{ "bibcode": "2022GCN.32961....1L", "body": "\n\n \n \n \n \n

\n

Simone Leonini, M. Conti, P. Rosi and L.M. Tinjaca Ramirez (Montarrenti Observatory, Siena, Italy) report:

\n

We observed the field of the short GRB221120A (Trigger 1141030, R.A.J. Eyles-Ferris et al., GCN Circ. 32955) with the automatic 0.53m RC telescope + U47 detector at Montarrenti Observatory (Siena, Italy, IAU code C88).

\n

The observations were started under good weather conditions at 2022-11-20 22:35:10 UT (2.240s after notice) stacking 10x30s clear filter CCD exposures.

\n

We have not found optical transient within the error-box of the Neil Gehrels Swift Observatory position (RA 02h 45m 17.00s, Dec +43d 11m 49.0s - J2000).
Mag. upper limit R = 19.86+/-0.14

\n

Magnitudes were obtained from USNO-B1 catalogue and are not corrected for galactic extinction.

\n

Observations are consistent with previous upper limits (Swain et al., GCN 32956).

\n \n", "circularId": 32961, "createdOn": 1669015857000, "email": "s.leonini@iol.it", "subject": "GRB221120A: Montarrenti Observatory Upper Limit", "submitter": "Simone Leonini at Monarrenti Obs ", "eventId": "GRB 221120A" }