def _do_scan(self, _target, _receiver, _frequency):
_subscans = []
for element in self.sequence:
for repetitions in range(element[0]):
if element[1] == "on": #ON SOURCE
ss = subscan.get_sidereal(
_target,
Coord(self.offset_frame,
VAngle(0.0),
VAngle(0.0)),
self.duration,
is_cal = element[2])
elif element[1] == "off": #OFF SOURCE
ss = subscan.get_sidereal(
_target,
Coord(self.offset_frame,
self.offset_lon,
self.offset_lat),
self.duration,
is_cal=element[2])
else:
raise ScheduleError("unknown onoff position: %s" % (element[1],))
#TSYS is calculated at off position
st = subscan.get_tsys(_target,
Coord(self.offset_frame,
self.offset_lon,
self.offset_lat))
_subscans.append((ss, st))
return _subscans
def _do_scan(self, _target, _receiver, _frequency):
beamsize = VAngle(_receiver.get_beamsize(max(_frequency)))
_subscans = []
null_offset = Coord(_target.coord.frame,
VAngle(0),
VAngle(0))
_subscans.append((subscan.get_sidereal(_target,
null_offset,
0,
is_cal = False),
subscan.get_tsys(_target,
null_offset)))
_subscans.append(subscan.get_skydip_tsys(_subscans[0][0].ID,
_target,
self.duration,
self.start,
self.stop,
self.offset))
return _subscans