Proposed ultraviolet observations with TYCHO

Details Proposed ultraviolet observations with TYCHO Proposed ultraviolet observations with TYCHO

May 1982

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1982esasp.177...27h&link_type=abstract

In ESA The Sci. Aspects of the Hipparcos Space Astrometry Mission p 27-28 (SEE N82-30146 20-88)

Astronomy and Astrophysics

Astronomy

Astrometry, European Space Programs, Experiment Design, Ultraviolet Astronomy, A Stars, Astronomical Maps, B Stars, Satellite Observation, Satellite-Borne Instruments, Star Distribution, Ultraviolet Filters

Scientific paper

The introduction of an ultraviolet slit with U filter into the Hipparcos satellite star mappers, as part of the Tycho experiment, is proposed. Tycho uses star mapper data to observe 400,000 stars brighter than B-11, with accuracy at B = 10 of 0.03 arcsec for position and 0.03 mag for B and V magnitudes. A slit of width 10 arcsec, 20 arcmin length, perpendicular to scan direction is assumed. This gives observing time of 0.067 sec per star mapper passage, and 3 sec total observing time for the 30 month mission. Accuracy at B = 10 of 0.08 mag for spectral types BO and AO to GO is predicted.

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