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A Community Devoted to the Preservation and Practice of Celestial Navigation and Other Methods of Traditional Wayfinding
Re: Home made FSM for AH or idx-mirror
From: Igor S.
Date: 2019 Sep 30, 05:02 -0700
From: Igor S.
Date: 2019 Sep 30, 05:02 -0700
Fred,
You are right. I had no control over this parameter but assuming that all modern glass is a float glass quality I can also assume it is flat enough for this particular application. The square 6mm mirror in the photo's have already been tested. Using my exact coordinates as a DR position I've got systematically small intercept amplitudes (less than 1' ) upon leveling it with precision vials. Same results were obtained with an optical grade FSM which I used as a reference.
I can judge home made FSM only on basis of final (systematic) results.
kind regards,
Igor
Re: Home made FSM for AH or idx-mirror
From: Fred Hebard
Date: 2019 Sep 29, 12:30 -0400
flatness of the mirror is important, and may be a factor with some inexpensive ones.Fred Hebard
