adapt_900 adaptively smooths background subtracted and exposure corrected images. For each unmasked pixel, the program will average neighboring pixels within a circle of increasing radius until a selected number of counts is reached. The original pixel is then given the average surface brightness for the pixels within the circle. Binning by 2 or 4 can also be selected.
Warning and requirements: adapt_900 is part of the esas package integrated into SAS, but is limited to work within esas data reduction scheme. This is specially true wrt the structure and names of the input files. In particular, adapt_900 assumes that other tasks from the package, like mos-spectra, mos-back, and if desired comb must have been successfully run for the exposures to be used.