SkyServer: GLossary
 
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Target1. An object select as a candidate for spectroscopy.
2. The pipleine used to select candidates for spectroscopy. The procedures and various type of targets are described in the the Target algorithm page.
3.The database containing photometric measurements for objects at the time Target was run. If newer observations or improved calibration or software becomes available, the imaging data may be reprocessed, but not re-Targeted. The improved photometry is placed in the Best database.