HyperSuprimeCam

The HyperSuprimeCam (HSC) Schema describes the outputs of the latest data release production pipelines for HyperSuprimeCam. It is used in the CI testing of the pipelines.

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Parent

Descriptions of the parent objects in the deblending hierarchy.

Indexes

Columns	Description	Reference Name
objectId	Unique index on objectId column	idx_Parent_objectId

Column Name	Data Type	Unit	Description	UCD	Order	Principal

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Object

The Object table contains descriptions of the multi-epoch static astronomical objects, in particular their astrophysical properties as derived from analysis of the Sources that are associated with them. Note that fast moving objects are kept in the MovingObject tables. Note that less-frequently used columns are stored in a separate table called Object_Extra.

Column Name	Data Type	Unit	Description	UCD	Order	Principal

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Source

Table to store high signal-to-noise sources;. A source is a measurement of Object's properties from a single image that contains its footprint on the sky.

Column Name	Data Type	Unit	Description	UCD	Order	Principal
localPhotoCalib	double		Local approximation of the PhotoCalib calibration factor at the location of the src.
localPhotoCalib_flag	boolean		Set for any fatal failure
localPhotoCalibErr	double		Error on the local approximation of the PhotoCalib calibration factor at the location of the src.
localWcs_flag	boolean		Set for any fatal failure
localWcs_CDMatrix_2_1	double		(2, 1) element of the CDMatrix for the linear approximation of the WCS at the src location. Gives units in radians.
localWcs_CDMatrix_1_1	double		(1, 1) element of the CDMatrix for the linear approximation of the WCS at the src location. Gives units in radians.
localWcs_CDMatrix_1_2	double		(1, 2) element of the CDMatrix for the linear approximation of the WCS at the src location. Gives units in radians.
localWcs_CDMatrix_2_2	double		(2, 2) element of the CDMatrix for the linear approximation of the WCS at the src location. Gives units in radians.

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Visit

Defines a single Visit.

Column Name	Data Type	Unit	Description	UCD	Order	Principal
decl	double	deg	Deprecated duplicate of dec.
midpoint	timestamp		Midpoint time of the visit at the fiducial center of the focal plane array. TAI, accurate to 10ms.
midpointMjdTai	double	d	Midpoint time of the visit at the fiducial center of the focal plane array, expressed as Modified Julian Date, International Atomic Time, accurate to 10ms.
obsStartMjdTai	double		Start of the visit, expressed as Modified Julian Date, International Atomic Time, accurate to 10ms.

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VisitDetector

Defines a single detector of a visit

Column Name	Data Type	Unit	Description	UCD	Order	Principal
decl	double	deg	Deprecated duplicate of dec.
midpoint	timestamp		Midpoint of this visit. TAI, accurate to 10ms.
midpointMjdTai	double	d	Midpoint of this visit, expressed as Modified Julian Date, International Atomic Time, accurate to 10ms.
obsStartMjdTai	double		Start of the visit, expressed as Modified Julian Date, International Atomic Time, accurate to 10ms.

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SDM Schemas is maintained by Rubin Observatory.