NavList:
A Community Devoted to the Preservation and Practice of Celestial Navigation and Other Methods of Traditional Wayfinding
Re: Single-handed sights
From: Lu Abel
Date: 2007 Oct 22, 13:12 -0700
From: Lu Abel
Date: 2007 Oct 22, 13:12 -0700
Makes even more sense! Thanks, Gary glapook@PACBELL.NET wrote: > Gary LaPook writes: > > I use the inverse of your method, I start counting seconds from the > time of the sight until I can look at my watch, never more than 3 > seconds so less opportunity for the count to get off by any > significant amount. I use a digital watch that has a push button for > illumination at night. I check its error after the round of sights > using a more accurate watch or radio time signal. > > gl > > On Oct 22, 10:29 am, Lu Abelwrote: > >>Gary J. LaPook wrote: >> >>>Gary LaPook wrote: >> >>>I use one of those little hand held dictaphones. I put it in my shirt >>>pocket, start it recording and then just talk into it with the sextant >>>altitude and time.M uch easier than trying to juggle sextant, pencil and >>>paper especially if taking many sights. Go below and play it back and >>>write down the figures. >> >>I think everyone's experience will be different, but at one point in >>learning celestial I took a lot of sights without a helper. >> >>How? First, I pre-adjusted my sextant to be close to the expected Hs. >>Then I looked at my watch and noted time to the second. Then I simply >>started counting one-one hundred, two-two hundred, ... while I adjusted >>my sextant to its final reading. Then noted time and reading in my >>notebook. >> >>With this method, you should be able to get a sextant reading within 15 >>to 20 seconds of starting counting. I did a few trial runs of simply my >>time counting to make sure I wasn't counting too fast or slow. I >>believe that even after 30 seconds I was within one second or less. >> >>I was taking sights from a known position and my readings were no less >>accurate than what I got when using a helper on previous expeditions. >> >>Lu Abel > > > > > > --~--~---------~--~----~------------~-------~--~----~ To post to this group, send email to NavList@fer3.com To , send email to NavList-@fer3.com -~----------~----~----~----~------~----~------~--~---