203mm (8") Astrograph Telescope
203mm (8") Astrograph Telescope
203mm (8") Astrograph Telescope
203mm (8") Astrograph Telescope
203mm (8") Astrograph Telescope
203mm (8") Astrograph Telescope

203mm (8") Astrograph Telescope

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 This telescope package is ideal for astrophotography. 


  • Camera not included. Add your choice of astronomical camera or mount your own DSLR camera.
  • This item is not normally held in stock, it is ordered from our supplier and may take some time to deliver. Please contact us if you'd like to discuss availability.

The telescope

Ritchey-Chretiens deliver images with very little distortion. They have a flat field of view, so objects are in sharp focus right to the edge of the image. The image is coma-free, so stars at the edge of the field of view remain perfectly round. And there is no false colour because they use only mirrors with no correcting lens.

The 8" f/8 design provides enough aperture and a long enough focal length to give good image scale. It is ideal for smaller deep sky objects such as planetary nebulae, galaxies and small globular clusters.

The carbon fibre tube has very high strength and rigidity, ideal for long exposure photography.

GSO mirrors are made from optical quality quartz glass and are limited only by diffraction, which means they achieve the theoretical maximum resolution possible for the size of the mirror. They are machined and polished to better than 1/12 wavelength, sometimes 1/16 wavelength, which is considerably better than the industry norm. Each mirror is individually tested and hand-corrected if necessary after production, with final testing by laser interferometry.

The open tube and quartz mirror enables the telescope to cool quickly, with virtually no problems with dew. A computer-optimised baffle system minimises any stray light in the tube.

The mount

This CEM25P mount uses up to 60% less GOTO power consumption than other mounts in category.

The "Z" design mount puts the weight of the payload at the centre of gravity allowing for greater natural stability. Given its payload capacity, this means the "Z" designed mount is unusually light. A nice benefit when setting up at a remote site. Other features include an adjustable counterweight bar to prevent obstruction with the tripod. And polar aligning is quick and easy using the iPolar electronic polar scope.

The CEM25 is equipped with the latest advanced GOTONOVA GOTO technology, making it one of the most powerful and accurate GOTO mounts available. Its database includes over 59,000 objects. The Go2Nova Hand Controller is intuitive to use and its large 4-line LCD screen simplifies the process of setting telescopes and locating objects.

The mount comes in an aluminium hard case for easy transporting.

Optical designRitchey-Chretien
Primary mirror: 8" (203 mm)
Focal length: 1624 mm  
Focal ratio: f/8
Resolution: 0.57 arc seconds
Focuser: Crayford 2" Linear Bearing 10:1 micro edge
Finderscope: 8x50
Tube length: 580 mm
Weight of tube: 7 kg


  • Polar electronic polar scope, for easy polar alignment 
  • StarFi WiFi Connector. 
  • 8x50 finder scope 
  • 2" Quartz Diagonal 
  • 30mm Superview Camera Projection Lens
  • 0.75x focal reducer for RC
  • Tripod Carry Bag
  • extra 4.5kg counterweight 
  • 2" Crayford Linear Bearing 10:1 micro edge focuser
  • One Vixen (V style) and one Losmandy (D style) dovetail bar (top and bottom)
  • Two 25mm extension tubes 
  • One 50mm extension tube