PUBLICATIONS OF THE ASTRONOMICAL OBSERVATORY OF BELGRADE 107, Page 57-62, https://doi.org/10.69646/14sbac08p
PPROCEEDINGS OF THE XIV SERBIAN-BULGARIAN ASTRONOMICAL CONFERENCE, Vrnjačka Banja, Serbia, September 23-27, 2024, Eds. Milan S. Dimitrijević, Evgeni Semkov, Zoran Simić, Goran Damljanović, Momchil Dechev
Published by: Astronomical Observatory, Volgina 7, 11060 Belgrade 38, Serbia

From October 2014 until now (about 10 years) we have done astronomical observations of the Gaia Alerts or Gaia Follow Up Network for Transients Objects (Gaia- FUN-TO). In 2013 we organized our local cooperation Serbian-Bulgarian mini-network telescopes to get better results. Also, the mentioned observations and investigations are in line with actual joint research SANU-BAN project Gaia astrometry and fast variable astronomical objects from 2023 to 2025; SANU-BAN are Serbian and Bulgarian Academies of Sciences. Now, there are 8 astronomical instruments at two sites in Bulgaria (at Belogradchik and Rozhen) and one site in Serbia (Astronomical Station Vidojevica - ASV). Usually, we have done ≈ 15 Gaia Alerts per year. Because of the COVID-problem, in 2021 we observed just 5 Gaia Alerts: Gaia19dke (11 times), Gaia21awo (1), Gaia21azb (13), Gaia21efs (1), and Gaia21ehu (1); ≈ 300 CCD images were done. At 2022 we did 7 Gaia Alerts: Gaia21cgt (1 time), Gaia22aeu (1), Gaia22atp (1), Gaia22btj (1), Gaia22btc (1), Gaia22dym (1), andGaia21brx (1); ≈ 70 images. During 2023, we did 12 Gaia Alerts: Gaia22ang (5 times),Gaia22dze (1), Gaia23bay (6), Gaia19dmj (2), Gaia21cgt (2), Gaia22eem (2), Gaia23afy (1), Gaia23cer (2), Gaia23cri (3), Gaia20cwd (1), Gaia23bbk (1), and Gaia23cvq (1); ≈ 300images were done using the 60 cm and 1.4 m ASV telescopes. We present some results here.