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Brightening of Blazar S5 1803+78

ATel #7988; Patricia Lampens (Royal Observatory of Belgium), Paul Van Cauteren
on 3 Sep 2015; 13:09 UT
Credential Certification: Patricia Lampens (patricia.lampens@oma.be)

Subjects: Optical, AGN, Blazar

Referred to by ATel #: 8023, 15505

We report significant brightening in the filter V of the blazar S5 1803+78 according to the following observations:

2015 03 18.187 V 15.47
2015 06 07.027 V 16.19
2015 06 17.018 V 16.40
2015 08 22.901 V 14.65
2015 08 29.911 V 14.24

The comparison star (18h00m33.88s +78°28'33.5"), adopted from the AAVSO sequence, has mag 15.73 (V). Each observation is based on a stack of 10 images of 120 sec exposure. Instrumentation: 16-inch f/8 Ritchey-Chrétien telescope equipped with SBIG ST10XME ccd camera installed at the Humain station of the Royal Observatory of Belgium.