TITLE: GCN CIRCULAR NUMBER: 38821 SUBJECT: GRB 250103A: Bassano Bresciano Observatory upper limit DATE: 25/01/04 13:43:22 GMT FROM: Ulisse Quadri at Bassano Bresciano Observatory osservatoriobassano@gmail.com
U.Quadri, L.Strabla and P.Madurini (Bassano Bresciano Astronomical Observatory)
Members of: GRB/UAI - Gamma ray Burst section of Unione Astrofili Italiani. AAVSO - American Association of Variable Star Observers. GAC - Gruppo Astrofili Cremonesi.
In a large collaboration with: M.G. Dainotti (National Astronomical Observatory of Japan), Y. Niino (Tokyo University, Institute of Astronomy), K. Kalinowski (Aarhus University, Department of Physics and Astronomy), B. De Simone (Universita' degli Studi Di Salerno) report:
We imaged the field of GRB 250103A detected by SVOM with the robotic telescope of (IAU station 565) Bassano Bresciano Observatory, Italy. The observations started 7h 55m after the GRB trigger with our Newton telescope D=450 mm F/D=4.5.
We co-added 2 series of 100 exposures of 20 sec each.
Start T0+ End T0+ Rc lim. Err. 7h 46m 8h 27m 20.2 +/- 0.1 8h 28m 9h10m 20.2 +/- 0.1
We did not found any optical uncatalogued object within the SVOM error circle.
Magnitudes were estimated with the pan-STARRS cat and are derived using Lupton (2005) equations.
Not corrected for galactic dust extinction.
Reference: http://www.osservatoriobassano.org
The message may be cited.
View this GCN Circular online at https://gcn.nasa.gov/circulars/38821. --- To unsubscribe, open this link in a web browser: https://gcn.nasa.gov/unsubscribe/eyJhbGciOiJIUzI1NiJ9.eyJlbWFpbCI6InZzbmV0LW...