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(AAVSO Photometric All-sky Survey)
(down to 16 magnitude)

APASS (for AAVSO Photometric All-sky Survey) is a Photometric Survey in progress since 2010 having yielded a Catalog with photometry information on over 60 million stars down to about 16 Magnitude. It is all-sky, carried out by special-purpose automated 20cm Telescopes. It is a project of AAVSO (American Association of Variable Star Observers).

(stars,survey,photometry,automated,all sky)
APASSAPASS J327.7257-16.5170APASS