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The Nova and Supernova Star Patrol at Abastumani

Published online by Cambridge University Press:  12 April 2016

Givi N. Kimeridze  and
Teimuraz M. Kvernadze
Givi N. Kimeridze
Affiliation:
Abastumani Astrophysical Observatory, 383762 Abastumani, Republic of Georgia
Teimuraz M. Kvernadze
Affiliation:
Abastumani Astrophysical Observatory, 383762 Abastumani, Republic of Georgia

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The Schmidt telescope (360/333/625 mm) of the Abastumani Observatory is used for photographic observations. It provides a field of 7.3° (80 mm) and a non-vignetted field of 4° (44 mm). For an astronomic film of medium sensitivity (DIN 20, ASA 70) the limiting exposure time is 7–8 m and the limiting magnitude is 16.5. For fine grain emulsions, a 15 m exposure time provides the limiting magnitude of 18.0. Since 1961 systematic photographic (mainly photovisual) observations have been carried out, within the International Cooperation Program of the Supernova Patrol in the direction of 24 selected fields. During a night an average of 10 exposures are taken. About 10,000 exposures have been obtained up to now and 30 Supernovae discovered, of which 10 were first identified in Abastumani (Chuadze 1967; Kimeridze 1971, 1979; Kimeridze et al. 1984, 1988, 1989a, b) In parallel with the patrol observations, photovisual and photographic (sometimes UBV) photometry was performed for 9 discovered Supernovae. The observations are still continuing.

Type
III. The Use of CCDs in Schmidt Telescopes
Information
International Astronomical Union Colloquium , Volume 148: The Future Utilisation of Schmidt Telescopes , 1995 , pp. 65 - 67
Copyright
Copyright © Astronomical Society of the Pacific 1995

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