Discovery of a new M81 nova candidate
ATel #9979; G. Sala, P. Sin (UPC-IEEC), M. Henze (CSIC-IEEC), K. Hornoch (Ondrejov), J. Vrastil, H. Kucakova (Charles University), S. C. Williams (Lancaster), M. J. Darnley (LJMU), A. Kaur, D. H. Hartmann (Clemson), J. Jose (UPC-IEEC), M. Hernanz (CSIC-IEEC), A. W. Shafter (SDSU), H. Meusinger (TLS)
on 20 Jan 2017; 16:38 UT
Credential Certification: Gloria Sala (gloria.sala@upc.edu)
The M81 nova monitoring collaboration reports the discovery of a
probable nova in M81 on co-added images obtained at the 0.80-m
telescope Joan Oro (TJO) and the 0.65-m telescope at Ondrejov (OND).
The candidate was first detected with the TJO on
2017-01-13T21:05:19.08 with an R-magnitude 19.4 +/-0.3.
We measure the position of the candidate M81N 2017-01a to be RA: 9:55:39.8 and
DEC:+69:06:28.1 (J2000, position 1σ error 0.2").
Here we list the observing dates and corresponding photometry:
Date [UT] | Mag | Err | Filter | Telescope
2017-01-11.103 | <21.7 | | C | OND
2017-01-13.879 | 19.4 | 0.3 | R | TJO
2017-01-18.998 | 21.3 | 0.4 | C | OND
2017-01-20.049 | 21.3 | 0.3 | C | OND
The Telescopi Joan Oro (TJO) is a 80-cm Ritchey-Chretien F/9.6
telescope at the Observatori Astronomic del Montsec, owned by the
Catalan Government and operated by the Institut d'Estudis Espacials de
Catalunya, Spain. It uses a Finger Lakes PL4240-1-BI CCD Camera with a
Class 1 Basic Broadband coated 2k x 2k chip with 13.5 microns square
pixels. The OND 0.65-m is a reflecting telescope at the Ondrejov
observatory operated jointly by the Astronomical Institute of ASCR and
the Astronomical Institute of the Charles University of Prague, Czech
Republic. It uses a Moravian Instruments G2-3200 CCD camera (with a
Kodak KAF-3200ME sensor and standard BVRI photometric filters) mounted
at the prime focus. The unfiltered OND photometry was calibrated
against R-band comparison stars from Perelmuter & Racine (1995). The
TJO photometry is based on the SDSS DR7 photometry catalogue.
