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SCIENCE ARCHIVE REQUIREMENTS

The science archive shall consist of a publicly accessible database of astrometrically and photometrically calibrated images and object catalogues along with housekeeping data. The science archive will contain all data from WFCAM (ie. the UKIDSS consortium surveys and data from PATT/non-PATT programmes). The science archive will thus consist of the following logically independent entities:

In addition to the independent archive of housekeeping data, such information pertinent to subsets of image/catalogue data will be stored with those data (in the form of header information). Housekeeping data will include generic Data Quality Control (DQC) measures including site information (conditions/weather), software versions, `release' versions (for calibrations etc.)

Data products extracted from the science archive shall be in FITS format (images; small object catalogues attached to images; very large object catalogues) and ASCII format (general object catalogues and housekeeping data). Catalogues shall additionally be available in Tab-separated List (TSL) format for compatibility with ESO-compliant browsers and remote server communication (Davenhall 2000).



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Next: Functional requirements Up: wfcpdr4 Previous: Hardware/software requirements
Nigel Hambly 2002-10-02