NavList:
A Community Devoted to the Preservation and Practice of Celestial Navigation and Other Methods of Traditional Wayfinding
From: G Becker
Date: 2013 Aug 21, 18:25 -0400
Thank you for the reply. Do you mean remove the grid target and place a mirror in front of the area where the grid target was? My goal for this autocollimator was to test the crosshairs on my auto level.
-----Original Message-----
From: NavList@fer3.com
[mailto:NavList@fer3.com] On Behalf Of Norm
Goldblatt
Sent: Wednesday,
August 21, 2013 5:50 PM
To: george@gwbeckerpls.com
Subject: [NavList] Re: Request for
autocollimator help
I'm going to approach at a different 'angle'. Autocollimators are used to establish that two surfaces are parallel to each other and/or measure accurately the angle between them. How the crosshairs appear isn't really important. It's mostly cosmetic. Now, if the return reflection from a flat surface (or retroreflector) is rotated with respect to the image of the crosshairs formed by the eyepiece directly, That would be annoying, but not even that is not 'deadly'.
I agree with Davidson that there's no adjustment, as the angles are strictly determined by the beamsplitting cube, which is very precise.
So, if you put a flat
mirror, focus so that you have a clear view of both direct image of reticle and
reflection from mirror, are the axes twisted, or are the two arms of reticle
and reflection parallel?
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