Crowded field photometry using EFOSC and ROMAFOT.

Details Crowded field photometry using EFOSC and ROMAFOT. Crowded field photometry using EFOSC and ROMAFOT.

Mar 1987

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1987msngr..47...24m&link_type=abstract

The Messenger, vol. 47, p. 24-25

Physics

Methods Of Reduction:Photometry, Photometry:Methods Of Reduction

Scientific paper

The ESO Faint Object Spectrograph and Camera (EFOSC), instrument of the ESO 3.6-m telescope, can be used as a very efficient CCO camera for wideband photometry of crowded stellar fields. EFOSC was designed to match the RCA SIO 501 EX CCO (320 x 512 pixels, 30 x 30 microns pixel size). Each pixel corresponds to 0.675 arcsec and the total field of view is 3.6 x 4.7 arcminutes (1). Using the instrument in direct imaging mode, the limiting magnitude of a 15 minute exposure with seeing of FWHM = 1.3 arcseconds in the V band is about 25.5 for a signal-to-noise ratio of 3 (2).

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