Photoelectric
observations:
taken with a
3-channel
photometer and the
60-cm telescope
at Mt. Suhora Observatory(Poland)
(EF
Boo,
SW Lac)
1.2-m telescope and CCD
camera
at Krioneri Astronomical Station (Greece)
(V417
Aql, YY CrB)
40-cm telescope and SBIG
CCD
camera at University of Athens Observatory
(Greece)
(AH Aur, DZ Psc, NN Vir)
50-cm and 70-cm telescopes
with
PMT photometer at SAAO (South Africa)
(UX Eri,
GR Vir)
50-cm
telescope and CCD
camera at Skibotn Astronomical Station (Norway)