Officina Stellare Veloce RH 300 Astrograph OTA
The Officina Stellare Veloce RH 300 - Riccardi-Honders Astrograph is a premier, innovative, Officina Stellare exclusive! Just check out the primary Mangin mirror optical design, large front full aperture corrector lens and near zero expansion Sitall ceramic glass for the primary and secondary mirror. It even has two spaced elements for the rear group. We're talking about 300 mm of clear aperture, and an incredible ultra fast, wide field with an F/3 focal ratio and 900mm focal length. Add to that a flat 60 mm diameter field, with 6 micron maximum star spot size.
The materials Officinia Stellare uses in their premium quality telescopes are mostly aluminum and carbon fiber because of their lightness, their mechanical and thermal properties and for the optimal resistance to environmental conditions.
All the mechanical parts for the the Veloce OTA Astrograph are constructed with CNC computer assisted machines and from a whole aluminum blocks to guarantee the best possible precision. In addition, Officina Stellare has also provided carbon fiber components that are produced with strict specification and tolerances. Each section of this astrograph has been computer designed and simulated and optimized for the best structural performance, rigidity and lightness. The Veloce Astrograph's holding systems for the mirrors, the spider, rings and all the structural components, even the smallest, are CNC machined from a single block of special aluminum (6061/7075, Ergal and Anticorodal), stainless steel, titanium and brass. The astrograph's tubes are equipped with true carbon-graphite fiber obtained with the use of high vacuum process, allowing you as the observor to obtain the remarkable stability of the focus vs temperature changes and yet still maintain excellent and superior structural rigidity and lightness.
Officina Stellare is providing excellent care in constructing the rear holding cell of the Veloce astrograph's primary mirror. The rear cell for the primary mirror is figured to have the best rigidity/weight ratio and for the fastest possible thermal stabilization between the environment and mirror. The convection and thermal irradiation are greatly improved with the use of three high quality axial fans in the back of the astrograph's cell.
Officina Stellare has focused on simplifying the collimation between the Veloce astrograph's mirrors to resulting in a stable, efficient but easy to use system. Collimation is achieved on three points (the minimum required points to generate a single plane) that use special, great diameter preloaded bolts (one for each point). This results in a single hand use, simply turn the bolt left or right to move the mirror back and forth (no more complicated operations using push pull screws and locks) in a very intuitive way. Officina Stellare has made this one step easier! Finding the correct positions is a snap. The borders of the mirrors use an opaque, circular mask to avoid any undesired light scattering which always aids in the astrophotography experience. The light shields for both the primary and secondary mirrors on the Veloce are computer blueprinted and optimized to ensure illumination of the field is complete while still maintaining a complete protection from stray light. Inside the light shields there are also micro baffles that reduces, coupled with an opaque painting of the surfaces, to nearly zero any possible parasite stray light. In some cases and for particular applications, the light shield for the secondary mirror in the astrograph is made using a unique design to enable efficiency of the telescope while reducing the obstruction for the system. The back plate of Officina Stellare's telescopes comes standard with a system for adjusting the planarity of the focal plane in order to compensate for any small misalignment in the imaging train, always unwanted and annoying specially on today’s large CCD cameras.
|Focal Length||900 mm|
|Optical Design||Riccardi-Honders Astrograph|
|Optical Tube||Auto-thermal with BK7 glass|
|Optical Tube Length||425 mm|