AAVSO: American Association of Variable Star Observers

APASS DR10 Has Arrived! (Abstract)

Volume 47 number 1 (2019)

Arne A. Henden
106 Hawkins Pond Road, Center Harbor, NH 03226; ahenden@gmail.com

Abstract

(Abstract only) The AAVSO Photometric All-Sky Survey (APASS) has reached a new milestone with its Data Release 10 (DR10). Approximately 128 million stars have been calibrated from 7 < V < 17 and in passbands B,V,u',g',r',i',z'. This dataset has been made public on the AAVSO website. APASS is designed to provide calibrated photometry everywhere in the sky and for nearly all CCD images. Much like the catalogs such as UCAC or GAIA do for astrometry, APASS gives the ability to photometrically calibrate your data without having to resort to all-sky photometry. With DR10, the sky coverage is about 99%. There are still a few missing fields, primarily in the northern sky above declination 20 degrees. The upcoming DR11 will cover most of those fields, with about 200 new nights of data. It should be released very close to the time of the Annual meeting. APASS is a volunteer-driven project. There are many opportunities for people at all skill levels to contribute to the project and help it reach its conclusion!