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A Community Devoted to the Preservation and Practice of Celestial Navigation and Other Methods of Traditional Wayfinding
Re: C.Plath on Ebay
From: Alexandre Eremenko
Date: 2005 Jun 10, 02:05 -0500
From: Alexandre Eremenko
Date: 2005 Jun 10, 02:05 -0500
Yes, of course. This picture could be used in a beginner's textbook to explain what is "collimation error":-) Modern sextant scopes (for the reasons that excape me) do not have collimation error adjustment, with one exception: the inverting scope of SNO-T. Once Bill suggested to adjust collimation error with a hammer... This is apparently what the owner of this sextant did, and after he failed, he sells the sextant:-) Alex. On Thu, 9 Jun 2005, Robert Eno wrote: > Have a look at this sextant on e-bay. > > Are my eyes deceiving me or is the rising piece on the scope bent out of shape? > > http://cgi.ebay.ca/ws/eBayISAPI.dll?ViewItem&category=37971&item=7328115519&rd=1 >
