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Re: How does the AstraIIIb split mirror work?
From: Joel Jacobs
Date: 2004 Apr 24, 06:48 -0400
From: Joel Jacobs
Date: 2004 Apr 24, 06:48 -0400
Thanks Jim, Since the horizon mirror is back surfaced, it would appear that all previous arguments are in order. Joel Jacobs ----- Original Message ----- From: "Jim Thompson"To: Sent: Friday, April 23, 2004 9:32 PM Subject: Re: How does the AstraIIIb split mirror work? > > -----Original Message----- > > From: Joel Jacobs > > A question for Jim T., is one or both of your mirrors front or back > > silvered. > > Index mirror is front-silvered. > Horizon mirror is back-silvered. > > I checked my sextant, but see also > http://celestaire.com/catalog/Marine_Sextants/Astra_IIIB/ > > Jim