Note: This kit includes both primary and secondary mirrors, focuser and Telrad reflex finder.
The Geoptik Nadirus 12" complete 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 complete kit includes a and . The mirrors are made from BK-7 glass with highly reflective aluminium coating and a protective coating of silicon oxide. GSO guarantees diffraction limited performance with a typical surface quality of 1/16 wave or better.
Also included in the complete kit is a high quality with 11:1 fine focus control and integrated drawtube extension, plus the .
Note: the mirrors are not pre-installed. For attaching the secondary mirror, we recommend using . The kit does not include the primary mirror fan.
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.
Note: As the Nadirus is a handmade object using real wood (not cheap chipboard), there may be inconsistencies in the finish, colour and grain pattern of the wooden parts. Consequently, such minor imperfections are normal and will not affect the longevity or function of the telescope.
Specifications
| Type | Truss tube Dobsonian |
|---|---|
| Optical design | Newtonian |
| Clear aperture | 304 mm (12") |
| Focal length | 1500 mm |
| Focal ratio | f/5 |
| Mount type | Dobsonian |
| 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 | 23.6 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 | 10A202 (complete kit) |
Included items
- 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
- GSO 12" f/5 parabolic primary mirror
- GSO 70mm elliptical secondary mirror
- 2" rack & pinion focuser
- Telrad reflex finder with mounting base
For all orders exceeding a value of 100USD shipping is offered for free.
Returns will be accepted for up to 10 days of Customer’s receipt or tracking number on unworn items. You, as a Customer, are obliged to inform us via email before you return the item.
Otherwise, standard shipping charges apply. Check out our delivery Terms & Conditions for more details.
