LocalTimeConstraint

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

Bases: astroplan.Constraint

Constrain the observable hours.

Parameters:

min : time

Earliest local time (inclusive). None indicates no limit.

max : time

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:

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.