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 J003246.55+004434.71237663204917772704113230132PRIMARY

Other Observations of this "Thing"

objidthingidmodemode description
12376632049177727041132301321PRIMARY
12376635442364424591132301322SECONDARY
12376637417877016351132301322SECONDARY
12376664991519873451132301322SECONDARY
12376666623821093641132301322SECONDARY
12376568526610113561132301322SECONDARY
12376568569464757351132301322SECONDARY
12376569085061371791132301322SECONDARY
12376573637628405341132301322SECONDARY
12376602371097891961132301322SECONDARY