Al Kelly's CCD Astrophotography Page
Description: Anyone with a telescope and a CCD camera can take images of nebula and galaxies even from the city.
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The Color Images on this page were made through the process of combining three separate images taken through red ,green, and blue ( R G B ) ; or cyan, magenta, and yellow ( C M Y ) filters. An infrared blocking filter was used in series with each of the R G B & C M Y filters. Images that are generically referred to as L R G B or W C M Y images have been combined with a monochrome image to improve the S/N ratio. Additional information on L R G B and W C M Y imaging can be read in the December 1998 issue of S
An analytical analysis of the signal to noise ratio between CMY and RGB filtered images.
A Basic manual on acquiring and processing CCD images is being developed by Al Kelly and Ed Grafton. If you are interested in learning more about this process then be sure and read this document.
Al Kelly's CCD Astrophotography Page