Fig. 19: The end of the Saturn occultation by the Moon. The pictures from the beginning were too bad because the objective lens was decollimated. I had to collimate it during the eclipse. If the rear lens pair is just 1mm out of center then the picture is very unsharp and has color seams. — Nikon D200, William Optics Zenitstar d=105mm f=735mm, 2x Teleconverter, ISO 200, 1/13s, Falera observatory, 22 May 2007 Nikon D200; Δt=1/13 s; f=800 mm; f/7.1; ISO 200; 22 May 2007 21:34:48
