In this paper we present a method to calibrate surface photometry of faint sources measured from direct photographic plates such as those of the NGS/POSS and ESO/SRC Sky Survey. This calibration ...
The PDS/Monet measuring engine at NOAO was used to obtain photometry of nearly 10 000 stars on the NGS/POSS and 2000 stars on the ESO/SRC Survey glass plates. These measurements have been used to show ...