Many of the images in this site were taken using Takahashi Newtonian style optical tubes. The optical tube pictured above is a Takahashi Epsilon 160 which is attached to an Astro-Physics 1200 GTO mount.
I now use this optical tube with a Santa Barbara Instrument Group [SBIG] STL-11000M camera. I previously used this optical tube with a SBIG ST-2000XM CCD camera and also with 35 mm film.
The optical tube pictured above is a Takahashi MT-200 and is shown in the configuration I use for CCD imaging. The MT-200 has an 8" primary mirror and a native focal length of 1200 mm with a f-ratio of 6.0. I typically use the SBIG ST-10XME CCD camera with this optical tube.
My long focal length instrument is a 10" f/9 Ritchey-Chretien from RC Optical Systems in Flagstaff, Arizona. I mostly use this instrument at the native f/9 focal ratio and use an Santa Barbara Instruments Group ST-10XME for imaging.