This page describes the first data release from the UltraVISTA consortium, comprising images taken from September 2009 to April 2010 on the VISTA telescope. In this release we are making available Y,J,H and Ks images. Narrow-band data will follow in subsequent releases.

 READ FIRST this letter

 The release document describes in full these images and catalogues.

 Currently (until the images are uploaded to ESO and made publicly available sometime before the end of the summer) the stacks and catalogues are hosted at the TERAPIX ftp server, ftpix.iap.fr, username and password the same as for these pages. Direct links to the images hosted on the ftp site are given below.

Images	Weights
Y-stack	Y-weight
J-stack	J-weight
H-stack	H-weight
K-stack	K-weight