GCN Circular 33237
Rahul Gupta, Amit K. Ror, S. B. Pandey, A. Aryan, A. Ghosh, Kiran Wani, Dimple, and K. Misra (ARIES) report: We observed the fast optical transient ZTF23aabmzlp/AT2023azs discovery by Zwicky Transient Facility (Andreoni et al. 2023, GCN 33229) using the 1.3m Devasthal Fast Optical Telescope (DFOT) located at the Devasthal observatory of Aryabhatta Research Institute of Observational Sciences (ARIES), Nainital, India. We have taken multiple frames having an exposure time of 120 sec in the R filter. We stacked the images after the alignment. We clearly detected the ZTF23aabmzlp/AT2023azs in the stacked image. The estimated preliminary magnitude is the following: Date_Start_UT T_start-T0 (days) Filter Exp time (sec) Magnitude ============================================================== 2023-01-28 18:42:44 ~0.52 R 120 sec*10 20.21 +/- 0.07 Where T0 is the ZTF first detection time of the transient. Our optical detection is consistent with Kumar et al. 2023, GCN 33230. The temporal decay behaviour of ZTF23aabmzlp/AT2023azs suggests an afterglow candidate, although multiwavelength follow-up observations are required to confirm. The magnitude is not corrected for the Galactic extinction in the direction of the transient. Photometric calibration is performed using the standard stars from the USNO-B1.0 catalog. This circular may be cited.