From 40e5a5811c6ffce9b0974e93cdd927cbcf60c157 Mon Sep 17 00:00:00 2001 From: Joe Hunkeler Date: Tue, 11 Aug 2015 16:51:37 -0400 Subject: Repatch (from linux) of OSX IRAF --- noao/imred/crutil/doc/crcombine.hlp | 35 +++++++++++++++++++++++++++++++++++ 1 file changed, 35 insertions(+) create mode 100644 noao/imred/crutil/doc/crcombine.hlp (limited to 'noao/imred/crutil/doc/crcombine.hlp') diff --git a/noao/imred/crutil/doc/crcombine.hlp b/noao/imred/crutil/doc/crcombine.hlp new file mode 100644 index 00000000..3dddaebe --- /dev/null +++ b/noao/imred/crutil/doc/crcombine.hlp @@ -0,0 +1,35 @@ +.help crcombine Apr98 noao.imred.crutil +.ih +NAME +crcombine -- combine multiple exposures to eliminate cosmic rays +.ih +USAGE +.nf +crcombine input output +.fi +.ih +PARAMETERS +See parameters for \fBimcombine\fR. +.ih +DESCRIPTION +This task is a version of \fBimcombine\fR. See the help for that task +for a description of the parameters and algorithms. + +For the purpose of removing cosmic rays the most useful options +are the "crreject" algorithm and/or combining with a median. Many other +options may work as well. The best use of this task depends on the +number of images available. If there are more than a few images the +images should be combined with an "average" and using a rejection +algorithm. +.ih +EXAMPLES +1. To combine two images using the gain and read noise parameters in +the image header: + +.nf + cl> crcombine obj012,obj013 abc gain=gain rdnoise=rdnoise +.fi +.ih +SEE ALSO +imcombine +.endhelp -- cgit