CGEM Drift Alignment Procedure
Posted on 29. Oct, 2009 by Ray Shore.
This procedure covers the steps I take to perform a drift alignment on my Celestron CGEM telescope. Although the All-Star Aligment routine works really well to get the CGEM closely aligned with the celestial pole, I have found that the alignment needs to be refined further to be suitable for astrophotography. Note that this polar alignment procedure [...]
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Celestron CGEM Review- Part 3
Posted on 06. Oct, 2009 by Ray Shore.
Part 3 of my review covers polar alignment of the CGEM. I actually used two different methods. First, I just had to try the new “All-Star” polar alignment routine that Celestron has been touting. Then, I fine-tuned it with a standard drift align. To get set up, the polar axis of the CGEM must be pointed close [...]
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Celestron CGEM Review- Part 2
Posted on 28. Sep, 2009 by Ray Shore.
This is the second in a series of reviews for my new CGEM mount from Orion Telescopes and Binoculars. This review covers the first night out with the CGEM. It was mostly a test of the goto functionality of the telescope. I recived the CGEM on Monday September 14th, 2009 but didn’t get a chance [...]
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Celestron CGEM Review- Part 1
Posted on 19. Sep, 2009 by Ray Shore.
This is the first of a series of reviews planned for my new Celestron CGEM mount. I had my eye on the CGEM ever since it was first announced by Celestron. Some of the attractive features were its payload, Permanent Periodic Error Correction (PEC), new All-star polar alignment, and its ability to track well past [...]
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Jupiter’s Changing Elevation
Posted on 28. Aug, 2009 by Ray Shore.
If you are a planetary astrophotographer in the northern hemisphere, you have probably been frustrated with your attempts to acquire nicely detailed images of Jupiter in the last couple of years. Even if you obtained perfect telescope collimation, allowed your scope to reach thermal equilibrium, achieved critical focus, imaged during the best seeing conditions, etc., chances [...]
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Photoshop Astrophotography Instructional DVD
