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Old 21-05-2020, 10:02 PM
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Benjamin (Ben)
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Benjamin is offline
 
Join Date: Jun 2013
Location: Moorooka, Brisbane
Posts: 922
Secondary Mirror Mod

“‘Allo again”

Just wondering if others have done this Astronomy Shed secondary mirror mod?

https://youtu.be/MUE8fxqH3Qc

I’m keen to give it a go on my Skywatcher 8” Quattro as it’s been over tightened by me in the past (have Bob’s knobs already inserted in the secondary holder) and its now hard to adjust easily without a bit of jumping around (much time spent iteratively auto-collimating and recentering). Part of me thinks a whole new spider and secondary holder might be a better solution (say a TS Monster Spider) but also keen to hear of other possible solutions. Any advice welcome! If you have tried it and have a spare but of Teflon sheet or a 35mm OD 10mm ID washer...
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