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Ships within 48 hours · Estimated delivery Aug 11 - Aug 16
Mobile terminal support ONSTEP
and 82A colour filter)
Adjustable angle lens
800mm and above – 55mm
Dark Clear Skies M68M to M63F Fine Back Focus Spacer – 1.4mm Poseidon-M Pro Mobile terminal support ONSTEPThe Dark Clear Skies M68M to M63F Fine Back Focus Spacer (1. 4 mm) is a precision machined spacer designed for fine adjustment of back focus distance in large format astrophotography imaging trains. Purpose & Use Many modern reducers, flatteners, and imaging systems that use larger thread standards such as M68 and M63 require extremely precise back focus spacing to deliver optimal star shapes across the image field. Even small spacing errors of around
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