January 26, 2018: AAVSO member/observer Adolfo Darriba (Madrid, Spain) informs us that Dr. Dave Thompson, Multiwavelength Coordinator for the Large Area Telescope (LAT) of NASA's Fermi Gamma-Ray Telescope, on behalf of the Fermi LAT Collaboration has called for observations of the blazar 3C 279, which is undergoing a major gamma-ray flare.
November 17, 2017
Event: Nova in Vela (ASASSN-17mt) and associated observing campaign
Discovered by: ASAS-SN (K. Z. Stanek (Ohio State University) et al.; ATel #10772)
Discovery magnitude: V=11.3, using data from the quadruple 14-cm "Cassius" telescope at CTIO, Chile
Discovery date: 2017 September 24.39 UT
August 25, 2008
Alert Notice 221: Fading of 2007+20 FG Sge AND Request to monitor 2138+43 SS Cyg for observations with HST, EUVE, and RXTE AND 1058+38 Markarian 421 in outburst AND Activity of 1814+39 AM Her continues AND 1746-17 -- Sgr is a new planetary-nebula nucleus
THE AMERICAN ASSOCIATION OF VARIABLE STAR OBSERVERS
25 Birch Street, Cambridge, MA 02138 USA
Tel. 617-354-0484 FAX 617-354-0665
AAVSO ALERT NOTICE 221 (May 9, 1996)
FADING OF 2007+20 FG SAGITTAE
June 28, 2012: The recently discovered gamma-ray source Swift J1910.2-0546 (Krimm et al., ATel #4139; Barthelmy et al., GCNC #13369; T. Ohshima., vsnet-alert 14674) is optically bright, reaching magnitude CR = 15.7 on 2012 June 14 (R. Pickard, BAAVSS, using the Faulkes Telescope South). The object was also observed by A. Odasso, using the Sierra Stars Observatory Network (A.