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Old 23-08-2020, 05:17 PM
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Logieberra (Logan)
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Join Date: Mar 2010
Location: Canberra
Posts: 1,644
Adapter: M72 to M55 (RH-200 to SBIG)

The numbers are close enough.
What I can confirm is the (approx) 72mm male threads I’ve measured are for the Officina Stellare Veloce RH-200 Astrograph.
The 55mm male threads are for SBIG cameras (eg STL-11000).
$60 shipped.
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