Fermi GRB 240222A: Global MASTER-Net observations report
Abstract
MASTER-SAAO robotic telescope (Global MASTER-Net: http://observ.pereplet.ru, Lipunov et al., 2010, Advances in Astronomy, vol. 2010, 30L) located in South Africa (South African Astronomical Observatory) started inspect of the Fermi GRB 240222A ( Fermi GBM team, GCN 35769) errorbox 33348 sec after notice time and 33382 sec after trigger time at 2024-02-22 18:07:54 UT, with upper limit up to 18.3 mag. Observations started at twilight. The observations began at zenith distance = 50 deg. The sun altitude is -10.1 deg. The galactic latitude b = -6 deg., longitude l = 281 deg. Real time updated cover map and OT discovered available here: https://master.sai.msu.ru/site/master2/observ.php?id=2383850 We obtain a following upper limits. Tmid-T0 | Date Time | Site | Coord (J2000) |Filt.| Expt. | Limit| Comment _________|_____________________|_____________________|____________________________________|_____|_______|_______|________ 33473 | 2024-02-22 18:07:54 | MASTER-SAAO | (09h 40m 49.96s , -68d 03m 28.5s) | C | 180 | 17.9 | 33473 | 2024-02-22 18:07:54 | MASTER-SAAO | (09h 18m 15.91s , -67d 52m 27.6s) | C | 180 | 17.4 | 33672 | 2024-02-22 18:11:13 | MASTER-SAAO | (09h 40m 56.74s , -68d 04m 32.3s) | C | 180 | 18.3 | Filter C is a clear (unfiltred) band. The observation and reduction will continue. The message may be cited.
- Publication:
-
GRB Coordinates Network
- Pub Date:
- February 2024
- Bibcode:
- 2024GCN.35774....1L