Swift J1727.8-1613 (GRB 230824A): Skynet Optical Observations
Abstract
We observed the field of Swift J1727.8-1613 (GRB 230824A) (Page et al., GCN 34537; Navaneeth et al., GCN 34538, Odeh et al., GCN 34543) with our 0.4m robotic telecope located in Meckering, Australia. The observation began at 14:11:20 UTC on Aug 24 2023, approximately 11 minutes after the first trigger. We obtained multiple expsoures in the B, V, R, and I filters. Exposure lengths were calculated using our automated exposure length scaling model. We detected a bright object, in the same location as Odeh et al., GCN 34543, within the uncertainty radius of the Swift localization, at: R.A. (J2000): 17:27:43.34 Dec. (J2000): -16:12:19.161 Below, we report our photometric measurements. ------------------------------------------- Date TimeTakenUTC ExpTime Filter Mag MagErr ------------------------------------------- 08-24-2023 | 14:11:20 | 25.721s | B | 14.22 | 0.013 08-24-2023 | 14:11:52 | 28.873s | V | 13.88 | 0.011 08-24-2023 | 14:12:29 | 13.756s | R | 13.69 | 0.012 08-24-2023 | 14:12:49 | 10.774s | I | 13.60 | 0.014 08-24-2023 | 14:15:50 | 37.756s | B | 14.25 | 0.010 08-24-2023 | 14:16:34 | 40.014s | V | 13.89 | 0.008 08-24-2023 | 14:17:21 | 19.012s | R | 13.69 | 0.009 08-24-2023 | 14:17:46 | 15.507s | I | 13.67 | 0.012 08-24-2023 | 14:21:35 | 56.372s | V | 13.89 | 0.007 08-24-2023 | 14:25:40 | 63.628s | B | 14.26 | 0.007 08-24-2023 | 14:26:49 | 66.016s | V | 13.88 | 0.006 08-24-2023 | 14:28:02 | 31.063s | R | 13.64 | 0.006 08-24-2023 | 14:28:40 | 24.327s | I | 13.60 | 0.008 08-24-2023 | 14:33:49 | 84.567s | B | 14.25 | 0.006 08-24-2023 | 14:35:19 | 88.210s | V | 13.86 | 0.005 08-24-2023 | 14:36:53 | 40.934s | R | 13.65 | 0.005 08-24-2023 | 14:37:40 | 32.058s | I | 13.63 | 0.007 08-24-2023 | 14:43:26 | 109.523s | B | 14.25 | 0.006 08-24-2023 | 14:45:23 | 113.289s | V | 13.89 | 0.005 08-24-2023 | 14:47:22 | 51.216s | R | 13.67 | 0.005 08-24-2023 | 14:48:20 | 41.685s | I | 13.61 | 0.007 08-24-2023 | 14:54:51 | 140.854s | B | 14.25 | 0.006 08-24-2023 | 14:57:17 | 147.908s | V | 13.88 | 0.005 08-24-2023 | 14:59:52 | 65.83s | R | 13.65 | 0.006 08-24-2023 | 15:01:05 | 53.273s | I | 13.58 | 0.007 08-24-2023 | 15:09:40 | 177.571s | B | 14.15 | 0.005 08-24-2023 | 15:15:54 | 83.812s | R | 13.65 | 0.006 08-24-2023 | 15:17:25 | 67.06s | I | 13.56 | 0.006 08-24-2023 | 15:27:51 | 225.946s | B | 14.23 | 0.006 08-24-2023 | 15:31:42 | 232.571s | V | 13.86 | 0.006 08-24-2023 | 15:35:41 | 105.216s | R | 13.61 | 0.006 08-24-2023 | 15:37:32 | 82.401s | I | 13.60 | 0.007 08-24-2023 | 15:50:16 | 284.651s | B | 14.31 | 0.006 08-24-2023 | 15:55:06 | 293.376s | V | 13.81 | 0.004 08-24-2023 | 16:00:07 | 131.78s | R | 13.57 | 0.005 08-24-2023 | 16:02:25 | 106.593s | I | 13.51 | 0.005 08-24-2023 | 16:30:17 | 164.791s | R | 13.53 | 0.006 08-24-2023 | 16:33:08 | 133.318s | I | 13.50 | 0.009 Our images have been calibrated using stars from the APASS catalog.
- Publication:
-
GRB Coordinates Network
- Pub Date:
- August 2023
- Bibcode:
- 2023GCN.34556....1D