Usage of ComputeLST
Return to directory of Todd's CASA extensions
Computes the LST (in hours) for a specified time (in MJD seconds or UT on the current date) and longitude. If neither time is specified, it
uses the current time. See also
ComputeLSTDay.
Usage:
au.ComputeLST(mjdsec, longitude=-67.7549, ut=None, hms=False, observatory=None,
date=None, verbose=False, prec=0)
Inputs:
- mjdsec: MJD seconds
- ut: ut time on the current day as a HH:MM:SS string or floating point hours
- longitude: degrees, where east of Greenwich is positive. Default = ALMA.
- hms: if True, then return the time as a HH:MM:SS string, instead of floating point hours
- prec: number of fractional seconds digits to show (if hms=True)
- observatory: if specified, then ignore the longitude parameter and look up the value in CASA
- date: a date string, or date/time string. Either of these formats is valid:
- 2011/10/15 05:00:00
- 2011/10/15-05:00:00
- 2011-10-15 05:00:00
- 2011-10-15T05:00:00
- 2011-Oct-15T05:00:00
Examples:
CASA <16>: au.ComputeLST(55600*86400,-67)
Out[16]: 4.716901142775896
CASA <13>: au.ComputeLST(date='2015-01-17 16:38', hms=True)
Out[13]: '19:54:07'
--
ToddHunter - 2013-09-09