a2152.gif Abell 2152 R-band image (4'x4' field of view)
a2152_color.tif: Color image of Abell 2152 (2-band B-R composite, 5.6'x5.6' FOV)
JPEG color images with harder stretches (sharper contrast), better for
8-bit color:
a2152_3.jpg: Color image of Abell 2152, harder stretch
a2152_4.jpg: Color image of Abell 2152, even harder
Photometric redshifts by eye . . .
From the above color images, it's pretty easy to pick out
which early-type galaxies are in the foreground cluster (the whitish ones)
and therefore at z=0.04, and which are in the background cluster
(the orangish ones) and therefore at z=0.13. The relative K-correction
is nearly 0.4 mag for (B-R) color between these two redshifts.
Note, however that the strongly lensed object discussed in the
lensing paper (AJ, January 2001),
25 arcsec north of the A2152 central galaxy is in the background
cluster (probably) but is intrinsically blue and not early-type,
so appears more white in the images.
