NavList:
A Community Devoted to the Preservation and Practice of Celestial Navigation and Other Methods of Traditional Wayfinding
Refraction and humidity
From: Bill B
Date: 2007 Mar 27, 18:08 -0400
From: Bill B
Date: 2007 Mar 27, 18:08 -0400
Alex Following up on Sunday's conversation on refraction for star-to-star angular separation, the almanac states mean refraction is calculated for a temperature of 10C, pressure of 1010 mb, humidity of 80% and wavelength of 0.50169um. That would indicate my recollection that humidity is a component of refraction is correct, and my belief that the color of a star/body may affect refraction. I do not know if dust in the air will affect refraction like humidity. The important point in context is how much refraction will be affected, especially for lower bodies (20d to 30d). I don't have a clue. Perhaps the list can be of help. Bill --~--~---------~--~----~------------~-------~--~----~ To post to this group, send email to NavList@fer3.com To unsubscribe, send email to NavList-unsubscribe@fer3.com -~----------~----~----~----~------~----~------~--~---
