HEADAS help file

NAME

uvotskycorr - attempt to aspect correct UVOT sky images

uvotskycorr skyfile=<filename>

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

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.
(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.
(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.

The following examples illustrate running uvotskycorr

1. run uvotskycorr to find corrections

      uvotskycorr what=ID infile=usk.img

November 2005