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Subject: OFF TOPIC: The difference between the 12 and 13mm Naglers
From: Todd Gross
Reply To: mapug@shore.net
Date: Thu Apr 25 03:24:45 1996

The 13mm has better eye relief, but an annoying "kidney bean" effect, that
makes it hard to take in the whole field w/o getting blacked out as you shift
your head around. It may have a bit more punchy (contrasty) image, I did test
these two eyepieces side by side once.

The kidney bean effect is more serious than some people have noted, IMHO, as
it prevents you from using the whole 82 deg. field effectively. The 12mmNagler
has a 10mm eye relief..perfect w/o glasses, but a bit tough with.

-Todd
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Todd Gross, Ch. 7 Meteorologist, Boston
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