Rolling the cursor over the image switches between a single epoch 3-color (J/H/Ks) image of the 90004 calibration field and an image constructed by combining approximately 1400 observations of the field. The combined images reach completeness limits of J<19.2, H<19.0 and Ks<18.2 mag. This is half of the available data covering this field.
Courtesy of Zeljko Ivezic (University of Washington)
[Last Updated: 2006 December 13]