getMidpointFromTimespan

lsst.ap.association.getMidpointFromTimespan(timespan, allowUnbounded=True)

Safely retrieve the midpoint in TAI from a Timespan.

Parameters

timespanlsst.daf.butler.Timespan of astropy.time.Time

A Timespan centered on the midpoint of a visit.

allowUnboundedbool, optional

If set, return the start or end of an unbounded timespan.

Returns

midpointastropy.time.Time

The midpoint of the timespan.

Raises

ValueError

Raised if either the start or end of the timespan is None, and allowUnbounded is not set.

ValueError

Raised if the timespan is empty.