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COSMOS Kitt Peak National Observatory (KPNO) Data               Version 3.0
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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 are imaging taken at the Kitt Peak National Observatory 
(KPNO).  

The key characteristics of these data are:

Telescope:		KPNO 4m Telescope
Instrument:		FLAMINGOS
Filter:			Ks
Flux unit:		nJy
Zero Point		31.4
Area:			4 sq degrees
Resolution:		0.15"/pix

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.

Images were combined by Peter Capak (capak@astro.caltech.edu) and Dave 
Thompson (djt@irastro.caltech.edu) using the IMCAT software package.
More information on IMCAT can be found at:

    http://www.ifa.hawaii.edu/~kaiser/imcat/

This data was 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/

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April 27, 2006