Data for many fields were derived from various measurements from different sources or catalogs. This section summarizes the predefined codes for source data for all versions from GSC 2.4.1 onwards
Codes
Note that not all possible codes are used. For example, there is no 29.
| Source Code | Source | Description |
|---|---|---|
| 0 | Human | Manual |
| 1 | GSC1 | STScI DSS-1 plates |
| 2 | GSC2 | STScI DSS-2 plates |
| 3 | SkyMap | NASA Sky2000 catalog |
| 4 | USNO-B | USNO DSS-2 plates |
| 5 | UCAC | USNO CCD Astrograph catalog |
| 6 | URAT | USNO Robotic Astrometric Telescope catalog |
| 7 | PPMXL | Heidelberg re-reduction of USNOB/2MASS |
| 8 | IRAS | NASA Infrared Astronomical Satellite |
| 9 | 2MASS | Two Micron All Sky Survey |
| 10 | WISE | Wide-Field Infrared Survey Explorer |
| 11 | GALEX | Galaxy Evolution Explorer |
| 12 | ATLASrefcat2 | Asteroid Terrestrial-impact Last Alert System Reference Catalog |
| 13 | HIPPARCOS | ESA Mission |
| 14 | TYCHO | Astrometric Catalog using Star-mappers on Hipparcos mission |
| 15 | GAIA | ESA Mission |
| 16 | PS1 | Panoramic Survey Telescope and Rapid Response System (PanSTARRS) |
| 17 | SDSS | Sloan Digital Sky Survey |
| 18 | SMSS | SkyMapper Southern Survey |
| 19 | APASS | AAVSO Photometric All-Sky Survey |
| 20 | VISTA | Visible and Infrared Survey Telescope for Astronomy (ESO) |
| 21 | VISTA-VHS | Vista Hemisphere Survey |
| 22 | VISTA-UltraVISTA | VISTA deep imaging survey |
| 23 | VISTA-VIKING | VISTA Kilo-Degree Infrared Galaxy Survey |
| 24 | VISTA-VMC | VISTA Magellanic Survey |
| 25 | VISTA-VVV | VISTA Variables in the Via Lactea |
| 26 | VISTA-VIDEO | VISTA Deep Extragalactic Observations Survey |
| 27 | GNS | Galactic Nucleus Survey (VISTA) Catalog |
| 28 | NSC | NOIRLab Source Catalog |
| 30 | VST | VLT Survey Telescope (ESO) |
| 31 | VST-ATLAS | VST deep survey |
| 32 | VST-KIDS | The Kilo-Degree Survey |
| 33 | VST-VPAS | The VST Photometric H-alpha Survey of the Southern Galactic Plane |