VLA LST Calculator: Difference between revisions
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(Created page with "== VLA LST Calculator == This is a short script that converts a time to Local Apparent Sidereal Time (LAST) at the VLA. This script can easily be modified to work for other obse...") |
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Latest revision as of 12:49, 20 March 2012
VLA LST Calculator
This is a short script that converts a time to Local Apparent Sidereal Time (LAST) at the VLA. This script can easily be modified to work for other observatories recognized by CASA's 'measures' toolkit. This version reports the current time, and sunrise and sunset on the current day.
t1 = me.epoch('utc', 'today')
me.doframe(me.observatory('VLA'))
me.doframe(t1)
t2 = me.measure(t1,'LAST')
d1=me.riseset(me.direction('sun'))
t_rise = d1['rise']['last']
t_set = d1['set']['last']
print('LST now: '+qa.time(qa.sub(t2['m0'],qa.floor(t2['m0'])), prec=7))
print('LST sunrise: '+qa.time(qa.sub(t_rise['m0'],qa.floor(t_rise['m0'])),prec=7))
print('LST sunset: '+qa.time(qa.sub(t_set['m0'],qa.floor(t_set['m0'])),prec=7))
