TITLE:   GCN CIRCULAR
NUMBER:  36568
SUBJECT: GRB 240529A: Skynet Optical Observations
DATE:    24/05/29 18:07:59 GMT
FROM:    Dylan Dutton at UNC Chapel Hill <ddutton59@gmail.com>

Dylan Dutton, Daniel Reichart, Joshua Haislip, Vladimir Kouprianov, Megan Dubay, Ruide Fu, Donovan Schlekat, Logan Selph, James Davidson, Edward Murphy, and Carlos Salgado report on behalf of the Skynet Robotic Telescope Network at the University of North Carolina at Chapel Hill.

We observed the field of GRB 240529A with Skynet's 0.6m RRRT telecope located in Virginia. The observation began at 05:19:30 UTC on May, 29 2024 approximately 2.3 hours after the trigger reported by Swift (Eyeles-Ferris et al., GCN 36556) and lasted until 08:33:52 UTC.

We obtained multiple expsoures in the B, V, and R filters. Exposure lengths were calculated using our automated exposure length scaling model.

We clearly detected a bright object within the uncertainty radius of the Swift localization that is consistent with detections from GOTO (Kumar et al. GCN 36559), NOT (Fu et al. GCN 36561), UVOT (Shilling et al. GCN 36562), and BOOTES-6 (Perez-Garcia et al. GCN 36563) at:

R.A. (J2000): 22:21:25.904
Dec. (J2000): 51:33:42.512

We report the photometry below.

ExpLen | Filter | Mag    | MagErr | Date         | UTC
---------------------------------------------------------
100s   | V      | 16.557 | 0.116  | May 29, 2023 | 05:19:30
111s   | R      | 15.838 | 0.032  | May 29, 2023 | 05:21:40
297s   | B      | 17.587 | 0.032  | May 29, 2024 | 06:11:34
222s   | V      | 16.537 | 0.015  | May 29, 2024 | 06:16:41
155s   | R      | 15.669 | 0.011  | May 29, 2024 | 06:20:32
419s   | B      | 17.635 | 0.029  | May 29, 2024 | 06:23:25
313s   | V      | 16.618 | 0.014  | May 29, 2024 | 06:30:33
166s   | R      | 15.839 | 0.012  | May 29, 2024 | 06:35:55
451s   | B      | 17.883 | 0.034  | May 29, 2024 | 06:38:59
337s   | V      | 16.764 | 0.015  | May 29, 2024 | 06:46:39
179s   | R      | 15.916 | 0.012  | May 29, 2024 | 06:52:25
485s   | B      | 17.833 | 0.031  | May 29, 2024 | 06:55:41
362s   | V      | 16.960 | 0.017  | May 29, 2024 | 07:03:55
192s   | R      | 16.212 | 0.015  | May 29, 2024 | 07:10:06
522s   | B      | 18.377 | 0.048  | May 29, 2024 | 07:13:35
389s   | V      | 17.119 | 0.018  | May 29, 2024 | 07:22:26
207s   | R      | 16.297 | 0.015  | May 29, 2024 | 07:29:04
561s   | B      | 18.320 | 0.043  | May 29, 2024 | 07:32:48
419s   | V      | 17.090 | 0.017  | May 29, 2024 | 07:42:18
222s   | R      | 16.315 | 0.014  | May 29, 2024 | 07:49:27
600s   | B      | 18.366 | 0.042  | May 29, 2024 | 07:53:25
450s   | V      | 17.192 | 0.017  | May 29, 2024 | 08:03:34
239s   | R      | 16.372 | 0.014  | May 29, 2024 | 08:11:14
600s   | B      | 18.440 | 0.046  | May 29, 2024 | 08:15:30
484s   | V      | 17.417 | 0.021  | May 29, 2024 | 08:25:39
256s   | R      | 16.624 | 0.018  | May 29, 2024 | 08:33:52

Our images have been calibrated using stars from the APASS catalog.