Digital SLR Astrophotography

This tutorial covers the methods I use for astrophotography with my Canon XSi digital SLR and Celestron CGEM. It is similar to the tutorial I wrote in December of 2007 for digital SLR astrophotography with my Canon 300D. With the exception of the Orion ED80 refractor, I am using all new equipment. I am also using different software for processing the RAW images into a detailed composite photo. Note that there are different ways of going about astrophotograpy with a digital SLR. In fact, there are probably better ways. This tutorial depicts the methods I used for capturing the example images below. I hope you find my new tutorial useful and please feel free to ask questions or add comments in the “Leave a Reply” section at the end of the tutorial.

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Horsehead and Flame Nebula

After a couple of attempts to acquire a decent image of the Horsehead and Flame Nebula, it finally happened in March of this year! My 2011 image represents a major milestone for me in astrophotography with a DSLR camera and telescope. Learning my new equipment (i.e., Celestron CGEM, XSi DSLR, and Orion Autoguider) and various software programs is really making a difference. My goal for this article is to point out the main factors that helped contribute to my success.

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Astrophotography Tutorial: Creating Seamless Mosaics in Photoshop by Martin Cohen


This article gives a general outline of the techniques I use in Photoshop CS3 (CS2 and CS4 will work as well) to put together seamless mosaics of the moon and other celestial objects. Since I work with a PC myself, shortcuts for Photoshop will be given for a PC. For those who use a Mac the commands are very similar, but in general the Apple key replaces the Ctrl key.

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