Re: (ATMoB:Discuss) Barska Binoculars collimation procedure

To: "Matt Phelps" <mphelps*at*cfa.harvard.edu>, <mariomendes*at*attbi dot com>, <atmob-discuss*at*atmob daht org>
Subject: Re: (ATMoB:Discuss) Barska Binoculars collimation procedure
From: "Paul Valleli" <valleli*at*rcn dot com>
Date: Mon, 7 Oct 2002 21:23:07 -0400
Delivered-To: atmob-discuss-mhonarc*at*atmob daht org
Delivered-To: atmob-discuss*at*atmob daht org
References: <20021007172028.WYAU9928.rwcrmhc52.attbi dot com*at*rwcrwbc57> <010301c26e2c$68d06760$af188e83*at*harvard.edu>
Sender: owner-atmob-discuss*at*atmob daht org

Maio et al,
Subject: Re: (ATMoB:Discuss) Barska Binoculars collimation procedure
The proper method of collimation in the laboratory is described in one of
the ATM Books. It requires a collimator with light source with an aperture
that can fully cover both apertures at the same time. Both sections should
be boresighted to an accuracy of 1 arc-minute if you have excellent
eyesight, otherwise 2 arc-min. is sufficient.
You can also do it looking at a very distant object or a bright star. The
problem is that you need to have a precision reticle placed exactly in the
center of the field of view for each section.
If you have good stereo vision ( I have none because one eye had a cataract
when I was a kid.) you may be able to satisfy your own  requirements without
the reticles but later find that other users get a headache from prolonged
use, depending on fusion capability.
I tried to align a binocular eyepiece a few years ago by switching my good
eye back and forth as I tweaked the adjustments. The owner told me I did a
terrible job and could not fuse the images!  I did not have a center or
boresight reference.
Hope this helps. Paul V.

References:

Re: (ATMoB:Discuss) Barska Binoculars collimation procedure

From: mariomendes a t attbi.com

Re: (ATMoB:Discuss) Barska Binoculars collimation procedure

From: "Matt Phelps" <mphelps a t cfa.harvard.edu>