Geoptik Dobson telescope N 404/1815 DOB Nadirus 16" (53695)

The Nadirus Dobsonian telescope is a product of collaboration with trusted partners and the specialized design expertise of the Amadori study team. Every component of this telescope has been carefully designed and engineered, focusing on both technical precision and practical usability. With its sleek, curvy design, Nadirus offers a high-quality instrument proudly produced in Italy, showcasing the finest Italian craftsmanship and style. The use of premium materials and innovative technical solutions makes this telescope truly unique.

A defining feature of the Nadirus Dobsonian is its graphic motif, inspired by intersecting circles of varying diameters with radiused corners that enhance its profile. This design is repeated on the base structure to reduce weight while maintaining strength. The rotating base system incorporates a distinctive pattern reminiscent of fan blades, blending functionality with aesthetic appeal.

The structure is crafted from lamellar beech wood, ensuring stability while remaining lightweight. Special attention has been given to the upper cylinder housing, where the spider secondary mirror holder is constructed from birch plywood with crossed beams for exceptional strength and stability. The primary mirror cell is also made from birch plywood and features a 9-point floating support system with natural cork foam discs for optimal mirror performance. The entire structure is varnished for outdoor use to ensure durability in various conditions.

Numerous mechanical and technical details have been carefully studied to guarantee high quality and practicality, making this telescope an excellent choice for advanced astronomical observations.

Weight:

• Mirror box: 10.6 kg

• Rocker box: 8.4 kg

• Cage with focuser: 4 kg

• Tubes: 8 x 4.3 kg

Specifications

Optics:

• Type: Reflector

• Build Type: Newtonian

• Aperture: 404 mm

• Focal Length: 1815 mm

• Aperture Ratio (f/): f/4.5

• Resolving Capacity: 0.28 arcseconds

• Limit Value (Magnitude): 14.8 mag

• Light Gathering Capacity: 3330x compared to the human eye

• Maximum Useful Magnification: 808x

• Tube Construction: Truss Tube

• Tube Material: Aluminium

• Coating: SiO₂ (Silicon Dioxide)

• Reflector Reflectivity: 91%

• Main Mirror Construction: Parabolic

• Primary Mirror Material: BK7 glass

• Adjustable Mirrors: Yes

• Ventilation for Central Mirror: Yes

• Secondary Mirror Diameter: 88 mm

Focuser:

• Connection to Eyepiece: 2" diameter

• Build Type: Gear rack focuser with fine focusing (1:10 reduction)

Mount:

• Build Type: Dobsonian mount (manual operation)

• Mounting Type: Dobson-style rocker box

• GoTo Control System: No

Tripod Material and Type:

• Material: Wood

• Type: Rockerbox

Included Accessories:

• Finder Scope: Not included (optional accessory available)

• Eyepiece Adaptor: Compatible with both 2" and 1.25" eyepieces

Additional Features:

• Stray Light Protection: No

• Anti-glare Protector: Yes

General Information:

• Series: Nadirus Dobsonian telescopes

• Total Weight: 43.6 kg

• Eyepiece Height at Zenith: 1720 mm

Areas of Application:

• Moon & Planets: Yes

• Nebulae & Galaxies: Yes

• Nature Observation: No

• Astrophotography: Not recommended

• Sun Observation: No

Recommended For:

• Advanced Users: Yes

• Beginners: No

• Observatories: No