Astronomy Specialist



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Note: This kit does not include the primary and secondary mirror, the focuser or the finderscope.


The Geoptik Nadirus 12" kit is a high quality Italian-designed and manufactured Dobsonian telescope made from lamellar beech and birch, resulting in a lightweight and stable structure. The entire structure is coated for outdoor use.

The upper tube housing is made of birch plywood giving unique strength and stability to the secondary mirror spider. The primary mirror cell is made of birch plywood with a support system where the 9-point floating mirror rests on discs of natural cork foam. Teflon strips on both altitude and azimuth make for incredibly smooth operation.

Every part of the telescope has been designed and engineered taking into account a variety of technical and practical aspects. The Italian style, quality of materials and engineering considerations makes it absolutely unique and one of the best Dobsonian kits on the market.


Type Truss tube Dobsonian
Optical design
Clear aperture
304 mm (12")
Focal length
1500 mm
Focal ratio
Mount type
Primary cell
Floating 9-point machined aluminium
Secondary holder High precision aluminium assembly
Alignment Manual
Altitude bearing radius
480 mm
Eyepiece height (at zenith) 1420 mm
Total assembled weight 16 kg
Dimensions - Rocker box 320 x 45 x 45 mm (with circular plate), 5.2 kg
Dimensions - Mirror box 425 x 425 x 275 mm, 7.13 kg
Dimensions - Upper assembly 345 x 200 mm, 2.8 kg
Dimension - Carton box 500 x 500 x 500 mm
SKU 10A003



  • Rocker box
  • Circular base plate
  • Mirror box
  • Primary mirror cell
  • Altitude bearing x 2
  • Knobs for altitude bearing x 4
  • 20mm trusses x 8
  • Bolts & washers for tubes x 4 + 4
  • Bag for tubes
  • Secondary cage
  • Secondary mirror holder & spider
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