GRB 211227A: Lijiang 2.4m Telescope Optical Observations
Abstract
We observed the field of GRB 211227A (Beardmore et al., GCN #31316) with the Lijiang 2.4m telescope on January 3, 2022, starting at 18:23:25 UT, about 6.8 day after trigger. The observations were performed in R band with a total exposure of 1200 s at airmass of 1.2 and a seeing of ~1.7, under good weather conditions. Within the XRT enhanced errorbox (Goad et al., GCN #31322), we did not detect any source to a depth of R > 21.5 mag calibrated by nearby SDSS DR12 stars (SDSS J084838.92-024405.9, J084838.22-024355.7, J084836.33-024403.8). This is consistent with other non-detections reported (Lipunov et al., GCN #31315; Hu et al., GCN #31318; Fu et al., GCN #31320; Strausbaugh et al.,GCN #31321; Perley, GCN #31323; Malesani et al., GCN #31324; Belles et al., GCN #31328, Kann et al., GCN #31341,GCN #31376 O'Connor et al.). We thank the staff of the Lijiang 2.4m telescope, in particular Jiangguo Wang for scheduling of these observations.
- Publication:
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GRB Coordinates Network
- Pub Date:
- January 2022
- Bibcode:
- 2022GCN.31386....1L