SIFTSTAR

Name

siftstar

Purpose (one Line Only)

Generate filtered lists of stars from a single image tagged by crowding

Description

Calling Sequence

siftstar,fn

Inputs

fn - filename of the image (string). Do not include path to the file
in this input. (example: '100704.032')

Optional Input Parameters

Keyword Input Parameters

REDDIR - Path to the data products associate with this image.
(default='/net/frakir/raid/buie/Reduced/') Do not include the
date name in the directory, that part is automatically generated
from the input file name.
KEYLIST - Name of a file containing a correspondence list. This list
associates a set of standard names with the actual keyword
names found in a FITS file header. If this keyword is
omitted, a default list is used, as if a file with the
following contents had been supplied:
AIRMASS K AIRMASS
DATE K DATE-OBS
DATETMPL T DD-MM-YYYY
EXPDELTA V 0.0
EXPTIME K EXPTIME
FILTER K FILTERS
FILENAME K CCDFNAME
* OBJECT K OBJECT
UT K UT
* RA K RA
* DEC K DEC
* EPOCH K EPOCH
The middle column is a flag. It may be K, for Keyword,
T, for Template, or V, for Value. If it is V, the contents
of the third field on that line should make sense for the
name in the first field. Only those fields marked with '*'
are actually used by this program.
VERBOSE - Flag, if set turns on lots of printed and graphical output

Outputs

Writes two file files to REDDIR+'Src/'
fn+'.sr1' - data for large photometric aperture sources
fn+'.sr2' - data for small photometric aperture sources

Keyword Output Parameters

Common Blocks

Side Effects

Restrictions

Procedure

Get source list from rdir+root+'/Src/'+root+fn+'.srd
need x,y,ra,dec
Get photometric aperture size from rdir+root+'/reduc.inf'
use rdreduc, this will get objrad,sky1,sky2,gain,rdnoise,ddir
Grab the image and its header from ddir+root+'/cal/'+fn
need the image array and exposure time (info.exptime)
Call photiso with big aperture, saving the sky --> list1
Call photiso with small aperture, reusing the sky --> list2
Remove list1 from list2 (intrsect)
Save results (for each list)
x,y,fwhm,mag,err,ra,dec,snr (mag goes with aperture for the list)
make sure to augment the header to save things like apertures

Modification History

2011/01/13, Written by Erin R. George, Southwest Research Institute
2011/02/10, ERG, added numtoflist call
2011/02/11, ERG, changed input to be complete filename string
2011/03/08, MWB, incorporated into the master library, minor fix on the
contents of the sr2 files.
2012/03/08, MWB, added VERBOSE flag