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ATEL # 3047; T. Krajci (AAVSO), K. Sokolovsky (MPIfR/ASC Lebedev), A. Henden (AAVSO)
on 21 Nov 2010; 16:40 UT
Password Certification: Frank Schinzel (firstname.lastname@example.org)
Subjects: Optical, AGN, Quasars
Following the extremely bright gamma-ray flare of the blazar 3C 454.3 detected by AGILE (ATel #3034, #3043) and Fermi/LAT (ATel #3041) we have performed photometric observations of the source using a 28cm telescope equipped with a SBIG ST-8 CCD camera and a set of griz (SDSS) filters. The observations conducted on November 18/19 and 19/20, 2010, at the time of peak daily gamma-ray flux (according to the Fermi/LAT public lightcurve), resulted in the following:
The latter observation corresponds to Rc=12.99 (Jordi, Grebel, & Ammon 2006, A&A, 460, 339) indicating the brightest optical state of the source since early-2008 (Villata et al. 2009, A&A, 504L, 9; ATel #2155, #2181, #2201, #2325, #2332, #2333, #2345, #2352, #2535, #3003, #3005). We will continue photometric monitoring of 3C 454.3 until the end of the current active period. The results of the monitoring will be available on the dedicated web-page listed below.
Dedicated Monitoring Page