The program "srcTimes" (written by Phil Perillat and available on most AO computers) computes the LST rise, transit and set times at  Arecibo for either a single source or for a list of sources. The default input for the program are the equatorial coordinates in J2000 and the output is: Right_Ascension Declination Rising_Time Transit_Time and Setting_Time.

Options for the program are

• -r exclude rise times
• -t exclude transit times
• -s exclude set times
• -w input format is: srcName hh mm ss.s dd mm ss.s
• -x input format is: srcName hhmmss.s ddmmss.s
• -z maxZa maximum zenith angle to use (overrides default) : zaMaxDeg

Interactively the program is called via srcTimes or srcTimes -options then press enter, after that enter the coordinates. To exit type ctrl-d.
Some examples:

srcTimes
161341.1 341247.9 (hhmmss.s ddmmss.s in J2000)
and the output would be
16:13:41.1 34:12:47.9 15:21:19 16:13:45 17:06:11
(RA Dec Rise_Time Transit_Time Set_Time)
continue entering coordinates if desired or hit ctrl-d to exit.

srcTimes -t
161341.1 341247.9 (hhmmss.s ddmmss.s)
16:13:41.1 34:12:47.9 15:21:19 17:06:11
(RA Dec Rise_Time Set_Time)

srcTimes -wt
name 16 13 41.1 34 12 47.9 (srcName hh mm ss.s dd mm ss.s)
name 16:13:41.1 34:12:47.9 15:21:19 17:06:11
(srcName RA Dec Rise_Time Set_Time)
 

For a list of sources, the program is called with
srcTimes (-options) < inputfile , where the data in the inputfile could be:
161341.1 341247.9
110000 121212.1
the output would then be:
16:13:41.1 34:12:47.9 15:21:19 16:13:45 17:06:11
11:00:00.0 12:12:12.1 09:42:30 11:00:07 12:17:44

You can also send the output data to a file with
srcTimes (-options) < inputfile > outputfile
or if using the program interactively
srcTimes (-options) > outputfile
hhmmss.s ddmmss.s
ctrl-d (only after ctrl-d the data is written in the outputfile).
 
 

Page last modified by Mayra E. Lebrón (mlebron@naic.edu) on 24April 2003.