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V/107               MSX5C Infrared Point Source Catalog     (Egan+ 1999)

The Midcourse Space Experiment Point Source Catalog, Version 1.2 (June 1999) Egan M.P., Price S.D., Moshir M.M., Cohen M., Tedesco E., Murdock T.L., Zweil A., Burdick S., Bonito N., Gugliotti G.M., Duszlak J. <Air Force Research Lab. Technical Rep. AFRL-VS-TR-1999-1522 (1999)>
ADC_Keywords: Infrared sources ; Photometry, infrared; Surveys Mission_Name: MSX Description: The principal objective of the astronomy experiments abroad the Midcourse Space Experiment (MSX) was to complete the census of the mid-infrared (4.2-25µm) sky: the areas missed by the IRAS mission (about 4% of the sky was not surveyed by IRAS), and the Galactic Plane where the sensitivity of IRAS was degraded by confusion noise in the regions of high source densities or structured extended emission. The infrared instrument on MSX is named SPIRIT III; it is a 35cm clear aperture off-axis telescope with five line scanned infrared focal plane arrays of 18.3arcsec square pixels, with a high sensitivity (0.1Jy at 8.3µm). The characteristics of the 6 bands B1, B2, A, C, D and E are summarized in the "Note (1)" below. The data are contained in 7 files according to the location on the sky: 5 are related to the Galactic Plane, one (non-plane) contains the IRAS gap catalog, the the lmc.dat file contains the observations of the Large Magellanic Cloud. File Summary:
FileName Lrecl Records Explanations
ReadMe 80 . This file gp_m2m6.dat 354 73376 Galactic plane, -6. ≤ b < -2 gp_m05m2.dat 354 63623 Galactic plane, -2. ≤ b < -0.5 gp_pm05.dat 354 55385 Galactic plane, |b|≤ 0.5 gp_p05p2.dat 354 65769 Galactic plane, 0.5< b ≤ 2 gp_p2p6.dat 354 64899 Galactic plane, 2. < b ≤ 6 nonplane.dat 354 6260 IRAS Gaps lmc.dat 354 1806 Large Magellanic Cloud
See also: http://www.ipac.caltech.edu/ipac/msx/msx.html : MSX page http://gibbs1.plh.af.mil/Results/AAS191/Price/price.html : SPIRIT III results V/98 : MSX Infrared Astrometric Catalog (Egan+ 1996) II/125 : IRAS catalogue of Point Sources, Version 2.0 (IPAC 1986) II/126 : IRAS Serendipitous Survey Catalog (Kleinmann+ 1986) II/156 : IRAS Faint Source Catalog, |b| > 10, Version 2.0 (Moshir+ 1989) II/209 : Catalog of Infrared observations, Edition 3.5 (Gezari+ 1996) Byte-by-byte Description of file: *.dat
Bytes Format Units Label Explanations
1- 6 A6 --- --- MSX5C_ 7- 23 A17 --- MSX5C Name (based on galactic position) 26- 33 F8.4 deg RAdeg Right Ascension J2000 36- 43 F8.4 deg DEdeg Declination J2000 45- 48 F4.1 arcsec ePos 1-sigma in-scan position uncertainty 50- 53 F4.1 arcsec xPos 1-sigma cross-scan position uncertainty 55- 59 F5.1 deg posPA in-scan position angle East of North 61- 63 I3 --- Nscan Number of total scan sightings 65- 76 E12.4 Jy B1 Flux density in B1 band (1) 78 I1 --- q_B1 [0,4] Band B1 quality (2) 80- 84 F5.1 % e_B1 ?=-99.0 flux uncertainty 1-sigma (%) 86- 91 F6.1 --- B1SNl Band B1 lowest SNR detection 93- 98 F6.1 --- B1SNh Band B1 highest SNR detection 100-102 I3 --- o_B1 Number of sightings in Band B1 104-108 F5.1 --- B1var Variation in Band B1 measurements 110-121 E12.4 Jy B2 Flux density in B2 band (1) 123 I1 --- q_B2 [0,4] Band B2 quality (2) 125-129 F5.1 % e_B2 ?=-99.0 flux uncertainty 1-sigma (%) 131-136 F6.1 --- B2SNl Band B2 lowest SNR detection 138-143 F6.1 --- B2SNh Band B2 highest SNR detection 145-147 I3 --- o_B2 Number of sightings in Band B2 149-153 F5.1 --- B2var Variation in Band B2 measurements 155-166 E12.4 Jy A Flux density in A band (1) 168 I1 --- q_A [0,4] Band A quality (2) 170-174 F5.1 % e_A ?