This is the command mShrinkHdr that can be run in the OnWorks free hosting provider using one of our multiple free online workstations such as Ubuntu Online, Fedora Online, Windows online emulator or MAC OS online emulator
PROGRAM:
NAME
mShrinkHdr - Make a FITS header from a template with different pixel scale
SYNOPSIS
mShrinkHdr [-d][-s scale] template.hdr shrunken.hdr
DESCRIPTION
There are two ways to generate "thumbnail" images. One is to build a full-resolution
mosaic
and shrink it down using mShrink to the scale desired. This process can be costly if
the
full resolution image is not desired (or not desired yet). It is much faster to mosaic
at
the scale of the thumbnail itself. One reason for doing this could be to evaluate
whether
th full-resolution mosaic is worth building at all.
mShrinkHdr is a simple utility that takes a FITS header template (such as might come out
of
mMakeHdr or mHdr) and make a new one at a differenc pixel scale. The default scale for
this
new header is 200 pixels, though the user can override this with any value.
OPTIONS
-d
Turn on debugging.
-s scale
Set the size in pixels of the larger axis.
ARGUMENTS
template.hdr
Original FITS header template.
shrunken.hdr
"Thumbnail" FITS header template.
RESULT
If successful, the result is a new FITS header template with a size and
pixel scale appropriate to making a thumbnail mosaic.
MESSAGES
ERROR Cannot open output template file
ERROR Bad template: filename
ERROR Output wcsinit() failed.
EXAMPLES
$ mShrinkHdr region.hdr thumbnail.hdr
[struct stat="OK"]
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