LocalTimeConstraint

class astroplan.LocalTimeConstraint(min=None, max=None)

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)

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.