NavList:
A Community Devoted to the Preservation and Practice of Celestial Navigation and Other Methods of Traditional Wayfinding
Re: Re-Silvering
From: Brian Whatcott
Date: 2002 Oct 15, 22:22 -0500
From: Brian Whatcott
Date: 2002 Oct 15, 22:22 -0500
At 08:34 PM 10/15/02, you wrote: >Does anyone know of any firms that still re-silver sextant mirrors? I am >looking for outfits or people on the continental US and Canada. The only >firm that I knew of was Maryland Precision Nautical out of Baltimore but >the main owner passed away last summer. > >Thanks, > >Robert There is by all accounts a lively business in re aluminizing astronomical mirrors, of 6 inch diameter and up... But the newtonian telescope also features a front surface plane diagonal, of elliptical shape, whose major diameter may vary from 1/2 to 2 inches. I wonder if any mirror is currently silvered? Aluminizing is rugged and quite long lasting. Some astronomical mirrors have a surface coating on top of the aluminizing which confers great rub resistance too. Brian Whatcott Altus OK Eureka!