Late-time Optical Photometry of the 2015 Eruption of M31N 2008-12a
ATel #7976; K. Hornoch (Astronomical Institute, Ondrejov, Czech Republic), H. Kucakova (Astronomical Institute, Charles U., Prague, Czech Republic), R. Quimby (SDSU), A. W. Shafter (SDSU), M. Henze (IEEC/CSIC), M. J. Darnley (LJMU), M. Kato (Keio University), for a larger collaboration
on 1 Sep 2015; 15:56 UT
Credential Certification: Allen W. Shafter (ashafter@mail.sdsu.edu)
Subjects: Optical, Nova, Transient
We report additional multicolor photometry of the most recent outburst of the remarkable recurrent nova M31N 2008-12a (ATel #7964, #7965, #7967, #7968, #7969, #7974) acquired with the 0.65-m telescope at Ondrejov and the Mount Laguna Observatory's 40-inch reflector. For the measurements from Ondrejov, we used co-added images obtained from many single 90-s exposures to suppress the effect of high background caused by strong moonlight.
Date UT Band Magnitude Total exposure [s] Observatory
2015 08 30.976 V 20.21 ± 0.13 3600 Ondrejov
2015 08 30.845 R 19.77 ± 0.12 3600 Ondrejov
2015 08 30.976 R 19.76 ± 0.09 3600 Ondrejov
2015 08 31.113 R 19.83 ± 0.11 3330 Ondrejov
2015 09 01.065 R 21.02 ± 0.19 6750 Ondrejov
2015 08 30.292 I 19.01 ± 0.07 600 MLO
2015 08 30.312 I 19.00 ± 0.08 600 MLO
