HEADAS help file

NAME

uvotskycorr - attempt to aspect correct UVOT sky images

USAGE

uvotskycorr skyfile=<filename>

DESCRIPTION

This tool iterates over UVOT image files attempting to determine or applying aspect corrections.

PARAMETERS

what [string] (ID|SKY): Whether to find corrections (what=ID) or apply corrections (what=SKY).
skyfile [filename]: Name of input image file(s). This can be a comma-delimited list of file names or @<file> where <file> contains the names of the files to process, one per line.
corrfile [filename]: Input corrections file for what=SKY.
attfile [filename]: Input attitude file.
outfile [filename]: Output file name. For what=ID, the aspect corrections will be written to this file.
(starid = NONE) [string]: Parameters to pass to star identification. This parameter value is merged with default settings to derive the aspcorr sub-task starid parameter value. The starid value format is a space delimited string made up of name=value elements which aspcorr and tristarid understand.
(catspec = usnob1.spec) [filename]: Catalog descriptor file(s). A comma-delimited list allows specifying multiple catalog descriptors which will be used left to right.
(options = NONE) [string]: Options for aspect correction processing. This is a comma-delimited list of keywords. The keyword INTERPOLATE causes otherwise uncorrected images to have corrections interpolated/extrapolated from adjacent images in the same snapshot with known corrections. The keyword FORCE causes existing ASPCORR keyword values to be ignored when applying corrections.
(detopt = NONE) [string]: Options for source detection. This parameter value is merged with default settings to derive the uvotdetect sub-task parameter values. The detopt value format is a space delimited string made up of name=value elements which uvotdetect understands.
(cleanup = yes) [boolean]: Remove intermediate files?
(history = yes) [boolean]: Write history keywords?
(clobber = no) [boolean]: Overwrite existing files?
(chatter = 1) [enumerated integer]: Standard HEAdas chatter parameter.

EXAMPLES

The following examples illustrate running uvotskycorr

1. run uvotskycorr to find corrections

      uvotskycorr what=ID infile=usk.img

2. run uvotskycorr to find corrections providing star identification options

      uvotskycorr what=ID infile=usk.img starid='mag.min=13 min.matches=4'

3. run uvotskycorr to find corrections providing source detection options

      uvotskycorr what=ID infile=usk.img detopt='coinfile=NONE sensfile=NONE'

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