imrot is a utility for rotating and/or reflecting FITS or IRAF images.
Images can be rotated only in multiples of 90 degrees. The image may be
output with a different data type than that in which it is input, and IRAF
files may be written out as FITS files. If the -o flag is not used,
the output file name is made from the input file name by adding the angle
by which it is rotated in degrees, followed by an m if the image
is reflected. If there is no rotation or reflection, or if the -o
flag is used, the input file is overwritten.
Command Line Arguments
filename
Name of FITS or IRAF image file. This must be present.
-bpixel bits
Set output pixel size in bits using FITS options
(16: 2-byte integer, 32: 4-byte integer, -16: 2-byte unsigned integer,
-32: 4-byte floating point, -64: 8-byte floating point
-c
Write output image to current working directory
-f
Write FITS image from IRAF input image
-l
Reflect image left-right before rotating it
-o
Overwrite input file instead of writing a new file.
-rangle in degrees
Rotate image counterclockwise this many degrees. 0, 90, 180, and
270 are the options.
-v
print more information about process
Examples
1. Rotate an IRAF image 90 degrees after reflecting it and write a FITS
image.
imrot -l -f -r 90 test.imh
produces file test90m.fit.
2. Convert a 32-bit/pixel IRAF image to a 16-bit/pixel FITS image.
