I think you will find the following informative. Check .ps files in /data/L3/adam/detecttest/analysis. DETECTION EFFICIENCY "eff.ps" shows detection efficiency, i.e. how often an isolated source that was put in the simulation was in fact detected. There are two pages showing the same results: on the first page individual plots show the results for same strength sources, on the second page the individual plots show same simulation exposure times. Sources with N_evt of 30 and higher are always detected. Note that for those sources we only have 3ks and 100ks simulations (i.e. extreme cases). But given 100% success rate for 100ks (worst case), it makes no sense to do more of them. RESOLVING CLOSE SOURCES "res2.ps" and "res4.ps" show percentage of cases when two sources separated by 2 and 4 arcsec, respectively, were resolved. Important note: this is independent of whether anything was actually detected or not (but in almost all cases something was detected; note that for large off-axis angles this effectively becomes detection of "single" sources with twice the number of photons). We do not have many simulations for those cases, and some of the curves are rather wiggly. FALSE SOURCE RATE "fsr.ps" shows the number of false sources per simulation found by wavdetect in one arcmin annuli (keep in mind that the area covered by the annuli grows linearly). The x-range is shorter here than in other plots because for large off-axis angles the simulations show lots of false sources caused by detector edge effects, and I needed to exclude those. The top left panel includes absolutely everything, ie. even obviously bogus sources. In a quick attempt to weed out those bogus sources, I excluded sources with significance (as given by wavdetect) smaller than 3 (top right panel) and with net events smaller than 3*error (bottom right panel). The turnover around 6 arcmin off-axis is a result of the fact that this is where PSF really baloons and wavdetect (wrecon, to be precise) gets better in rejecting "sources" that really are local background fluctuations based on their size alone. AD, 12/12/2002