DR12
Explore Home

Search

Imaging Summary
FITS
Finding chart (new window)
Other Observations
Neighbors
Galaxy Zoo
 
PhotoTag
Field
Frame
PhotoObj
PhotoZ

Cross-ID

Spec Summary
All Spectra

NED search
SIMBAD search
ADS search

Notes
Save in Notes
Show Notes

Print

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 nameobjidthingidmode description
SDSS J002855.68-010310.8123766378258995685468201237PRIMARY

Other Observations of this "Thing"

objidthingidmodemode description
1237663782589956854682012371PRIMARY
1237667171318694624682012372SECONDARY
1237646010012598709682012372SECONDARY
1237656850513134206682012372SECONDARY
1237659753910108689682012372SECONDARY
1237659904250544806682012372SECONDARY
1237660024506942105682012372SECONDARY
1237660222077600329682012372SECONDARY
1237660355213722152682012372SECONDARY
1237663275783422669682012372SECONDARY
1237663477663007262682012372SECONDARY
1237663524910858852682012372SECONDARY
1237663713870021364682012372SECONDARY