The design was created in 1935 by engineer Mark U. Serrurier when he was working on the Mount Palomar 200 in (5.1 m) Hale telescope. 0.0 (0) 0 Orders . 0.0 (0) 0 Orders. I have an APO triplet of Roger’s that is a prized possession. A Six-inch f/5 Telescope offers the greatest performance available in a small package, whether the objects of interest are star clusters, nebulae and galaxies, or the moon, sun, and planets. US $1,406.17. We are your source for astronomy telescopes, eyepieces, astroimaging cameras, and more! Some time ago my friend Bill Lofquist bought a dobsonian telescope from Roger Ceragioli. Celestron C8-A XLT Narrow 8" Schmidt Cassegrain OTA Optical Tube Assembly CGE/CG5 Professional. Thus, I was motivated to use channel stock. QHY16200 APS-H MONO format astronomy CCD camera. Mechanically the scope had a few problems. The design solves the problem of truss flexing by supporting the primary objective mirror and the secondary mirror by two sets of opposing trusses before and after the declination pivot. A Serrurier truss is used in telescope tube assembly construction. Browse an extensive selection of astronomy equipment at Telescopes.net. Introducing the newly redesigned 6-Inch Truss Tube Telescope by Stargazer Steve! The carbon-fibre tubes are stiff, light and especially thermally stable - another reason why there is no focus drift. 0.0 (0) 0 Orders. Stainless steel ball and socket hardware connects the truss tubes to the telescope's three large CNC-machined aluminum support plates. The mirror is gorgeous, as is typical for Roger who is one of the best opticians I know. US $2,999.99. For large Dobsonians this has worked well and suppliers make end fittings so the tubes can be attached to the rocker boxes and upper end tube, but for smaller telescopes there are no end clamps available that work at all well and the ones I found were expensive. SVBONY 2'' SV20/SV48 Refractor Astronomy Professional Telescope … Smaller telescopes tend to use tubes and larger telescopes trusses - we shall look at each in turn. Carbon-fibre truss-tube design OTA Most professional telescopes use a truss-tube design and this telescope enjoys exactly the same advantages. EXPLORE SCIENTIFIC GENERATION II 16inch DOB 406mm f/4.5 Truss Tube Dobsonian Telescope. Natural ventilation is better with a truss-tube design and prevents the system from developing its own microclimate. tubes. The tube or trusses of a telescope must perform the task of holding the optical components at the correct separation and at the correct relative alignment, regardless of the orientation of the telescope on the sky. Typically, Surrier truss type telescopes use round tubes. The focuser on the Orion 10" f/8 Truss Tube Ritchey-Chrétien Astrograph is a masterpiece of rigidity and precision. US $3,999.00. Roger had built the ‘scope to provide a home for a beautiful 12.5″ f/5 mirror he had made.