This directory contains gzipped versions of the MSX Point Source Catalog, version 1.0. A draft copy of the explanatory guide for the catalog is contained in the color PDF format file "MSX_psc_es.pdf". The data are contained in the six files, which divide the catalog by location on the sky. The non-plane.cat file contains the IRAS gap catalog, while the remaining 5 files contain the Galactic plane data. The files contain flux densities in Janskys, divided into galactic latitude bins. These are: non-plane = outside of +/- 6 deg b (CB01 + CB04 scans) gp_p2_p6 = +2 < b <= +6 gp_pm2_pm6 = -2 > b >= -6 gp_p05_p2 = +0.5 < b <= +2 gp_pm05_pm2 = -0.5 > b >= -2 gp_pm05_p05 = |b| <= 0.5 This readme file contains a description of the catalog record format. Any questions regarding the catalog can be directed to: Dr. Michael Egan Air Force Research Laboratory/VSBC 29 Randolph Rd. Hanscom AFB, MA 01731-3010 e-mail: egan@plh.af.mil phone: 781-377-3188 fax: 781-377-3138 The FORTRAN format used to write the catalog is : 2002 format(a23,1x,f9.4,1x,f9.4, & 2(1x,f4.1),1x,f5.1,1x,i3,6(1x,1pe12.4,1x,i1,1x,0pf5.1,1x,f6.1,1x, & f6.1,1x,i3,1x,f5.1),1x,6i1,1x,6i1,1x,6i1) For v1.1, each band now has an additional quality flag. This has been added for the benefit of the IPAC database, and ease in writing queries. The flag takes on values from 0 to 4, where the flags are assigned such that: ND 0 = not detected in this band limit 1 = # detections = 1, SNR < 6 or # detections = 2, SNR_low < 3.5 fair 2 = # detections in band = 1, SNR > 6 or # detections in band = 2, SNR_high < 4 and SNR_low > 3.5 or # detections in band >= 3, SNR_high < 3 good 3 = # detections in band = 2, SNR_high >= 4 or # detections in band >= 3, SNR_low < 4 but SNR_high >= 3 excellent 4 = # detections in band >= 3, SNR_low >= 4 To be included in the catalog, at least on band had to have a detection at the 2 quality level. I have allowed single detections of SNR > 6 to be included as non-limit detections because of their frequent occurance in the B-bands, given that it was a 2-pass rather than 4-pass survey. The columns are: name (MSX5C_GLLL.llll+BB.bbbb) RA (J2000 decimal degrees) dec (J2000 decimal degrees) 1-sigma in-scan position uncertainty (arcseconds) 1-sigma cross-scan position uncertainty (arcseconds) in-scan ange East of North (degrees) number of total scan sightings Band B1 flux density (Jy, negative value of sensitivity limit if number of sightings = 0) Band B1 quality flag (4 = excellent, 3 = good, 2 = fair, 1 = limit, 0 = not detected) Band B1 flux uncertainty 1-sigma (%) Band B1 lowest SNR detection Band B1 highest SNR detection number of sightings in Band B1 Variation in Band B1 measurements (dimensionless) Band B2 flux density (Jy in *.cat) Band B2 quality flag Band B2 flux uncertainty 1-sigma (%) Band B2 lowest SNR detection Band B2 highest SNR detection number of sightings in Band B2 Variation in Band B2 measurements (dimensionless) Band A flux density (Jy in *.cat) Band A quality flag Band A flux uncertainty 1-sigma (%) Band A lowest SNR detection Band A highest SNR detection number of sightings in Band A Variation in Band A measurements (dimensionless) Band C flux density (Jy in *.cat) Band C quality flag Band C flux uncertainty 1-sigma (%) Band C lowest SNR detection Band C highest SNR detection number of sightings in Band C Variation in Band C measurements (dimensionless) Band D flux density (Jy in *.cat) Band D quality flag Band D flux uncertainty 1-sigma (%) Band D lowest SNR detection Band D highest SNR detection number of sightings in Band D Variation in Band D measurements (dimensionless) Band E flux density (Jy in *.cat) Band E quality flag Band E flux uncertainty 1-sigma (%) Band E lowest SNR detection Band E highest SNR detection number of sightings in Band E Variation in Band E measurements (dimensionless) variability flag (B1B2ACDE, 0=variation < 3-sigma, 1=var > 3sigma) confusion flag (B1B2ACDE, 0=not confused, 1=possible confusion problem) flux quality flag (B1B2ACDE, two components, SNR and fit quality, such that ifqual = ipsf + isnr where: ipsf = 0 for all measurements good fit to PSF, 1=some measurements good, 2=all measurements poor fit to PSF isnr = 0 for all SNR > 3, 3 if lowest SNR < 3, 6 if all SNR in band < 3. This combination fills values 0 - 8 uniquely. ifqual = 9 =not detected in band)