Ritchey-Chretien GSO RC 406/3250 Carbon OTA View larger

GSO Ritchey-Chretien RC 406/3250 Carbon OTA

Ritchey-Chretien GSO 16 POUCES

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GSO Ritchey-Chretien RC 406/3250 Carbon OTA

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8'784.00 CHF tax incl.

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GSO Ritchey-Chretien RC 406/3250 Carbon OTA

Please note that this product desciption was translated by a computer. For more information please contact our english speaking customer service.

A dream telescope for astrophotography!

This Ritchey-Chretien optics with f / 8 gives very good pictures without the use of additional correctors and also permits the use of cameras with large sensors.

Your benefits:

  • Genuine RC-optics with hyperbolic primary and secondary mirror
  • Main mirror and secondary mirror made of quartz: no temperature-induced focus drift
  • The secondary mirror has a central marker for accurate collimation of the system
  • 99% coating with dielectric coating on primary and secondary mirror for a bright image
  • Large, flat and coma free field without corrector: ideal for astrophotography
  • Enough back focus for further optical accessories: 233mm from the tube back,127mm from the 2 "-Steckhülse the exodus

Thanks to the lightweight yet extremely rigid carbon spaceframe construction, the telescope is relatively easy. This way you can save on the mount. The "smaller" models of GSO RCs are therefore even more transportable. Further advantages of the open design, the rapid cooling time and the lower Tauprobleme against the Schmidt-Cassegrain optics.

Until recently belonged Ritchey-Chretien's most expensive telescopes. Thanks to GSO we can offer RC astrographs at affordable prices.



Aperture (mm) 406
Aperture ratio 8
tube diameter (mm) 565
Tube weight (kg) 37
Tube construction Wire-mesh tube
Tube length (mm) 1114
Tube material Carbon
Type Reflector
Coating Aluminium and silicon dioxide
Resolving capacity 0,28
Type of build Ritchey-Chretien
Focal length (mm) 3250
Limit value (mag) 14,8
Light gathering capacity 3360
Max. useful magnification 812


reflectivity 99
Secondary mirror diameter (mm) 191
Ventilation for central mirror yes
Secondary mirror material Quartz
Main mirror´s construction hyperbolic
Primary mirror - Material Quartz

Eyepiece holder

Connection ( to eyepiece) 3
Type of build Monorail
Gear reduction 1:10 Fine movement


Mounting type no mount
Type of build OTA

Included accessories

Prism rail Losmandy-Style
Eyepiece adaptor 2" - 3"


Series Carbon Truss Tube

Area of application

Astrophotography yes
Nature observation no

recommended for

Beginners no
Advanced no
Experienced amateurs yes