MoonIlluminationConstraint

class astroplan.MoonIlluminationConstraint(min=None, max=None, ephemeris=None)

Bases: astroplan.Constraint

Constrain the fractional illumination of the Earth’s moon.

Constraint is also satisfied if the Moon has set.

Parameters

minfloat or None (optional)

Minimum acceptable fractional illumination (inclusive). None indicates no limit.

maxfloat or None (optional)

Maximum acceptable fractional illumination (inclusive). None indicates no limit.

ephemerisstr, optional

Ephemeris to use. If not given, use the one set with solar_system_ephemeris (which is set to ‘builtin’ by default).

Methods Summary

bright([min, max])	initialize a MoonIlluminationConstraint with defaults of a minimum of 0.65 and no maximum
compute_constraint(times, observer, targets)	Actually do the real work of computing the constraint.
dark([min, max])	initialize a MoonIlluminationConstraint with defaults of no minimum and a maximum of 0.25
grey([min, max])	initialize a MoonIlluminationConstraint with defaults of a minimum of 0.25 and a maximum of 0.65

Methods Documentation

classmethod bright(min=0.65, max=None, **kwargs)

initialize a MoonIlluminationConstraint with defaults of a minimum of 0.65 and no maximum

Parameters

minfloat or None (optional)

Minimum acceptable fractional illumination (inclusive). None indicates no limit.

maxfloat or None (optional)

Maximum acceptable fractional illumination (inclusive). None indicates no limit.

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.

classmethod dark(min=None, max=0.25, **kwargs)

initialize a MoonIlluminationConstraint with defaults of no minimum and a maximum of 0.25

Parameters

minfloat or None (optional)

Minimum acceptable fractional illumination (inclusive). None indicates no limit.

maxfloat or None (optional)

Maximum acceptable fractional illumination (inclusive). None indicates no limit.

classmethod grey(min=0.25, max=0.65, **kwargs)

initialize a MoonIlluminationConstraint with defaults of a minimum of 0.25 and a maximum of 0.65

Parameters

minfloat or None (optional)

Minimum acceptable fractional illumination (inclusive). None indicates no limit.

maxfloat or None (optional)

Maximum acceptable fractional illumination (inclusive). None indicates no limit.