LSTLIM

Name

lstlim

Purpose (one Line Only)

Compute the LST range for time of observation

Description

Calling Sequence

lstlim,ra,dec,answer,rlst,slst,quiet=quiet

Inputs

ra - RA of target (J2000) in radians or as a sexigesimal string
dec - Declination of target (J2000) in radians or as a sexigesimal string

Optional Input Parameters

Keyword Input Parameters

AMCRIT - airmass at start and stop of LST range (default=2.5)
QUIET - flag if set will suppress printed output (echo of RA,Dec; the
lst string, answer, and the length of time above the limit in
hours)

Outputs

answer - formatted string of the start and ending local sidereal time
to the nearest minute
rlst - local sidereal time at the time of rising (2.5 airmasses)
slst - local sidereal time at the time of setting (2.5 airmasses)

Keyword Output Parameters

Common Blocks

Side Effects

Restrictions

Only works for Lowell Observatory right now. Airmass limit is hard-coded.

Procedure

Modification History

2004/04/13 - Marc W. Buie, Lowell Observatory, first very rough version.
2004/10/26, MWB, added AMCRIT and some input validation.
2008/04/08, MWB, modified formatting of printed output.