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Old 10-06-2020, 09:27 AM
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Merlin66 (Ken)
Spectroscopy Wizard

Merlin66 is offline
Join Date: Oct 2005
Location: St Leonards, Vic
Posts: 8,043
The 2 diagonal has a much longer path length than the 1.25, about 20mm longer.
Sounds like your OTA was designed for the smaller diagonal.....not much you can do.
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