What limits the precision of ground-based stellar photometry and positional measurements?

by Zhilyaev, B.E., Romanyuk, Ya.O., Verlyuk, I.A., Svyatogorov, O.A., Lovkaya, M.N.
Published 2005

Fast UBVRI colorimetry of stellar flares on EV Lacertae

by Zhilyaev, B., Romanyuk, Ya., Svyatogorov, O., Verlyuk, I., Alekseev, I., Lovkaya, M., Avgoloupis, S., Contadakis, M., Seiradakis, J., Antov, A., Konstantinova-Antova, R.
Published 2003