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 J002426.24-004330.4123766378312630358377805485PRIMARY

Other Observations of this "Thing"

objidthingidmodemode description
1237663783126303583778054851PRIMARY
1237667171855041426778054852SECONDARY
1237678433253654725778054852SECONDARY
1237646010548945301778054852SECONDARY
1237653011365429405778054852SECONDARY
1237659754446520463778054852SECONDARY
1237659904786956679778054852SECONDARY
1237660025043288679778054852SECONDARY
1237660222614012117778054852SECONDARY
1237660355750068367778054852SECONDARY
1237663276319834284778054852SECONDARY
1237663478199419035778054852SECONDARY
1237663525447270745778054852SECONDARY
1237663714406368051778054852SECONDARY