Abell 2218 gravitational lens
image scale = 1 arcsec per pixel
image scale = 0.36 arcsec per pixel
15 hours total exposure time; June-July, 2004
14.5" f/7.9
RCOS
Astro-Physics
QMD 900 mount
SBIG
ST-10e CCD with AO-7
return to images
image scale = 1 arcsec per pixel
image scale = 0.36 arcsec per pixel