NavList:
A Community Devoted to the Preservation and Practice of Celestial Navigation and Other Methods of Traditional Wayfinding
From: Randall Morrow
Date: 2013 May 14, 10:04 -0700
My lunar distance sights are showing some progress, thanks to advice from many Nav-List members.
Last night I shot with Jupiter and got the following results: (local times)
Time 20-27-18 LD 17* 55.4 Error LD 0.0 Error Lo 01.4’
Time 20-35-12 LD 17* 58.7 Error LD 0.1 Error Lo 04.0’
Time 20-40-41 LD 18* 01.4 Error LD 0.6 Error Lo 18.1’
Time 20-43-20 LD 18* 03.8 Error LD 1.9 Error Lo 56.3
Each was an average of 5 observations less than a minute apart, and the story I will stick to is that fatigue set in towards the end of the session. (Naturally I am pleased with the first two)
1)I used the cardboard “peep-sights” under the rubber eye cups to help field centering.
2)I removed my glasses for all the sights and re-focused as needed.
3)I used a light green filter to dim balance Moon-Jupiter brightness on sights two-four
4)Index correction of -0.2’ was checked by the Sun earlier in the day
5)The sextant was my Astra with a 7 X scope.
There is hope for me yet. Thanks for everything!
Just a post-script; I enjoy celstial sight taking very much and between June 2010 and last night I have done 3900 observations and will pass 4000 by this weekend. I have the data from all those sights in 13 shirt-pocket notebooks with 250-400 sights each.
----------------------------------------------------------------
NavList message boards and member settings: www.fer3.com/NavList
Members may optionally receive posts by email.
To cancel email delivery, send a message to NoMail[at]fer3.com
----------------------------------------------------------------
