def _do_scan(self, _target, _receiver, _frequency):
beamsize = VAngle(_receiver.get_beamsize(max(_frequency)))
_subscans = []
#Fill informations for each OTF subscan in the 4 directions
#This is a default implementation, maybe one day we could parametrize
#this if needed
for _const_axis, _direction in [('LON', 'INC'),
('LAT', 'INC')]:
_subscans.append(subscan.get_cen_otf_tsys(_target,
self.duration,
self.length,
VAngle(0.0),
_const_axis,
_direction,
self.frame,
beamsize))
return _subscans
def _do_scan(self, _target, _receiver, _frequency):
self._get_spacing(_receiver, _frequency)
if self.scan_axis == "LON":
self.unit_subscans = self.dimension_y
elif self.scan_axis == "LAT":
self.unit_subscans = self.dimension_x
_subscans = []
logger.debug("scan axis: %s" % (self.scan_axis,))
if self.scan_axis == self.frame.lon_name or self.scan_axis == "LON":
_const_axis = 'LAT'
if self.start_point == "TL" or self.start_point == "TR":
_offsets = reversed(self.offset_y)
else:
_offsets = self.offset_y
if self.start_point == "TL" or self.start_point == "BL":
if self.frame == frame.EQ or self.frame == frame.GAL: #RA and GAL-LON are reversed!!
_directions = ("DEC", "INC")
else:
_directions = ("INC", "DEC")
else:
if self.frame == frame.EQ or self.frame == frame.GAL:
_directions = ("INC", "DEC")
else:
_directions = ("DEC", "INC")
for _offset, _direction in itertools.izip(_offsets,
itertools.cycle(_directions)):
logger.debug("OTF: %d offset %s direction %s" % (self.ID,
_offset,
_direction))
_subscans.append(subscan.get_cen_otf_tsys(_target,
self.duration_x,
self.length_x,
_offset,
_const_axis,
_direction,
self.frame,
self.beamsize))
elif self.scan_axis == self.frame.lat_name or self.scan_axis == "LAT":
_const_axis = 'LON'
if self.start_point == "TR" or self.start_point == "BR":
if self.frame == frame.EQ or self.frame == frame.GAL:
_offsets = self.offset_x
else:
_offsets = reversed(self.offset_x)
else:
if self.frame == frame.EQ or self.frame == frame.GAL:
_offsets = reversed(self.offset_x)
else:
_offsets = self.offset_x
if self.start_point == "BL" or self.start_point == "BR":
_directions = ("INC", "DEC")
else:
_directions = ("DEC", "INC")
for _offset, _direction in itertools.izip(_offsets,
itertools.cycle(_directions)):
logger.debug("OTF: %d offset %s direction %s" % (self.ID,
_offset,
_direction))
_subscans.append(subscan.get_cen_otf_tsys(_target,
self.duration_y,
self.length_y,
_offset,
_const_axis,
_direction,
self.frame,
self.beamsize))
return _subscans
