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SAO RAS observations of the optical outburst from [HB89] 1633+382

ATel #6954; O. I. Spiridonova, A. S. Moskvitin (SAO RAS), V. S. Bychkova (Astro Space Center RAS)
on 19 Jan 2015; 17:11 UT
Credential Certification: Barsukova E.A. (bars@sao.ru)

Subjects: Optical, Blazar

The field of the blazar [HB89]1633+382 was observed with the 1-meter telescope Zeiss-1000 of the Special Astrophysical Observatory of RAS (Caucasus, Russia) equipped with UBVRcIc filters and a 2k x 2k EEV 42-40 CCD. The observations were performed in the Rc filter. We detected the strong optical outburst noted by Danilet et al. (ATel #6930) and Arkharov et al. (ATel #6942). Our conclusion is based on the photometry of the object during the last two months.

Date (YYMMDD) JD R_mag +/- err
141125 2456987.153 17.64 +/- 0.03
141219 2457011.146 17.49 +/- 0.05
150117 2457040.610 15.23 +/- 0.01