Copyright © Michael Richmond.
This work is licensed under a Creative Commons License.
Making a color composite image from individual R, G, B images
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During the workshop, we acquired images of the Eta Carinae Nebula
from a telescope in Australia.
Here are JPEG versions
of the images taken through R (red), G (green) and B (blue) filters.
There are many tools which can combine three individual
images into a single color (RGB) composite image.
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I use the image processing program called
GIMP ,
which is a free, open-source program;
it runs under Windows, or Mac OS, or Linux.
I followed the instructions given at
this page ;
I had to make a few changes because the "Colorify"
command was in a different menu on my (old) version of Gimp.
-
Aaron Titus' tips for using ImageJ to create color composites
- Larry Marschall recommends using Photoshop:
one can then find many guides to creating RGB color composites
in Photoshop, such as this one:
The end result: a single color composite JPEG image.
Here are another set of RGB images of an astronomical object --
the Ring Nebula, M51. These images are in the astronomical
FITS format, not JPEG, so they may not open in some
software packages.
Copyright © Michael Richmond.
This work is licensed under a Creative Commons License.