NavList:
A Community Devoted to the Preservation and Practice of Celestial Navigation and Other Methods of Traditional Wayfinding
Re: 3 sights SR example
From: Andrés Ruiz
Date: 2017 Jul 4, 08:35 +0200
From: Andrés Ruiz
Date: 2017 Jul 4, 08:35 +0200
Yes Yves,
maybe a nautica astrolabe, jajajaja
The same example with an error of Ho + 3'/60
| Date | UT | Star | GHA | Dec | Ho |
| 20/02/1990 | 06:39:15 | Sirius | 148º 34.2' | 16º 42.2' S | 57º 43.6' |
| 20/02/1990 | 06:40:54 | Capella | 171º 10.3' | 45º 59.6' | 32º 13.1' |
| 20/02/1990 | 06:42:34 | Pollux | 134º 23.9' | 28º 3.1' | 30º 2.9' |
- Solution by MSH LS SR: 11º 04.1' S, 178º 38.8' E
- Fix by bisectors: 11º 06.0' S, 178º 35.6' E
Error(1,2) = 3.7 nm
Best regards,
--
2017-07-03 21:13 GMT+02:00 Robin Jouan <NoReply_RobinJouan@fer3.com>:
Andrés,
OK, but it is tricky :
- 18' systematic error is a lot ! May be with a Jacob cross-staff ?
- and this is combined with geometrical bad-conditioning (DOP = 3.9) !
I think you should have mentioned that there was a big systematic error.
Yves
File:
