NavList:
A Community Devoted to the Preservation and Practice of Celestial Navigation and Other Methods of Traditional Wayfinding
Re: sextant index error measurement
From: Richard M Pisko
Date: 2006 Nov 8, 14:56 -0700
From: Richard M Pisko
Date: 2006 Nov 8, 14:56 -0700
On Sat, 04 Nov 2006 01:03:48 -0500, Bill wrote: > I had lunch with an old college buddy a while back that was US > Navy and now owns a surveying company. On topic he did > mention, if I recall correctly, that in some parts of the USA > traditional methods (optical?) had to take a break during the > hottest part of the day due to refraction. > I checked with a friend who worked in Arizona. He said he had a "clear mental image of a range pole at a half mile looking like a snake through the transit", and that the more important angles were shot in the morning. But . . . they kept working. Probably depends on the accuracy you need. -- Richard, 2006-Nov-07 10:56:01 AM GMT - 6 hours for summer --~--~---------~--~----~------------~-------~--~----~ To post to this group, send email to NavList@fer3.com To , send email to NavList-@fer3.com -~----------~----~----~----~------~----~------~--~---