ACS Mosaic Information

The ACS v1.2 mosaic was created by Anton Koekemoer at STScI, using cycle 12+13 data. The README has further information on the ACS mosaic. The mosaic as a single file, is a 100,800 x 100,800 pixel FITS image, which is 81GB in size. Since this file is over 2GB is size (unix 32bit "large file" limit), the full-resolution mosaic cannot be downloaded in its entirety via HTTP. Instead, you can download one of the scaled-down images listed below, or download the mosaic as a set of 49 tile FITS images, which can be found here and are described in more detail in the table below.

FTP the entire ACS Mosaic:

The entire 81GB mosaic FITS file is available for download using ftp. Please follow the instructions below to get this file:

     > ftp irsa.ipac.caltech.edu
     [use username "anonymous" to log in, and your email as the password]
     > cd /work/COSMOS
     > binary
     > get mos_v1.2_cyc12+13_100800pix_drz.fits
     > bye
Please note that the download can take many hours, depending on your ethernet speed (this file is 81GB).

Scaled-down ACS Mosaics:

ACS Mosaic Tiles:

Click on the tile number to download each FITS (gzip format) image slice of the mosaic. Each file is under 2GB in size when unzipped (144,000 pixels square). North is "up" on image below.

7_1 7_2 7_3 7_4 7_5 7_6 7_7
6_1 6_2 6_3 6_4 6_5 6_6 6_7
5_1 5_2 5_3 5_4 5_5 5_6 5_7
4_1 4_2 4_3 4_4 4_5 4_6 4_7
3_1 3_2 3_3 3_4 3_5 3_6 3_7
2_1 2_2 2_3 2_4 2_5 2_6 2_7
1_1 1_2 1_3 1_4 1_5 1_6 1_7