This table summarizes the history of GSC versions including the main sources of data for each version (see photographic surveys, catalogs, passbands).
There are various options to access each version -
- API - VO compliant webservice
- FITS - Entire catalog as a zip file containing a nested directory structure with a FITS file for each GSC2 region
- CDS - Also available from Centre de Données astronomiques de Strasbourg
| Catalog | Number of Objects | Description | Passbands | Notes | Release Date | Availability |
|---|---|---|---|---|---|---|
| GSC 1.0 | All-Sky 1st gen. photographic surveys prototype | Vpg, Jpg | 1990 | Internal only | ||
| GSC 1.1 | 25,253,151 | All-Sky 1st gen. photographic surveys + Tycho reference frame | Vpg, Jpg | 1992 | ||
| GSC 1.2 | 25,253,151 | All-Sky 1st gen. photographic surveys reprocessed | Vpg, Jpg | 1996 | ||
| GSC 2.2 | 455,851,237 | Partial sky 2nd gen. photographic surveys prototype | Vpg, Jpg, Fpg, Npg | 2001 | ||
| GSC 2.3.2 | 945,592,683 | All-sky 2nd gen. photographic surveys | Vpg, Jpg, Fpg, Npg | 2006 | ||
| GSC 2.3.4 | 1,020,503,745 | All-Sky Photographic surveys + 2MASS, Sky2000, Tycho2 | Opg, Jpg, Vpg, Fpg, Epg, Npg, B, V, J, H, Ks | 2006 | ||
GSC 2.4.0 | 945,443,930 | GSC 2.3.4 with GAIAdr1 astrometry | Opg, Jpg, Vpg, Fpg, Epg, Npg, B, V | 10/2017 | ||
| GSC 2.4.1 | 2,516,066,427 | GSC 2.3 + GAIAdr1+ SDSSdr13 + VHSdr2 + VSTdr3 | Opg, Jpg, Vpg, Fpg, Epg, Npg, G, B, V, u, g, r, i, z, Z, Y, J, H, Ks | 07/2018 | ||
| GSC 2.4.2 | 3,485,671,481 | GSC 2.4.1 + GAIAdr2 + PS1best + ALLWISE + SMSSdr1 + GALEX | Opg, Jpg, Vpg, Fpg, Epg, Npg, G, U, B, V, u, g, r, i, z, Z, Y, J, H, Ks, FUV, NUV, W1, W2, W3, W4 | 05/2020 | ||
| GSC 2.4.3 | 2,703,623,899 | GSC 2.4.0 + GAIAdr3 + PS1best + SDSSdr16 + SMSSdr2 + VHSdr5 | Opg, Jpg, Vpg, Fpg, Epg, Npg, G, Gbp, Grp, U, B, V, R, I, u, g, r, i, z, Z, Y, J, H, Ks | Current HST Ops | 09/2022 | |
| GSC 3.0 | 3,269,953,618 | GAIAdr3 + AtlasRefcat + 2MASS + PS1best(recalibrated) + SDSSdr16 + SMSSdr2 + VHSdr5 | Opg, Jpg, Vpg, Fpg, Epg, Npg, G, U, B, V, u, g, r, i, z, Z, Y, J, H, Ks | MAST Ops HST test Current JWST Ops ROMAN test | 0`1/2024 | |
| GSC 3.1 | GSC 3.0 + SMSSdr4 + NSCdr2 + VVV/VIRAC | Opg, Jpg, Vpg, Fpg, Epg, Npg, G, U, B, V, u, g, r, i, z, Z, Y, J, H, Ks | In planning | TBD |