Optical Photometry of M31N 2008-12a After Maximum Light of the 2015 Eruption
ATel #7969; K. Hornoch (Astronomical Institute, Ondrejov, Czech Republic), M. Henze (IEEC/CSIC), M. J. Darnley (LJMU), A. W. Shafter (SDSU), M. Kato (Keio University), for a larger collaboration
on 30 Aug 2015; 14:43 UT
Credential Certification: Matt Darnley (M.J.Darnley@ljmu.ac.uk)
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)
acquired with the 0.65-m telescope at Ondrejov under photometric conditions.
For the measurements, 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]
2015 08 30.081 B 19.33 ± 0.10 3510
2015 08 29.866 V 19.10 ± 0.09 2250
2015 08 29.933 V 19.17 ± 0.10 2880
2015 08 30.049 V 19.30 ± 0.11 2160
2015 08 29.814 R 18.65 ± 0.09 1800
2015 08 29.932 R 18.65 ± 0.08 1350
2015 08 30.062 R 18.79 ± 0.09 1260
2015 08 29.838 I 18.50 ± 0.10 2250
2015 08 29.943 I 18.42 ± 0.10 1800
2015 08 30.088 I 18.80 ± 0.10 2610
We thank K. Honkova for sharing her observing time.