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II/230              TASS Mark III photometric survey         (Richmond+, 2000)

TASS Mark III photometric survey of the celestial equator Richmond M.W., Droege T.F., Gombert G., Gutzwiller M., Henden A.A., Albertson C., Beser N., Molhant N., Johnson H. <Publ. Astron. Soc. Pac. 112, 397 (2000)> =2000PASP..112..397R
ADC_Keywords: Surveys ; Photometry, CCD ; Photometry, VRI Abstract: The Amateur Sky Survey (TASS) is a loose confederation of amateur and professional astronomers. We describe the design and construction of our Mark III system, a set of wide-field drift-scan CCD cameras which monitor the celestial equator down to 13th magnitude in several passbands. We explain the methods by which images are gathered, processed, and reduced into lists of stellar positions and magnitudes. Over the period 1996 October to 1998 November, we compiled a large database of photometric measurements. One of our results is the tenxcat catalog, which contains measurements on the standard Johnson-Cousins system for 367,241 stars; it contains links to the light curves of these stars as well. File Summary:
FileName Lrecl Records Explanations
ReadMe 80 . This file catalog.dat 132 367241 TASS tenxcat catalog
See also: http://stupendous.rit.edu/tass/tass.shtml : the TASS home page I/263 : ACR catalog around Celestial Equator (Stone+, 1999) II/183 : UBVRI Photometric Standards (Landolt 1992) II/125 : IRAS catalogue of Point Sources, Version 2.0 (IPAC 1986) III/135 : Henry Draper Catalogue and Extension (Cannon+ 1918-1924; ADC 1989) I/247 : The AC2000 Catalogue (Urban+ 1997) Byte-by-byte Description of file: catalog.dat
Bytes Format Units Label Explanations
1- 15 A15 --- Name Identification of star in the Mark III database (1) 17- 24 F8.4 deg RAdeg Right ascension of the star (J2000) 26- 33 F8.4 deg DEdeg Declination of the star (J2000) 35- 40 F6.3 mag Vmag ? Mean V-band magnitude of the star (2) 43- 47 F5.3 mag e_Vmag ? rms uncertainty on Vmag (3) 50- 51 I2 --- o_Vmag Number of measurements in the V-band 53- 58 F6.3 mag Rmag ? Mean R-band magnitude of the star (2) 61- 65 F5.3 mag e_Rmag ? rms uncertainty on Rmag (3) 68- 69 I2 --- o_Rmag Number of measurements in the R-band 71- 76 F6.3 mag Imag ? Mean I-band magnitude of the star (2) 79- 83 F5.3 mag e_Imag ? rms uncertainty on Imag (3) 86- 87 I2 --- o_Imag Number of measurements in the I-band 89 I1 --- flag1 [0/1] Raw flag indicator (4) 91 I1 --- flag2 [0/1] Flag for merged spurious pairs (5) 93 I1 --- flag3 [0/1] Flag for merged spurious pairs (5) 95 I1 --- --- [0] Not currently used. 97 I1 --- --- [0] Not currently used. 99 I1 --- --- [0] Not currently used. 102-108 I7 --- AC2000 ? ID of the matching star in the Astrographic Catalogue 2000, Cat. I/247 110-115 I6 --- HD ? ID of the matching star in the HD Catalogue Cat. III/135 118-120 A3 --- SpType Spectral type of the star, from HD catalogue 122-132 A11 --- IRAS Name of a matching source in the IRAS PSC Cat. II/125
Note (1): This name is usually the ID of the star in the GSC version 1.1 (Cat. I/220) when starting by GSC. If there is no matching GSC star, a name based on J2000 position is supplied; in order to make this last name into a real IAU designation, one must add the prefix "TASS J", for example, TASS J023553.2-020325 Note (2): This is the unweighted average of all valid magnitude measurements of the star in the passband. Note (3): the mean error is blank for a star with just 1 magnitude datum. Note (4): if this flag is 1, his star's magnitude values are not corrected for color terms (usually because it was not observed in both V and I). If this flag is 0, the star's magnitude has been corrected for color terms. Note (5): "spurious pairs" are non-existing pairs. The pixel size of the Mark III images being about 14arcsec, detections which fall within 15 arcsec of an existing entry should be merged in the database. flag2 is set to 1 when multiple entries of such "spurious pairs" were effectively merged. flag3 is set to 1 when multiple entries of such "spurious pairs" could not be merged. The other member of the pair must also appear in the catalog, and its entry will also have its flag3 set to 1.
Acknowledgements: It is a pleasure to thank Michael Richmond, who gave an access to the tenxcat catalogue. History: * Copied at http://www.tass-survey.org/tass/technotes/tn0056.html in April 2000
(End) James Marcout, Patricia Bauer, Francois Ochsenbein [CDS] 22-Jun-2000
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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