In:
Proceedings of the International Astronomical Union, Cambridge University Press (CUP), Vol. 14, No. S339 ( 2017-11), p. 340-343
Abstract:
Photographic plate archives contain a wealth of information about the positions and brightness of celestial objects decades ago. Plate digitization is necessary to make this information accessible, but extracting it is a technical challenge. We have developed algorithms to extract photometry with an accuracy of better than ∼0.1 mag. in the range 13 〈 B 〈 17 mag from photographic images obtained in 1948–1996 with the 40-cm Sternberg Institute astrograph (30 × 30 cm plate size, 10 × 10 deg field of view) and digitized using a flatbed scanner. The extracted photographic light-curves are used to identify thousands of new high-amplitude variable stars ( 〉 0.2 mag). The algorithms are implemented in the free software VaST available at http://scan.sai.msu.ru/vast/
Type of Medium:
Online Resource
ISSN:
1743-9213
,
1743-9221
DOI:
10.1017/S174392131800296X
Language:
English
Publisher:
Cambridge University Press (CUP)
Publication Date:
2017
detail.hit.zdb_id:
2170724-8
SSG:
16,12
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