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Old 14-03-2012, 01:25 PM
Poita (Peter)
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Poita is offline
 
Join Date: Jun 2011
Location: NSW Country
Posts: 3,586
Apparently it *used* to work, I've seen images taken through it.

Just took it outside again, definitely no proms visible no matter what I do.
Pop the standard BF5 back in and the proms are all there.

It isn't mine, I was given the scope to assess the problem with it. The etalon seems fine, though not quite as good as mine, but the BF seems to be the problem, no proms on either scope.

Can they just die over time? The eye-side surface is a deep red/purple and the lens side is nice and gold, appears unblemished.
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