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| IFA ROE |
Introduction to extracting images
Given a free format Right Ascension (RA) & Declination (Dec) (eg 00 05 53.9 -34 45 08), equinox (B1950 or J2000), the size of square to extract (less than 15 arcmin) and the waveband/Schmidt survey required the web-form, Get an Image, returns a gzipped FITS format image of the SuperCOSMOS scan. If you do not have software that can view FITS images then you should also choose to generate the GIF image.Users unfamiliar with RA and Dec might like to look at the examples page, which lists coordinates of some interesting objects and describes the format for entering RA and Dec.
The FITS image has 0.7 arcsec pixels and a built-in World Coordinate System (WCS). Also Included in the FITS file are two FITS tables cataloging the objects found in the requested area (as determined by the SuperCOSMOS Image Analysis Mode (IAM)).
Also returned is a tab-separated object listing that can be read together with the FITS image into the GAIA software.
For the form to successfully return data the required survey plate must have been measured and put on-line. Some plates have not yet be taken and/or scanned. A summary of scans available on-line is given under Sky coverage.
A beginners guide to using to the image extraction form and accessing the data with GAIA is given here.
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