Astronomy and Astrophysics – Astronomy
Scientific paper
May 2004
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2004aas...204.0604h&link_type=abstract
American Astronomical Society Meeting 204, #06.04; Bulletin of the American Astronomical Society, Vol. 36, p.743
Astronomy and Astrophysics
Astronomy
Scientific paper
The Hungarian-made Automated Telescope network (HATnet) is an ongoing project to detect transiting extra-solar planets using small aperture, robotic telescopes. In this poster we present the results from using image subtraction photometry to reduce a crowded stellar field (chosen to coincide with the planned field of the Kepler mission). We obtained I-band lightcurves for 98,000 objects in a 67-square-degree Field of View centered at (295.92, 37.54), along the galactic plane in the constellations Lyra and Cygnus. These observations include 800 5-minute exposures spanning a 30 day period. For the brightest stars (I 8.0) we achieved a precision of 3 millimagnitudes, falling to 0.04 magnitudes at the faint end (I 14.5). From these lightcurves we identify several hundred variable stars, and we discuss some of the most interesting cases.
Bakos Gaspar
Hartman Joel D.
Noyes Robert W.
Stanek Kris Z.
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