RE: binocs

From: paul (astro@pgog.net)
Date: Sat Jun 15 2002 - 22:36:18 EDT


of course a good bino mount solves the problem
for 10x and above.
I have Unimount and use it for both binos and 
telescope
http://www.gis.net/~astronut/
but that could be something you "grow into"


At 18:04 06/15/02 -0700, you wrote:
>Hi Linda,
>
>Steve's binocular suggestions are all good.  I can add a few
>more suggestions.  If the binoculars you'll be buying will
>be used primarily at night, then you'll want to match up
>the size of the exit pupil with the diameter of your own
>dilated pupils.  Depending on your age, your pupils could
>be 8mm, 7mm, 6mm or less (getting smaller as you age).
>
>To determine the exit pupil size for a pair of binoculars,
>divide the objective size in mm (the second number) by the
>magnification (the first number).  For example, 7 x 50
>binocs have an exit pupil of (50/7) or ~7 mm.
>
>I use 8 x 56 binoculars made by Celestron -- it's just
>about optimal for satellite viewing.  A little more power
>than the 7 x 50's, but still relatively lightweight.  Beyond
>8x, it's difficult to hold the image steady (though if you're
>willing to spend a lot of money, they do make image-stabilized
>binoculars).
>
>Best,
>Rob
>
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