ALTOHA

Name

altoha

Purpose (one Line)

Convert an object altitude to its hour angle.

Description

Calling Sequence

altoha,alt,dec,lat,ha,type

Inputs

alt - Altitude of object above horizon in radians
dec - Declination of object in radians
lat - Latitude of observatory in radians

Optional Input Parameters

Keyword Input Parameters

Outputs

ha - hour angle for object (< 0 is East, > 0 is West)
type - indicates the success of the conversion
-1 object is always below ALT
0 conversion ok, HA valid
1 object is always above ALT

Keyword Output Parameters

Common Blocks

Side Effects

Restrictions

Procedure

Modification History

94/05/07 - Written by Marc W. Buie, Lowell Observatory
2000/11/06, MWB, changed to permit vector inputs.