[Logo] Argo Navis Users' Group
  [Search] Search   [Recent Topics] Recent Topics   [Hottest Topics] Hottest Topics   [Top Downloads] Top Downloads   [Groups] Back to home page 
[Register] Register /  [Login] Login 
Mode Setup Location RSS feed
Forum Index » User Forum
Author Message

Joined: 17/10/2019
Messages: 4
This may have been discussed several years ago in the former Yahoo groups: when should one change location in the AN, esp. if locations may be close to each other. For example, do I need to change locations if they are 50 miles (80km) apart (40.2N 75.5E versus 40.7N 75.9W)?
How about ~228 miles (367km) 41.7N 77.7W from above two sites


Joined: 17/10/2019
Messages: 122
Location: Mount Kuring-Gai NSW Australia
Thanks for the post.

Argo Navis takes into account the correction for parallax error depending on where you are standing on Earth whilst observing solar system objects.

For artificial satellites in low earth-orbit you should use a reasonably accurate set of latitude longitude coordinates to compute where the satellite will appear above your local horizon.

For the Moon, a distance between observing sites of 228 miles would make a negligible difference given it is a quarter of a million miles to the Moon.

For users with exact polar aligned mounts who also use TPAS, reasonably accurate latitude and longitude can help refine the polar misalignment errors.

Gary Kopff
Managing Director
Wildcard Innovations Pty. Ltd.
20 Kilmory Place
Mount Kuring-Gai NSW 2080
Phone +61-2-9457-9049
[Email] [WWW]
Forum Index » User Forum
Go to:   
Mobile view
Powered by JForum 2.6.2 © 2019 JForum Team • Maintained by Andowson Chang and Ulf Dittmer