LsstComCamTranslator

class lsst.obs.lsst.translators.LsstComCamTranslator(header: Mapping[str, Any], filename: ResourcePathExpression | None = None)

Bases: LsstCamTranslator

Metadata translation for the LSST Commissioning Camera.

Attributes Summary

all_properties	All the valid properties for this translator including extensions.
cameraPolicyFile	Path to policy file relative to obs_lsst root.
detectorMapping	Mapping of detector name to detector number and serial.
detectorSerials	Mapping of detector serial number to raft, number, and name.
name	Name of this translation class

Methods Summary

can_translate(header[, filename])	Indicate whether this translation class can translate the supplied header.
fix_header(header, instrument, obsid[, filename])	Fix ComCam headers.
to_instrument()	The instrument used to observe the exposure.

Attributes Documentation

all_properties: dict[str, PropertyDefinition] = {'altaz_begin': <astro_metadata_translator.properties.PropertyDefinition object>, 'altaz_end': <astro_metadata_translator.properties.PropertyDefinition object>, 'boresight_airmass': <astro_metadata_translator.properties.PropertyDefinition object>, 'boresight_rotation_angle': <astro_metadata_translator.properties.PropertyDefinition object>, 'boresight_rotation_coord': <astro_metadata_translator.properties.PropertyDefinition object>, 'can_see_sky': <astro_metadata_translator.properties.PropertyDefinition object>, 'dark_time': <astro_metadata_translator.properties.PropertyDefinition object>, 'datetime_begin': <astro_metadata_translator.properties.PropertyDefinition object>, 'datetime_end': <astro_metadata_translator.properties.PropertyDefinition object>, 'detector_exposure_id': <astro_metadata_translator.properties.PropertyDefinition object>, 'detector_group': <astro_metadata_translator.properties.PropertyDefinition object>, 'detector_name': <astro_metadata_translator.properties.PropertyDefinition object>, 'detector_num': <astro_metadata_translator.properties.PropertyDefinition object>, 'detector_serial': <astro_metadata_translator.properties.PropertyDefinition object>, 'detector_unique_name': <astro_metadata_translator.properties.PropertyDefinition object>, 'exposure_group': <astro_metadata_translator.properties.PropertyDefinition object>, 'exposure_id': <astro_metadata_translator.properties.PropertyDefinition object>, 'exposure_time': <astro_metadata_translator.properties.PropertyDefinition object>, 'exposure_time_requested': <astro_metadata_translator.properties.PropertyDefinition object>, 'focus_z': <astro_metadata_translator.properties.PropertyDefinition object>, 'group_counter_end': <astro_metadata_translator.properties.PropertyDefinition object>, 'group_counter_start': <astro_metadata_translator.properties.PropertyDefinition object>, 'has_simulated_content': <astro_metadata_translator.properties.PropertyDefinition object>, 'instrument': <astro_metadata_translator.properties.PropertyDefinition object>, 'location': <astro_metadata_translator.properties.PropertyDefinition object>, 'object': <astro_metadata_translator.properties.PropertyDefinition object>, 'observation_counter': <astro_metadata_translator.properties.PropertyDefinition object>, 'observation_id': <astro_metadata_translator.properties.PropertyDefinition object>, 'observation_reason': <astro_metadata_translator.properties.PropertyDefinition object>, 'observation_type': <astro_metadata_translator.properties.PropertyDefinition object>, 'observing_day': <astro_metadata_translator.properties.PropertyDefinition object>, 'observing_day_offset': <astro_metadata_translator.properties.PropertyDefinition object>, 'physical_filter': <astro_metadata_translator.properties.PropertyDefinition object>, 'pressure': <astro_metadata_translator.properties.PropertyDefinition object>, 'relative_humidity': <astro_metadata_translator.properties.PropertyDefinition object>, 'science_program': <astro_metadata_translator.properties.PropertyDefinition object>, 'telescope': <astro_metadata_translator.properties.PropertyDefinition object>, 'temperature': <astro_metadata_translator.properties.PropertyDefinition object>, 'tracking_radec': <astro_metadata_translator.properties.PropertyDefinition object>, 'visit_id': <astro_metadata_translator.properties.PropertyDefinition object>}

All the valid properties for this translator including extensions.

cameraPolicyFile = 'policy/comCam.yaml'

Path to policy file relative to obs_lsst root.

detectorMapping = None

Mapping of detector name to detector number and serial.

detectorSerials = None

Mapping of detector serial number to raft, number, and name.

name: str | None = 'LSSTComCam'

Name of this translation class

Methods Documentation

classmethod can_translate(header, filename=None)

Indicate whether this translation class can translate the supplied header.

Looks for “COMCAM” instrument in case-insensitive manner but must be on LSST telescope. This avoids confusion with other telescopes using commissioning cameras.

Parameters

headerdict-like

Header to convert to standardized form.

filenamestr, optional

Name of file being translated.

Returns

canbool

True if the header is recognized by this class. False otherwise.

classmethod fix_header(header, instrument, obsid, filename=None)

Fix ComCam headers.

Notes

Fixes the following issues:

• If ComCam was in Chile, the FILTER is always empty (or unknown).

• If LSST_NUM is missing it is filled in by looking at the CCDSLOT value and assuming that the ComCam detectors are fixed.

• If ROTPA is missing or non-numeric, it is set to 0.0.

Corrections are reported as debug level log messages.

See fix_header for details of the general process.

to_instrument() → str

The instrument used to observe the exposure.

Returns:

Translated property that is fixed to a single value by the translator.

Return type:

str