Overview of TYCHO data analysis

Details Overview of TYCHO data analysis Overview of TYCHO data analysis

Aug 1985

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1985esasp.234..225h&link_type=abstract

In ESA The European Astrometry Satellite HIPPARCOS: Scientific Aspects of the Input Catalog Preparation p 225-230 (SEE N86-1838

Astronomy and Astrophysics

Astronomy

2

Data Processing, Data Reduction, Hipparcos Satellite, Stellar Occultation, Astrometry, Astronomical Catalogs, Stellar Spectrophotometry

Scientific paper

In TYCHO data analysis (2 million stars) photon counts are processed to detect slit transits exceeding a certain signal-to-noise ratio. These detections or transits, collected from, e.g., 6 months of observation, are identified with stars of a TYCHO Input Catalog (TIC) in a subsequent process. A limiting magnitude of (B+V)/2 = 11-0 is expected within small areas of 12 x 12 arcsec sq centered on each TIC position, corresponding to a TYCHO output catalog of at least 500,000 stars. The typical accuracy of a mean value in the output catalog is 0.03 arcsec and 0.03 mag for TYCHO astrometry and photometry, respectively.

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