ZTF21aaeyldq: LBT near-infrared observations
Abstract
We observed the field of ZTF21aaeyldq (Ho et al., GCN 29305) simultaneously the J and H bands with the LUCI near-infrared imager and spectrograph mounted on the Large Binocular Telescope (LBT, Mt Graham, AZ, USA). Observations were obtained on 2021-01-17 at the UT 06:35:00 (midtime), i.e. ~1 day after the first ZTF detection, for a total of 15 min of on-source exposure time in each band under not very good sky conditions (seeing=1.4"). We detect the transient (de Ugarte-Postigo GCN#29307, Kumar et al., GCNs #29308; Ahumada et al., GCN #29309; Zhu et al., GCN #29310; Hu et al., GCN #29312, Kann et al., GCN #29321) in both J and H-band images, and we measure the following AB magnitudes: J=21.62+-0.20 H=21.36+-0.24 calibrated against 2MASS field stars. We acknowledge the excellent support from the LBTO and LBT-INAF staff, particularly A. Cardwell and D. Paris, in obtaining these observations.
- Publication:
-
GRB Coordinates Network
- Pub Date:
- January 2021
- Bibcode:
- 2021GCN.29327....1R