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Old 11-10-2018, 07:32 PM
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Outcast (Carlton)
Always gonna be a NOOB...

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Join Date: Oct 2008
Location: Cairns, Qld
Posts: 1,285
No dew forming on the corrector plate I'm pleased to say but, how do I distinguish between tube currents & upper air currents causing any seeing issues?

Quote:
Originally Posted by Wavytone View Post
Simple - if it shows a tube current or the corrector dews, cover more of the OTA.
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