GSO Dobson telescope N 300/1500 DOB (45524)

The GSO 12" (300mm) Dobsonian Telescope is a high-quality Newtonian reflector designed for deep-sky observations, offering exceptional optical performance at a reasonable price. With its large 300mm aperture and 1500mm focal length, this telescope delivers breathtaking views of nebulae, galaxies, and planetary details. While the solid-tube design requires a larger vehicle for transport, the observing experience it provides is truly unforgettable, showcasing intricate details reminiscent of astrophotography.

Advantages at a Glance:

• High-quality optics: Parabolic primary mirror with a 300mm aperture and 1500mm focal length.

• Enhanced reflectivity: 94% reflective coating for brighter, high-contrast images.

• Advanced focuser: 2" Crayford focuser with smooth adjustments and a 1.25" reducer for precise focusing.

• Durable construction: Robust metal tube and adjustable mirror mounts ensure long-term reliability.

• Efficient cooling: Active primary mirror ventilation accelerates temperature adaptation.

• Upgradability: Compatible with accessories for astrophotography, filters, eyepieces, and more.

Applications:
This telescope is ideal for observing the Moon, planets, nebulae, and galaxies but is not recommended for nature observation or astrophotography without additional accessories.

Outstanding Optical Performance and Contrast:
The GSO Dobsonian delivers exceptional contrast and sharpness due to its optimized secondary mirror and thin spider vanes, minimizing obstruction and improving image quality. Nebulae and galaxies appear brighter compared to similar telescopes of the same aperture, while planetary details such as the Cassini Division in Saturn's rings or Jupiter's Great Red Spot are clearly visible.

Ease of Use and Setup:
The GSO Dobsonian is straightforward to assemble and use, making it suitable even for beginners. Simply set up the rocker box, attach the tube via the altitude bearings, tighten the springs, and you're ready to start observing.

Smooth Movement and Manual Tracking:
The telescope features ball bearings on the horizontal axis for effortless adjustment and precise tracking of celestial objects. The altitude axis includes tension springs that provide controlled counter-pressure during slewing to prevent objects from slipping out of view when changing eyepieces.

Active Primary Mirror Ventilation:
A built-in fan behind the primary mirror ensures faster cooling by circulating air over the mirror's surface, allowing the telescope to reach thermal equilibrium quickly for optimal performance.

Enhanced Observing Experience with Premium Optics and Mechanics:
The GSO 12" Dobsonian combines excellent optical quality, robust mechanics, and user-friendly features to deliver an outstanding astronomical experience for both beginners and advanced users seeking detailed views of celestial objects.

Specifications:

• Optics Type: Reflector (Newtonian).

• Aperture: 300mm.

• Focal Length: 1500mm (f/5).

• Resolving Capacity: 0.38 arcseconds.

• Limit Magnitude: 14.2 mag.

• Light Gathering Capacity: 1840x compared to the human eye.

• Maximum Useful Magnification: 600x.

Reflector Features:

• Primary Mirror Material: BK7 glass with parabolic construction.

• Secondary Mirror Obstruction: 23%.

• Reflectivity: 94%.

Focuser Details:

• Type: Crayford focuser (2") with smooth focusing for high magnifications.

Mount Details:

• Type: Dobsonian rocker box made of wood for stable operation.

Included Accessories:

• Eyepiece: Super Plössl 25mm (1.25").

• Finder Scope: 8x50 finder for easy object location.

• Miscellaneous Accessory: 1.25" extender.

General Information:

• Tube Construction Material: Steel.

• Tube Weight: 19.5kg.

• Total Weight (including mount): 33kg.