NavList:
A Community Devoted to the Preservation and Practice of Celestial Navigation and Other Methods of Traditional Wayfinding
Re: Raw data for bubble
From: Peter Fogg
Date: 2007 Mar 11, 11:29 +1100
From: Peter Fogg
Date: 2007 Mar 11, 11:29 +1100
Bill asked: > Does this look like the method you use to calculate slope? > > Delta H (rate of change in arc minutes) per minute of time (divide by 60 > for degrees) > > Delta H = 15 * cosine latitude * sine azimuth (or its supplement) I used a graphical method to indicate slope which gave +32 minutes of arc over 5 minutes. This formula gives 32.02; so looks good. Thanks Bill --~--~---------~--~----~------------~-------~--~----~ To post to this group, send email to NavList@fer3.com To , send email to NavList-@fer3.com -~----------~----~----~----~------~----~------~--~---
