CCD technique for longitude/latitude astronomy

Details CCD technique for longitude/latitude astronomy CCD technique for longitude/latitude astronomy

Oct 2003

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2003pobeo..75..229d&link_type=abstract

Publications of the Astronomical Observatory of Belgrade (ISSN 0373-3742), No. 75, p. 229 - 234 (2003). In: Proceedings of the X

Astronomy and Astrophysics

Astronomy

Geodetic Astronomy

Scientific paper

We report about CCD (Charge Coupled Device) experiments with the isntruments of astrometry and geodesy for the longitude and latitude determinations. At the Techn. University Vienna (TU Vienna), a mobile zenith camera "G1" was developed, based on CCD MX916 (Starlight Xpress) and F=20 cm photo optic. With Hipparcos/Tycho Catalogue, the first results show accuracy up to 0."5 for latitude/longitude. The PC-guided observations can be completed within 10 minutes. The camera G1 (near 4 kg) is used for astrogeodesy (geoid, Earth's crust, etc.). At the Belgrade Astronomical Observatory (AOB), the accuracy of (mean value of) latitude/longitude determinations can be a few 0."01 using zenith stars, Tycho-2 Catalogue and a ST-8 of SBIG (Santa Barbara Instrument Group) with zenith-telescope BLZ (D=11 cm, F=128.7 cm). The same equipment with PIP instrument (D=20 cm and F=457.7 cm, Punta Indio PZT, near La Plata) yields a little better accuracy than the BLZ's one. Both instruments, BLZ and PIP, where in the list of Bureau International de l'Heure - BIH. The mentioned instruments have acquired good possibilities for semi or full-automatic observations.

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