LocalTimeConstraint#

class astroplan.LocalTimeConstraint(min=None, max=None)[source]#

Bases: Constraint

Constrain the observable hours.

Parameters:

mintime: Earliest local time (inclusive). None indicates no limit.
maxtime: Latest local time (inclusive). None indicates no limit.

Examples

Constrain the observations to targets that are observable between 23:50 and 04:08 local time:

>>> from astroplan import Observer
>>> from astroplan.constraints import LocalTimeConstraint
>>> import datetime as dt
>>> subaru = Observer.at_site("Subaru", timezone="US/Hawaii")
>>> # bound times between 23:50 and 04:08 local Hawaiian time
>>> constraint = LocalTimeConstraint(min=dt.time(23,50), max=dt.time(4,8))

Methods Summary

compute_constraint(times, observer, targets)

Actually do the real work of computing the constraint.

Methods Documentation

compute_constraint(times, observer, targets)[source]#

Actually do the real work of computing the constraint. Subclasses override this.

Parameters:

timesTime: The times to compute the constraint
observerObserver: the observaton location from which to apply the constraints
targetssequence of Target: The targets on which to apply the constraints.

Returns:

constraint_result2D array of float or bool: The constraints, with targets along the first index and times along the second.