MakeRawVisitInfoViaObsInfo

class lsst.obs.base.MakeRawVisitInfoViaObsInfo(log=None)

Bases: object

Base class functor to make a VisitInfo from the FITS header of a raw image using ObservationInfo translators.

Subclasses can be used if a specific MetadataTranslator translator should be used.

The design philosophy is to make a best effort and log warnings of problems, rather than raising exceptions, in order to extract as much VisitInfo information as possible from a messy FITS header without the user needing to add a lot of error handling.

Parameters

loglsst.log.Log or None

Logger to use for messages. (None to use Log.getLogger("MakeRawVisitInfoViaObsInfo")).

Attributes Summary

metadataTranslator

Header translator to use to construct VisitInfo, defaulting to automatic determination.

Methods Summary

__call__(md[, exposureId])	Construct a VisitInfo and strip associated data from the metadata.
observationInfo2visitInfo(obsInfo[, log])	Construct a VisitInfo from an ObservationInfo

Attributes Documentation

metadataTranslator = None

Header translator to use to construct VisitInfo, defaulting to automatic determination.

Methods Documentation

__call__(md, exposureId=None)

Construct a VisitInfo and strip associated data from the metadata.

Parameters

mdlsst.daf.base.PropertyList or lsst.daf.base.PropertySet

Metadata to pull from. Items that are used are stripped from the metadata.

exposureIdint, optional

Ignored. Here for compatibility with MakeRawVisitInfo.

Returns

visitInfolsst.afw.image.VisitInfo

VisitInfo derived from the header using a MetadataTranslator.

static observationInfo2visitInfo(obsInfo, log=None)

Construct a VisitInfo from an ObservationInfo

Parameters

obsInfoastro_metadata_translator.ObservationInfo

Information gathered from the observation metadata.

loglogging.Logger or lsst.log.Log, optional

Logger to use for logging informational messages. If None logging will be disabled.

Returns

visitInfolsst.afw.image.VisitInfo

VisitInfo derived from the supplied ObservationInfo.