Other photometric observations (detections)
Due to overlaps in imaging stripes, the SDSS sometimes observes the same
object more than once. In such cases, we select one observation as PRIMARY (mode=1). Each
astronomical object is assigned a thingID, and each time that "thing" is observed (detected
in SDSS imaging), it assigned a separate objID.
Information about each astronomical "thing" is stored in the
thingIndex
table; thingIndex is a thin coupling table designed only to connect repeat observations.
Information about each individual observation (detection) is in the
photoObjAll table. (Note that
photoObj contains only the primary [mode=1] and secondary [mode=2] observations of each "thing.")
The detectionIndex table connects each objID to the thingID it corresponds with.
This detected object and its associated "Thing" (Primary observation)
|
IAU name | objid | thingid | mode description | SDSS J081658.54+414723.6 | 1237673704507441497 | 444497675 | PRIMARY |
Other Observations of this "Thing"
objid | thingid | mode | mode description | 1237673704507441497 | 444497675 | 1 | PRIMARY | 1237653612104253693 | 444497675 | 2 | SECONDARY | 1237654329366610207 | 444497675 | 2 | SECONDARY | 1237654355136545138 | 444497675 | 2 | SECONDARY | 1237654389494186286 | 444497675 | 2 | SECONDARY | 1237654628402594129 | 444497675 | 2 | SECONDARY | 1237654667050811679 | 444497675 | 2 | SECONDARY | 1237655109433950526 | 444497675 | 2 | SECONDARY |
|