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OT discovered by MASTER during Fermi Trigger Num 430645968 follow up observations follow up observations

ATel #6419; N. Tiurina, P. Balanutsa, D. Denisenko, V. Lipunov, E. Gorbovskoy, V. Kornilov, V. Chazov, A. Kuznetsov, V. Vladimirov, V. Yecheistov, V. Shumkov (Moscow State University, SAI), K. Ivanov, S. Yazev, N. Budnev, E. Konstantinov, O. Chuvalaev, V. Poleshchuk, O. Gress (Irkutsk State University), A. Parkhomenko, A. Tlatov, D. Dormidontov, V. Senik (Kislovodsk Solar Station of Pulkovo Observatory), V. Yurkov, Y. Sergienko, D. Varda, E. Sinyakov, A. Gabovich (Blagoveshchensk Educational University), V. Krushinsky, I. Zalozhnih, A. Popov, A. Bourdanov (Ural Federal University), P. Podvorotny, S. Shurpakov (MASTER team members), H. Levato, C. Saffe (ICATE), C. Mallamaci, C. Lopez, F. Podest (OAFA)
on 26 Aug 2014; 11:01 UT
Credential Certification: Nataly Tyurina (tiurina@sai.msu.ru)

Subjects: Optical, Gamma Ray, Supernovae, Transient

Referred to by ATel #: 6421, 6422

MASTER OT J230448.20+324534.1 - possible GRB afterglow candidate

MASTER-Tunka auto-detection system during follow-up Fermi Trigger 430645968 observations (GCN 16745) discovered OT source at:

MASTER-Tunka auto-detection system discovered MASTER OT J230448.20+324534.1 at (RA, Dec) = 23h 04m 48.20s +32d 45m 34.1s on 2014-08-25.62245 UT. The OT unfiltered magnitude is 18.6m (limit 19.9m).

The OT is seen in 2 images. There is no minor planet at this place. THere is SDSS9 J230447.99+324540.9 galaxy (Rmag = 22) with 7.3 arcsec offset.

We have reference image without OT on 2013-08-30.62251 UT with unfiltered magnitude limit 19.9m.

Spectral observations are required.

The discovery and reference images are available at: http://master.sai.msu.ru/static/OT/230448.20+324534.1.png

The coverage map and OT position are available at http://master.sai.msu.ru/static/GRB140825.png

List of Optical Transients discovered by MASTER

Global MASTER Net