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Survey data formats available
If you specify that you want to see a GIF image you
will see your piece of sky returned on the web page, but by default we
just return the files for you to use with your own software. The
images have 0.67 arcsec pixels and are returned in FITS format with a built-in
World Co-ordinate System (WCS). The FITS file automatically contains
FITS tables listing the associated object catalogues, and if your image
viewer is smart enough (like GAIA) you can browse them
simultaneously. However you can also download the catalogue separately.
The object catalogues can be returned either as FITS tables, ASCII
lists, or tab-separated lists. Various database query and analysis packages
(e.g. CURSA) can understand all of these formats. The parameters
returned include the obvious things like RA, Dec, l,b, magnitude, ellipticity
but also some less obvious but often useful things like image
area, quality and blend flags, and so on.
Home |
Intro |
Get an Image |
Get a
Catalogue
Coverage |
Documentation |
History |
Links
WFAU, Institute for Astronomy,
Royal Observatory, Blackford Hill
Edinburgh, EH9 3HJ, UK
M.Read@roe.ac.uk
30/7/2008
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