Photometric observations of pre-main sequence objects

To broaden the search and study stars in the early evolutionary phase, it is important to investigate pre-main sequence objects (Hα emission-line pre-main sequence stars, T Tauri variables etc.), especially if the investigation is the first long term photometric monitoring on a long timescale. Involvement of Austro-Croatian Telescope (ACT) in observations of PMS stars was discussed, as this telescope is also suitable for photometric UBVRI observations for a certain number of T Tauri stars investigated by co-authors previously using the data from other observatories.