============================================================================ COSMOS UKIRT Data Version 1.0 ============================================================================ The Cosmic Evolution Survey (COSMOS) is an HST Treasury Project to survey a 2 square degree equatorial field, centered on RA=10:00:28.6 and DEC=+02:12:21.0, using the ACS camera. The project also incorporates major commitments from other observatories around the world, including the VLA radio telescope, ESO's VLT in Chile, ESA's XMM X-ray satellite, and the Japanese 8-meter Subaru telescope in Hawaii. These data represent 18 nights of imaging on UKIRT taken between December of 2005 and June of 2007 in J band with WF-CAM. These data are psf homogenized. The filter transmission profile is included in the file UKIRT_filter_J.txt. The key characteristics of these data are: Telescope: United Kingdom Infrared 3.8m Telescope Instrument: WF-CAM Effective Wavelength: 1.2um Filter Width: 0.16um Flux unit: nJy Zero Point 31.4 Area: ~4 sq degrees Resolution: 0.15"/pix Seeing: 1.74" PSF Homogenized: YES The data products available here include the following at each of 144 tiled positions: 1) an image in units of nJy 2) a map of the image RMS in units of nJy A tile diagram is included with the data. These data were reduced by Henry J. McCracken (hjmcc@iap.fr), Herve Aussel (herve.aussel@cea.fr), Peter Capak (capak@astro.caltech.edu) Dave Thompson (dthompson@as.arizona.edu) Mara Salvato (ms@astro.caltech.edu), and the TERAPIX team (terapix@iap.fr) Using IRAF with IRTOOLS and IMCAT, and the TERAPIX pipelines. Information on IRTOOLS can be obtained by e-mail from D. Thompson (dthompson@as.arizona.edu) Information on IMCAT can be found at: http://www.ifa.hawaii.edu/~kaiser/imcat/ SWarp v.2.16.4 and Terapix software from 2007-07-16 were used for the reduction. Information on Terapix can be found at: http://terapix.iap.fr/ These data were prepared for release by: Peter Capak (capak@astro.caltech.edu) Patrick Shopbell (pls@astro.caltech.edu) Further information may be obtained from the COSMOS web page: http://cosmos.astro.caltech.edu/ =========================================================================== June 06, 2008