NavList:
A Community Devoted to the Preservation and Practice of Celestial Navigation and Other Methods of Traditional Wayfinding
Nautical Almanac-Venus phase correction.
From: Dave Walden
Date: 2006 Jul 24, 22:40 -0500
Can anyone tell me the equation used to calculate the venus phase
correction. See 16. Composition of Corrections in the Explanation
section. I know the phase correction was formerly in the altitude
correction table but is now included in the tablulated GHA and Dec. I
understand center of light, and could derive from first priciples, but
sometimes that's not what's actually used. I am reproducing the Naut
Alm tables from the JPL ephemeris, but lack the value of this
correction.
Thanks.
--~--~---------~--~----~------------~-------~--~----~
To post to this group, send email to NavList@fer3.com
To , send email to NavList-@fer3.com
-~----------~----~----~----~------~----~------~--~---
From: Dave Walden
Date: 2006 Jul 24, 22:40 -0500
Can anyone tell me the equation used to calculate the venus phase
correction. See 16. Composition of Corrections in the Explanation
section. I know the phase correction was formerly in the altitude
correction table but is now included in the tablulated GHA and Dec. I
understand center of light, and could derive from first priciples, but
sometimes that's not what's actually used. I am reproducing the Naut
Alm tables from the JPL ephemeris, but lack the value of this
correction.
Thanks.
--~--~---------~--~----~------------~-------~--~----~
To post to this group, send email to NavList@fer3.com
To , send email to NavList-@fer3.com
-~----------~----~----~----~------~----~------~--~---
