Provided by: montage_5.0+dfsg-1_amd64 
NAME
mRotate - Rotate a FITS image by an arbitrary angle
SYNOPSIS
mRotate [-d level] [-s statusfile] [-r rotang] in.fits out.fits [ra dec xsize [ysize]]
DESCRIPTION
Rotates a FITS image by an arbitrary angle. This module is meant for quick-look only; it is not flux
conserving.
OPTIONS
-d level
Print out additional debugging information (level can be 1-3)
-s statusfile
Output and errors are written to statusfile instead of stdout.
-r rotang
Provide an angle (in degrees) to rotate the image.
ARGUMENTS
in.fits
Input FITS image.
out.fits
Path to output (rotated) FITS image.
ra dec xsize
Center location and width (in degrees) of output image - optional. By default, entire input image
area will be included in output image.
ysize Height (in degrees) of output image, if a new center location and width are provided. Optional -
defaults to xsize.
RESULT
[struct stat="OK"]
Output file will contain the same image as the input file, but rotated by rotang degrees. If a new
center location and width were provided, the output image will be the "subimage" covering that area.
MESSAGES
OK [struct stat="OK"]
ERROR No status file name given
ERROR Cannot open status file: statusfile
ERROR No rotation angle given
ERROR Rotation angle string is invalid: 'rotang'
ERROR No debug level given
ERROR Debug level string is invalid: 'level'
ERROR Debug level value cannot be negative
ERROR Invalid input file 'in.fits'
ERROR Invalid output file 'out.fits'
ERROR Center RA string (ra) cannot be interpreted as a real number
ERROR Center Dec string (dec) cannot be interpreted as a real number
ERROR X size string (xsize) cannot be interpreted as a real number
ERROR Y size string (ysize) cannot be interpreted as a real number
ERROR Invalid 'x' size
ERROR Invalid 'y' size
ERROR Location is off image
ERROR No pixels match output area
ERROR No pixels match input area
ERROR wcsinit() failed
ERROR Image file in.fits missing or invalid FITS
ERROR FITS library error
EXAMPLES
$ mRotate -r 90 in.fits out.fits
[struct stat="OK"]
BUGS
The drizzle algorithm has been implemented but has not been tested in this release.
If a header template contains carriage returns (i.e., created/modified on a Windows machine), the cfitsio
library will be unable to read it properly, resulting in the error: [struct stat="ERROR", status=207,
msg="illegal character in keyword"]
It is best for the background correction algorithms if the area described in the header template
completely encloses all of the input images in their entirety. If parts of input images are "chopped off"
by the header template, the background correction will be affected. We recommend you use an expanded
header for the reprojection and background modeling steps, returning to the originally desired header
size for the final coaddition. The default background matching assumes that there are no non-linear
background variations in the individual images (and therefore in the overlap differences). If there is
any uncertainty in this regard, it is safer to turn on the "level only" background matching (the "-l"
flag in mBgModel.
COPYRIGHT
2001-2015 California Institute of Technology, Pasadena, California
If your research uses Montage, please include the following acknowledgement: "This research made use of
Montage. It is funded by the National Science Foundation under Grant Number ACI-1440620, and was
previously funded by the National Aeronautics and Space Administration's Earth Science Technology Office,
Computation Technologies Project, under Cooperative Agreement Number NCC5-626 between NASA and the
California Institute of Technology."
The Montage distribution includes an adaptation of the MOPEX algorithm developed at the Spitzer Science
Center.