=-99.0 flux uncertainty 1-sigma (%) 176-181 F6.1 --- ASNl Band A lowest SNR detection 183-188 F6.1 --- ASNh Band A highest SNR detection 190-192 I3 --- o_A Number of sightings in Band A 194-198 F5.1 --- Avar Variation in Band A measurements 200-211 E12.4 Jy C Flux density in C band (1) 213 I1 --- q_C [0,4] Band C quality (2) 215-219 F5.1 % e_C ?=-99.0 flux uncertainty 1-sigma (%) 221-226 F6.1 --- CSNl Band C lowest SNR detection 228-233 F6.1 --- CSNh Band C highest SNR detection 235-237 I3 --- o_C Number of sightings in Band C 239-243 F5.1 --- Cvar Variation in Band C measurements 245-256 E12.4 Jy D Flux density in D band (1) 258 I1 --- q_D [0,4] Band D quality (2) 260-264 F5.1 % e_D ?=-99.0 flux uncertainty 1-sigma (%) 266-271 F6.1 --- DSNl Band D lowest SNR detection 273-278 F6.1 --- DSNh Band D highest SNR detection 280-282 I3 --- o_D Number of sightings in Band D 284-288 F5.1 --- Dvar Variation in Band D measurements 290-301 E12.4 Jy E Flux density in E band (1) 303 I1 --- q_E [0,4] Band E quality (2) 305-309 F5.1 % e_E ?=-99.0 flux uncertainty 1-sigma (%) 311-316 F6.1 --- ESNl Band E lowest SNR detection 318-323 F6.1 --- ESNh Band E highest SNR detection 325-327 I3 --- o_E Number of sightings in Band E 329-333 F5.1 --- Evar Variation in Band E measurements 335 I1 --- varB1 [0,1] Band B1 variability flag (3) 336 I1 --- varB2 [0,1] Band B2 variability flag (3) 337 I1 --- varA [0,1] Band A variability flag (3) 338 I1 --- varC [0,1] Band C variability flag (3) 339 I1 --- varD [0,1] Band D variability flag (3) 340 I1 --- varE [0,1] Band E variability flag (3) 342 I1 --- confB1 Band B1 number of confused sources 343 I1 --- confB2 Band B2 number of confused sources 344 I1 --- confA Band A number of confused sources 345 I1 --- confC Band C number of confused sources 346 I1 --- confD Band D number of confused sources 347 I1 --- confE Band E number of confused sources 349 I1 --- relB1 Band B1 measurement reliability flag (4) 350 I1 --- relB2 Band B2 measurement reliability flag (4) 351 I1 --- relA Band A measurement reliability flag (4) 352 I1 --- relC Band C measurement reliability flag (4) 353 I1 --- relD Band D measurement reliability flag (4) 354 I1 --- relE Band E measurement reliability flag (4)
Note (1): fluxes in the infrared bands: The filter characteristics are (wavelengths in µm): ---------------------------- Band Center FWHM Points ---------------------------- B1 4.29 4.22 - 4.36 B2 4.25 4.24 - 4.45 A 8.28 6.8 - 10.8 C 12.13 11.1 - 13.2 D 14.65 13.5 - 15.9 E 21.34 18.2 - 25.1 ---------------------------- When the number of sight seeings is zero, the fluxes are set to the negative value of the sensitivity limit. Note (2): The Quality flags in each band are: 4 = excellent, detections≥3, SNRlow ≥4 3 = good, detections= 2, SNRhigh≥4 or detections≥3, SNRlow <4 but SNRhigh≥3 2 = fair, detections≥3, SNRhigh<3 or detections= 2, SNRhigh<4 and SNRlow > 3.5 or detections= 1, SNR>6 1 = limit, detections= 2, SNRlow <3.5 or detections= 1, SNR< 6 0 = not detected Note (3): the flag is set to 1 when the variation of the measurements over the mission exceeds the 3σ limit. Note (4): a value of 0 means that the measurements fit the point source function and that all measurements were of adequate signal-to-noise. A value fo R=9 is assigned when the source is not detected in the band.
History: The files, dated October 1999, were copied in February 2001 from ftp://spider.ipac.caltech.edu/pub/irsa_ftp/catalogs In file lmc.dat, an "infinity" value for the ASNh parameter (highest S/N detection in the A band) was changed to 9999.9 (record#187)
(End) Francois Ochsenbein [CDS] 17-May-2001
The document above follows the rules of the Standard Description for Astronomical Catalogues.From this documentation it is possible to generate f77 program to load files into arrays or line by line

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