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SCULIB_APPARENT_2_MP
- Calculate mean place from a given apparent RA,Dec
- Description:
- This routine takes the apparent RA,Dec as input and converts
them to the position in a specified output coordinate system.
Allowed OUTPUT_COORDS are AZ, RJ, RB, GA, EQ.
This is the reverse of SCULIB_CALC_APPARENT
- Invocation:
- CALL SCULIB_APPARENT_2_MP(RA_APP, DEC_APP, OUT_COORDS,
LST, MJD, LAT_OBS, LONG, LAT,
STATUS )
- Arguments:
-
-
RA_APP = DOUBLE PRECISION (Given)
-
Apparent RA of point at date (radians)
-
DEC_APP = DOUBLE PRECISION (Given)
-
Apparent Dec
-
OUT_COORDS = CHARACTER
(
) (Given)
-
-
LST = DOUBLE PRECISION (Given)
-
LST for requested coordinates (for AZ and HA)
-
MJD = DOUBLE PRECISION (Given)
-
Modified Julian date of observation
-
LAT_OBS = DOUBLE PRECISION (Given)
-
Latitude of observatory in radians.
For JCMT this value is 3.46026051751D-1
-
LONG = DOUBLE PRECISION (Returned)
-
longitude of centre in input coord system (radians)
-
LAT = DOUBLE PRECISION (Returned)
-
latitude of centre in input coord system (radians)
-
STATUS = INTEGER (Given and returned)
-
Global status
-
Copyright
- Copyright ©1995,1996,1997,1998,1999 Particle Physics and Astronomy
Research Council. All Rights Reserved.
Next: SCULIB_APPARENT_2_TP - calculate tangent plane coordinates from apparent RA, Decs
Up: Library APIs
Previous: SCULIB_ANALYSE_PHOTOM_JIGGLE - analyse the jiggle map made by a bolometer during a PHOTOM observation
SURF Programming Interface
Starlink System Note 72
Tim Jenness, John F. Lightfoot
Joint Astronomy Centre, Hilo, Hawaii
10 July 2000
E-mail:ussc@star.rl.ac.uk
Copyright © 2008 Science and Technology Facilities Council