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Old 07-11-2014, 01:00 AM
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doppler (Rick)
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Join Date: Nov 2012
Location: Mackay
Posts: 1,657
I have found that with my 4 vane scopes the defraction spikes are only that long on really bright stars.
I have an old Astro Optical 8" f6 dob with three vanes that I want to try out on a tracking mount. (I have a samson mount in transit that I can hopefully resurect for the job)
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