Photoelectric observations:
taken with the
3-channel
photometer andthe
60-cm telescope
at Mt. Suhora Observatory
(AB And & DK Cyg)
50-cm telescope and CCD camera at
Cracow Observatory
(GZ
And)
50-cm telescope and CCD camera at
Skibotn Observatory (Norway)
(AO Cam & DN Cam)
AB And - UBVR