SGR 1E 1841-045 / Kes 73 (Trigger 1249878): Osservatorio Atronomico Nastro Verde optical upper limit
Abstract
We imaged the field of the soft gamma repeater SGR 1E 1841-045 / Kes 73 (trigger=1249878) (S. Dichiara (PSU) and D. M. Palmer (LANL) GCN 37222) with telescope of Nastro Verde Observatory - Sorrento (Naples), Italy. Member of: AAVSO - American Association of Variable Star Observers. UAI - Unione Astrofili Italiani/GRB Section The observations started at 20:57 UT of 2024/08/21, after about 30 minutes after the transient, with clear sky, with principal telescope SC 0.35 f/10 with focal reduced + CCD Sbig ST10 XME I took 23 image of 60 sec each. All images are unfiltered, calibrated with masterdark and masterflat,stacked with Tycho Tracker software We have not detected any clearly visible sources, up to 19.0th magnitude with clear skies. Start End Rlim 20:57:07 UT 21:14:48 UT 19.0 We did not found any optical counterpart. Magnitudes were estimated with the Gaia DR2 cat. and are not corrected for galactic dust extinction. The message may be cited.
- Publication:
-
GRB Coordinates Network
- Pub Date:
- August 2024
- Bibcode:
- 2024GCN.37285....1S