BATC Data Release One - BATC DR1 (Zhou+ 1995-2005)

Details BATC Data Release One - BATC DR1 (Zhou+ 1995-2005) BATC Data Release One - BATC DR1 (Zhou+ 1995-2005)

Jul 2005

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2005ycat.2262....0x&link_type=abstract

VizieR On-line Data Catalog: II/262. Originally published in: National Astronomical Observatories of China (1995-2005)

Astronomy and Astrophysics

Astronomy

4

Colors, Galaxies: Photometry, Photometry: Special Systems

Scientific paper

Multi-color photometry data of the project, "Large Field Multi-Color Sky Survey" supported by Beijing-Arizona-Taiwan-Connecticut (BATC) is presented. From 1995 to 2004, 110 58'x58' sky survey fields have been observed. First release of BATC catalog includes observation results for 511842 sources located in 70 sky survey fields. The whole release is divided into 70 files. Each file corresponds to one observation field.
The BATC filter system includes 15 intermediate band filters, covering a range in optical wavelengths from 300 to 1000 nm. The telescope used is a 60/90 cm f/3 Schmidt telescope located at Xinglong Station of National Astronomical Observatories. A Ford Aerospace 2048x2048 CCD camera with 15 micron pixel size is mounted at the Schmidt focus of the telescope. The field of view of the CCD is 58'x58' with a plate scale of 1.7arcsec per pixel.
The BATC magnitude system adopts the AB magnitude system, defining as
Mbatc = -2.5log(Fν) - 48.60
where Fν is the flux per unit frequency in units of erg/s/cm2^/Hz, and
Fν={Sum}[d(logν)*fν*Rν]/{Sum}[d(logν)*Rν]
where Rν represents the response of the system. Four Oke & Gunn (1983ApJ...266..713O) standards, HD 19445, HD 84937, BD+26 2606 and BD+17 4708 are observed in photometric nights for flux calibration.
We provide catalogues down to i-band (666nm) about 20 mag with complete spectral energy distributions (SEDs) for each object. Typical error in photometry is about 0.02-0.05 mag.
There is usually the deepest observation at i-band. Most of the catalogs use i-band data as their reference for coordinate calibration. While, "T0329","TA01" and "TA03" use j-band as reference.
All colors in the "TA04" catalog have no photo calibration.
For detailed information of the data reduction, please refer to: Zhou, X., Jiang, Z., Ma, J., et al. 2003, 2003A&A...397..361Z
(3 data files).

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