Talk:Horizontal coordinate system

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Azimuth and altitude? I thought it was azimuth and elevation. Denelson83 10:28, 21 Dec 2004 (UTC)

I have also heard it as elevation. I have added a note to the article to reflect that usage. kostmo 00:24, 20 July 2006 (UTC)

I have read on the BDL glossary (Bureau des longitudes, french reference for ephemerides computation, sorry it is in french) that the azimuth is measured from south for astronomers and from north for sailors. So I guess it should be from south for this article about celestial coordinate systems. What do you think about that ? —Preceding unsigned comment added by 194.153.110.3 (talk • contribs) 16:25, 18 January 2005

[edit] Transformation of coordinates

This whole section is wrong. The transformation between the horizon and equatorial coordinate systems is time-dependant. Jason Quinn 22:31, 2 October 2007 (UTC)

Hour angle is time-dependant. Orionus 12:28, 3 October 2007 (UTC)

[edit] Picture

The picture appears to have an error: the North pole should be to the North of Zenith, not South of it. 130.208.188.164 (talk) 05:30, 16 January 2008 (UTC)