- craftutils.observation.epoch.HAWKIImagingEpoch.check_filter(fil: str)
If a filter name is not present in the various lists and dictionaries that use it, adds it. :param fil: :return: False if None, True if not.
If a filter name is not present in the various lists and dictionaries that use it, adds it. :param fil: :return: False if None, True if not.