EP240331A: MASTER optical observations
Abstract
MASTER Global robotic net (http://observ.pereplet.ru Lipunov et al.,2010,Advances in Astronomy,2010,30L) started EP240331A ( Pan et al. ATel #16564, Center:169.414 -20.042 +-20';trigger 2024-03-31 22:07:17UT; Notice=1 Apr 2024 16:14 UT) at 2024-04-01 20:43:31 after MeerLICHT GCN 36007 (Groot et al.) MASTER-SAAO robotic telescope located in South African Astronomical Observatory was pointed to the EP-WXT Alert 240331.92 (11h 17m 39.36s , -20d 02m 31.2s, R=0.2) errorbox 81374 sec after trigger time at 2024-04-01 20:43:31 UT, with upper limit up to 19.0 mag. The observations began at zenith distance = 14 deg. The sun altitude is -51.1 deg. MASTER-Tavrida robotic telescope was pointed at 2024-04-01 20:47:05 UT, with upper limit up to 16.1 mag. The observations began at zenith distance = 64 deg. The sun altitude is -39.4 deg. MASTER-Kislovodsk robotic telescope was pointed at 2024-04-01 21:22:51 UT, with upper limit up to 19.7 mag. The observations began at zenith distance = 67 deg. The sun altitude is -42.1 deg. The galactic latitude b = 38 deg., longitude l = 276 deg. Real time updated cover map and OT discovered available here: https://master.sai.msu.ru/site/master2/observ.php?id=2412001 We obtain the following upper limits. Tmid-T0 | Date Time | Site | Coord (J2000) |Filt.| Expt. | Limit| Comment _________|_____________________|_____________________|____________________________________|_____|_______|_______|________ 81405 | 2024-04-01 20:43:31 | MASTER-SAAO | (11h 14m 32.28s , -19d 56m 04.1s) | C | 60 | 18.9 | 81405 | 2024-04-01 20:43:31 | MASTER-SAAO | (11h 16m 31.77s , -20d 09m 11.5s) | C | 60 | 18.9 | 81485 | 2024-04-01 20:44:51 | MASTER-SAAO | (11h 14m 29.81s , -19d 54m 44.8s) | C | 60 | 18.8 | 81485 | 2024-04-01 20:44:51 | MASTER-SAAO | (11h 16m 29.29s , -20d 07m 52.1s) | C | 60 | 18.9 | 81564 | 2024-04-01 20:46:11 | MASTER-SAAO | (11h 14m 30.49s , -19d 55m 52.3s) | C | 60 | 18.8 | 81564 | 2024-04-01 20:46:11 | MASTER-SAAO | (11h 16m 30.01s , -20d 08m 59.1s) | C | 60 | 18.9 | 81724 | 2024-04-01 20:48:50 | MASTER-SAAO | (11h 14m 29.27s , -19d 55m 18.4s) | C | 60 | 18.8 | 81724 | 2024-04-01 20:48:50 | MASTER-SAAO | (11h 16m 28.80s , -20d 08m 25.5s) | C | 60 | 18.9 | 81864 | 2024-04-01 20:50:10 | MASTER-SAAO | (11h 14m 29.42s , -19d 54m 16.8s) | C | 180 | 18.9 | 81864 | 2024-04-01 20:50:10 | MASTER-SAAO | (11h 16m 28.95s , -20d 07m 23.8s) | C | 180 | 18.8 | 82064 | 2024-04-01 20:53:30 | MASTER-SAAO | (11h 14m 37.88s , -19d 55m 13.6s) | C | 180 | 18.9 | Observations and reduction will be continued
- Publication:
-
GRB Coordinates Network
- Pub Date:
- April 2024
- Bibcode:
- 2024GCN.36009....1L