Re: [guide-user] Re: Hour angle, LST

Stephen Tonkin Jun 11, 2003

Dennis L. Means <star3248@...> wrote:
> I think our definitions of LHA are different. My definition
> read in hours, minutes, and seconds either east(-) or west (+)
> of the meridian.

Hour angle is defined as the angle, measured *westward* along the
celestial equator, between the meridian and the hour circle of the
object. Using your definition, you'd run into trouble when it comes to
sidereal time, which is defined as the hour angle of the FPA.

--
Stephen Tonkin