| WEBGET | Use the IDL SOCKET procedure to get data from http servers |
| QUERYGSC | Query the Guide Star Catalog (GSC V2.3.2) at STScI by position |
| QUERYDSS | Query the digital sky survey (DSS) online at the ESO or STSCI servers |
| QUERYSIMBAD | Query the SIMBAD or NED name resolver to obtain J2000 coordinates |
| QUERYVIZIER | Positional query of any catalog in the VIZIER database. |