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Old 27-08-2016, 06:57 AM
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SimmoW (SIMON)
Farting Nebulae

SimmoW is offline
Join Date: Jan 2014
Location: Tamleugh, Victoria, Australia
Posts: 1,339
Mark at JTW Astro might be able to help, he's very knowledgeable and knows of other issues like preserving focus for terrestrial lenses.
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