GRB 230812B: SAO RAS optical observations
Abstract
We observed the field of GRB 230812B (Fermi GBM Team, GCN 34386; Scotton et al., GCN 34392; Page et al. GCN 34394; Kuin et al., GCN 34399; Casentini et al., GCN 34402) with the 1-m telescope of SAO RAS Zeiss-1000 equipped with the CCD photometer. We obtained 8 x 300 sec. images in Rc band on 19:46:41--20:32:24 UT (August 17). The OT (Lesage et al., GCN 34387; Scotton et al., GCN 34392; Page, GCN 34394; Zheng & Filippenko, GCN 34395; Lipunov et al., GCN 34396; Salgundi et al., GCN 34397; Ackley et al., GCN 34398; Xiong et al., GCN 34401; Casentini et al., GCN 34402; Frederiks et al., GCN 34403; Mao et al., GCN 34404; Odeh et al., GCN 34405; Moskvitin & Spiridonova, GCN 34406; Leonini et al., GCN 34408; de Ugarte Postigo et al., GCNs 24409, 34410; Belkin et al. GCN 34412; Ruocco et al. GCN 34413; Frederiks et al. GCN 34414; Ruocco et al. GCN 34415; Shrestha et al. GCN 34416; Quadri et al. GCN 34417; Adami et al. GCN 34418; Moretti et al. GCN 34419; Kumar et al. GCN 34420; Belkin et al. GCNs 34421, GCN 34423; Pyshna et al., GCN 34425; Moskvitin & Spiridonova, GCN 34428; Quadri & Strabla, GCN 34430; Mihov et al., GCN 34431; Belkin et al. GCN 34432; Klose et al., GCN 34435; Scarfi, GCN 34436; Moskvitin & Spiridonova, GCN 34442) is clearly detected in our stacked frame with the brightness of R = 21.46 +/- 0.06 (t_mid - t0 = 4.0496d). This preliminary photometry is based on the nearby SDSS stars; magnitudes are converted using Lupton (2005) equations.
- Publication:
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GRB Coordinates Network
- Pub Date:
- August 2023
- Bibcode:
- 2023GCN.34461....1M