These plots are for all scans that have processed coadds that have magnitude thresholds for unconfused areas, which are 15.50, 14.75 and 14.25 mag for J, H and K, respectively.
The coadds were binned by expected noise from the background level, and median values of the excess coadd noise and excess background sigma were computed.
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http://spider.ipac.caltech.edu/staff/tchester/2mass/analysis/galaxies/backgrounds/low_density/excess_noise_vs_sky.html
Comments and feedback: Tom Chester
Last update: 15 October 1998.