Photometric and colorimetric studies of target objects using small and medium-size telescopes

Abstract

We report on follow-up studies of transient events and objects, which have been conducted in recent years using ground-based optical observations. BVRI photometry has been performed with small and medium-sized telescopes located in Europe and North America. The purpose of these studies, which are mainly focused on objects of unknown nature, is to reveal features of 206 V. Godunova et al.their variability that are critical for classifying the transients and understanding their evolution.We present here some results obtained from long-term monitoring of transients Gaia18aes, Gaia19bpg, as well as the quasar 4C +21.35.