete result
delete results