For the first time in my life I discovered supernova which was later confirmed by the spectrum https://www.wis-tns.org/object/2022bsi — SN 2022bsi is located in the galaxy NGC 5902 (in the Boötes constellation). More information about this:

On February 9, 2022, I found supernova candidate in the images of the CRTS (Catalina Real-Time Transient Survey). It was added https://www.wis-tns.org/object/2022bsi/discovery-cert to the TNS (Transient Name Server) on the same date.

On February 15, 2022, I obtained (by my request) photographs of this galaxy using remote telescope T21 (0.43-m f/6.8 reflector + CCD + f/4.5 focal reducer in Mayhill, New Mexico, USA) of iTelescope.Net, and I stacked these photos. This astronomical transient was clearly visible in the stacked image, indicating that it really exists; also on this date, information was added to the TNS about the detection of this SN candidate by ZTF_Bot1.

ZTF (Zwicky Transient Facility) light curve is available here https://lasair.roe.ac.uk/object/ZTF22aaajrdf/ It shows that the maximum brightness of about 19 mag was around February 20-21, 2022. On 2022-02-20 I obtained photos (with luminance filter, by my request) remotely using iTelescope T24 (0.61-m f/6.5 reflector + CCD in Sierra Remote Observatory at Auberry, California, USA). I am attaching the stacked image (9x300 sec. with mid time 11:46 UT).

On February 28, 2022, it was confirmed as a supernova and its type has been classified https://www.wis-tns.org/object/2022bsi/classification-cert as SN Ia-91bg-like according to the result of the analysis of the spectrum that was obtained at the Palomar 60-inch (1.5m) telescope.

The past (in August 2020) my discovery of transient (supernova candidate) was faint (fainter than 21 mag) AT 2020quo https://www.wis-tns.org/object/2020quo - I found it in the Pan-STARRS images during the International Asteroid Search Campaign (IASC) https://www.facebook.com/iasc.news/videos/494478235164682/  . But this has forever remained only in the status of an astronomical transient, because no one has obtained the spectrum of this object, but photometrically the existence of this has been confirmed by PS1_Bot1.

Also, in November 2019, I discovered two supernova candidates on digitized photographic plates: AT 1991bm https://www.wis-tns.org/object/1991bm in galaxy UGC 11180 and AT 1992bw https://www.wis-tns.org/object/1992bw in galaxy UGC 43, but they won't be confirmed as supernovae, so I am glad that the supernova SN 2022bsi has been confirmed by the spectrum.