11th OPTICON Gaia Science Alerts Workshop 2020, Warszawa, Poland, 18 - 22 January 2021, pp.3
We preferred the Gaia20eld source as a newly outburst nova (Nova Cas 2020). We have taken spectroscopic
observations of the object with the TUG-RTT150 telescope especially in the nebular phase in order to study the
atmosphere model and follow the process. We reported the first results of this study in Atel 13998 (2000). In
the meantime, we carried out photometric observations of the object with the TUG-T100 telescope, one-second
exposures, binning 2, and without filter for about 9.5 hours since the source is very bright. We will present these
new photometric results in the Gaia workshop.