Constraint¶

class
astroplan.
Constraint
[source]¶ Bases:
object
Abstract class for objects defining observational constraints.
Methods Summary
__call__
(observer, targets[, times, …])Compute the constraint for this class compute_constraint
(times, observer, targets)Actually do the real work of computing the constraint. Methods Documentation

__call__
(observer, targets, times=None, time_range=None, time_grid_resolution=<Quantity 0.5 h>, grid_times_targets=False)[source]¶ Compute the constraint for this class
Parameters: observer :
Observer
the observation location from which to apply the constraints
targets : sequence of
Target
The targets on which to apply the constraints.
times :
Time
The times to compute the constraint. WHAT HAPPENS WHEN BOTH TIMES AND TIME_RANGE ARE SET?
time_range :
Time
(length = 2)Lower and upper bounds on time sequence.
time_grid_resolution :
quantity
Timegrid spacing
grid_times_targets : bool
if True, grids the constraint result with targets along the first index and times along the second. Otherwise, we rely on broadcasting the shapes together using standard numpy rules.
Returns
——
constraint_result : 1D or 2D array of float or bool
The constraints. If 2D with targets along the first index and times along the second.

compute_constraint
(times, observer, targets)[source]¶ Actually do the real work of computing the constraint. Subclasses override this.
Parameters: times :
Time
The times to compute the constraint
observer :
Observer
the observaton location from which to apply the constraints
targets : sequence of
Target
The targets on which to apply the constraints.
Returns: constraint_result : 2D array of float or bool
The constraints, with targets along the first index and times along the second.
