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Old 12-06-2005, 06:47 PM
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acropolite (Phil)
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Join Date: Feb 2005
Location: Launceston Tasmania
Posts: 9,021
John, I haven't had it out enough to know whether it's a scope problem, cooling or maybe just bad seeing. Cooling may be the issue but I've noticed that when still warm there's noticeable distortion of the image but once it settles down the image seems sharp enough, just not much definition. That's with a 14mm EP (s5000 meade) which is sharper and has more contrast than the standard 26mm EP. 14mm gives approximately 140x, maybe the answer is a little more magnification, or a longer cooldown time. Collimation is OK; I have collimated a couple of times and stars are nice pinpoints. I am however a little concerned with secondary mirror alignment. I have suspicions that the secondary isn't concentric with the corrector/primary, but I have yet to investigate that.
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