Variable stars page





Variable star project of the public observatory Astrolab Iris







The 684 mm aperture Keller F4.1 Newtonian New Multi- Purpose Telescope (NMPT) of the public observatory AstroLAB IRIS, Zillebeke, Belgium.



The CCD detector assembly is a Santa Barbara Instrument Group (SBIG) STL 6303E operating at minus 20 degrees. A 4inch Wynne corrector feeds the CCD at a final focal ratio of 4.39, providing a nominal field of view of 20x30" . The 9μm physical pixels project to 0 62 and are read out binned to 3×3 pixels, i.e., 1 86 per combined pixel. The B, V, R and C filters are from Astrodon Photometrics.


Team from left to right : Ludwig Logie, Steve Rau, Siegfried Vanaverbeke and Franky Dubois.