The ACS Intermediate Redshift Cluster Survey is a study of about eight clusters in the redshift range z=0.8 to z=1.3 using the Wide Field Channel of the Advanced Camera for Surveys on the Hubble Space Telescope.

    click here for PDF  z083apj.pdf
    click here for gzip'ed PS  z083apj.ps.gz

A recent view of our program by Ford et al:  ford_clusters.pdf.

The first paper from this survey Advanced Camera for Surveys Photometry of the Cluster RDCS 1252.9-2927: The Color-Magnitude Relation at z=1.24 has been published in the Astrophysical Journal Letters (Blakeslee et al. 2003 ApJ, 596, L143).
The text may be downloaded here in PDF or compressed PostScript format:
    cmrletter.pdf     cmrletter.ps.gz
Read more in the NASA/STScI press release on these data or in the ESA version of the release.

Some pictures of RDCS 1252.9-2927

cl1252_ctrNew_brite.jpg	The ACS iz color composite image from this paper.
cl1252ash998b.jpg	Larger ACS iz color composite image of central 1 arcmin.
cl1252izk_rect.jpg	A nice color composite using ACS i,z and VLT/ISAAC J+K.
cl1252_tn1338_big.jpg	Comparison to the protocluster around the radio z=4.1 galaxy TN1338 (see Miley et al. 2004, Nature).

Here's a color version of our color-magnitude relation from the paper:  cmr_color.gif