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HD 163565


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Wide-Field Millimagnitude Photometry with the HAT: A Tool for Extrasolar Planet Detection
We discuss the system requirements for obtaining millimagnitudephotometric precision over a wide field using small-aperture, shortfocal length telescope systems such as those being developed by a numberof research groups to search for transiting extrasolar planets. Wedescribe a Hungarian Automated Telescope (HAT) system, which attempts tomeet these requirements. The attainable precision of HAT has beensignificantly improved by a technique in which the telescope is made toexecute small pointing steps during each exposure so as to broaden theeffective point-spread function (PSF) of the system to a value morecompatible with the pixel size of our CCD detector. Experiments during apreliminary survey (spring 2003) of two star fields with the HAT-5instrument allowed us to optimize the HAT photometric precision usingthis method of PSF broadening; in this way we have been able to achievea precision as good as 2 mmag on brighter stars. We briefly describedevelopment of a network of longitudinally spaced HAT telescopes(HATNet).

Computer reference stars identification on meteor photographs.
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观测天体数据

星座:武仙座
右阿森松:17h55m00.62s
赤纬:+40°26'54.6"
视星:8.162
距离:181.818 天文距离
右阿森松适当运动:-0.2
赤纬适当运动:2.4
B-T magnitude:8.428
V-T magnitude:8.184

目录:
适当名称   (Edit)
HD 1989HD 163565
TYCHO-2 2000TYC 3093-292-1
USNO-A2.0USNO-A2 1275-09647435
HIPHIP 87713

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