This page points to other documents, one per instrument, which describe each of the filenames associated with every HST observations. The calibration system in use produced a variety of files and their nomenclature is not necessarily standard across all instruments. So please consult the table below for a precise description of each files delivered by the HST archive system at CADC. Some of these descriptions are quite elementary but we are limited to the information available to us through each instrument handbooks.

In addition, the user have now access to all HST data from it's local computer using the CADC's programmatic interface (proxy). One little hurdle is that process is that the user MUST know the filename associated to a each specific observations. The CADC is stying to simplify those filenames and a list of the most important are available in each of the instrument (see the table below).

As one quick example, suppose you want to get a final drizzled ACS of the observation J8MJ95080, if you read the ACS document below, it will say that at CADC you will have to use the following sequence to get an ACS drizzle file and a 1D STIS spectrum:

curl -L -o j8mj95080_drz.fits.gz 'http://www.cadc.hia.nrc.gc.ca/getData?archive=HSTCA&file_id=J8MJ95080_DRZ'
curl -L -o o6d701030_x1d.fits 'http://www.cadc.hia.nrc.gc.ca/getData?archive=HSTCA&file_id=o6d701030_x1d'

The HST archive is splitted into 4 components at CADC. So we have "three" archives. In archive=HST, we have all the calibration files. In archive=HSTCA, we have all the regular HST files, raw and calibrated. This is the archive to use to get standard HST files. In archive=HLADR2 we stored all the HLA product files and in archive=WFPC2B, the WFPC2B associations. So please be careful when you want to use the direct access method as written above.

So please please consult these documents for each instrument: