. XMM-Newton Science Analysis System . omsrclistcomb (omsrclistcomb-2.11.4) [xmmsas_20080701_1801-8.0.0] . Meta Index / Home Page / The SRCLIST table For each filter there is a column for the source corrected count-rates. These values are the averaged, without weighting , values from the individual sources that were merged into a source. These rates have had all the necessary corrections applied. Again note that sources with negative significance values are ignored. XMM-Newton SOC/SSC -- 2008-07-02

In this section we present plots which may be used to rapidly estimate signal-to-noise ratio (SNR) for point sources with stellar spectra observed through popular WFPC2 filters. ... One uses these plots as follows: . ... Dotted lines across the top of each plot indicate the onset of saturation. ... We look at Figure B.10 and find this value on the horizontal axis. ... This exposure is well below the saturation lines in the plot, so saturation is not a concern. ... 0.45 Figure B.1: Point Source SNR vs. ...

... Next: The PROS Big Up: Software Systems Previous: Data Reduction Software . ... The srcinten task provides PROS users with a tool to compute count rates for point sources in the ROSAT High Resolution Imager (HRI). ... Corrected upper limits are cited at locations where the count rate falls below the source detection threshold. ... Srcinten is a new PROS task that computes and applies the above correction factors to the net counts in a user-specified aperture. ...

HI source finding: 2 novel approaches ATNF, December 2010 Outline · Background · What is source finding? ... Motivation for developing new HI source finding methods · Novel source finding methods · · · · General idea Iterative 3-D median smoothing Characterised noise method Wavelet method · Summary Background What is source finding? ... 3-D median smoothing: Purpose · Goal: Reduce noise while preserving shape · Particularly edges · Median works because it's non-linear · Consider this, Iter. ...

... 371Gregory Taylor . ... We persent a catalog of 1274 discrete sources detected during a 5 yr, 6 cm, radio-patrol survey of the galactic plane for variavle sources. ... Seventy-five percent of the sources are weaker than 75 mJy, and as a consequence reliable sources and 27 possible variables were detected, of which 64 % exhibited shirt-term variability. ... A comparison with previous centimeter variability studies suggests the possible existence of two distinnct variability components. ...

... ChaMP internal optical source ID . ... Then for each detected filter (g,r,i) we list the SExtractor outputs (see Bertin, E., & Arnouts, S. 1996 A 117, 393 ). ... FLAGS . ... SExtractor flags: . ... The object has neighbors, bright and close enough to significantly bias the photometry, or bad pixels (more than 10% of the integrated area affected). ... At least one pixel of the object is saturated (or very close to). ... Object's aperture data are incomplete or corrupted. ... Images & Data | ...