Officina Stellare - Veloce Riccardi-Honders 250 f/5.6 Astrograph w/digital giant 95mm Finefocus and Rings Pair

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Officina Stellare's Veloce RH 250 Riccard-Honders Astrograph features a large front full aperture corrector lens with near zero expansion glass in a Mangin mirror optical design

SKU: OFF-VELRH250
Manufactured by:
Officina Stellare
 

Product Description

Officina Stellare's Veloce RH 250 Riccard-Honders Astrograph features a large front full aperture corrector lens with near zero expansion glass in a Mangin mirror optical design, allowing a 250mm aperture, f/5.6 focal ratio, 1400mm focal length, double stage split internal light baffle, and a 3.6 micro spot size at the field's edge. The exterior of the Veloce is mostly aluminum and carbon fiber making these telescopes more lightweight and thermally stable than they would be otherwise with different materials. The entire optical tube is CNC computer machined by using one whole block of aluminum to result in excellent precision. Even the smallest parts such as the holding systems for the mirrors are computer designed and machined for excellent quality.

Officina Stellare is providing excellent care is 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.

  • Special, thermo compensated material
  • Close tube design
  • Carbon fibre light shield
  • Unique and innovative cells design and exclusive double stage splitted internal light baffle
  • Back tip-tilt plate
  • Easy collimation system
  • Rings pair (no dovetail)
  • 95 mm (3.7") clear diameter FineFocus digital motor focuser
  • With handpaddle and USB interface
  • Cap cover








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Specifications

Name Officina Stellare - Veloce Riccardi-Honders 250 f/5.6 Astrograph w/digital giant 95mm Finefocus and Rings Pair
Manufacturer Officina Stellare
Model OFF-VELRH250
Dimensions LxHxW 248 (419 with light shield) L x 252 W x 282 H mm
Focal Length 600 mm
Focal Ratio f/3
Full Corrected Illuminated Field 42 mm (24x36 mm full format)
Linear Obstruction 55%
Optical Design Riccardi-Honders, flat field, improved design
Optical Tube Thermo compensated material
Primary Mirror 190 mm
RMS Polychromatic max 9 micron at field edge

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