GSO Dobson Deluxe 10" 254/1250 M-CRF

GSO Dobson 10" Deluxe 254/1250 M-CRF Reflector Telescope

The GSO Dobson 10" Deluxe 254/1250 M-CRF Reflector Telescope is a premium astronomical instrument designed for both novice and experienced stargazers. Featuring a high-quality rotary paraboloid main mirror with a diameter of 254 mm and a focal length of 1250 mm (f/4.9), this telescope provides exceptional optics. Crafted by the renowned GSO factory in Taiwan, it ensures limited diffraction for superior image quality, making it an excellent choice for observing a variety of celestial wonders including solar system bodies, star clusters, nebulae, and galaxies.

Key Features

• High-quality optics with rotary paraboloid main mirror
• 254 mm mirror diameter and 1250 mm focal length
• Manufactured by the renowned GSO factory in Taiwan
• Designed for a wide range of astronomical observations

Observation Possibilities

This telescope is a versatile tool for advanced visual observation, excelling under various conditions, particularly in dark rural skies. Users can explore a wide range of celestial objects including:

• Moon: Detailed craters and formations around the terminator
• Mercury and Venus: Phases and atmospheric features
• Mars: Ice caps, enhanced with colored filters
• Jupiter: Atmospheric stripes, Great Red Spot, and moons
• Saturn: Rings and belts, including Cassini and Encke divisions
• Uranus and Neptune: Distinctive shields
• Asteroids: Notable ones like Ceres and Vesta
• Comets: Icy travelers through the Solar System
• Stars: Double, multiple, and variable stars
• Deep Sky Objects: Including Messier, NGC, IC, and Caldwell catalogs

Additionally, this telescope is well-suited for observing and photographing airplanes at cruising altitudes.

Telescope Construction

Tube

The metal tube is robust, ensuring long-term collimation with precise mirror alignment. Its interior is coated with a matte, intense black finish to minimize glare and enhance contrast, providing clearer images of the Moon, planets, and bright stars.

Dobson Mounting

Featuring superior bearings in the azimuth axis, this mount allows for smooth and precise object positioning. Roller bearings ensure easy movement, while metal tracks prevent damage to wooden components. The altitude axis features a new bearing system for stability and easy guiding, with adjustable pressure knobs for maintaining balance when changing eyepieces.

Eyepiece Focuser

The Crayford microfocuser with a 1:10 gear ratio allows for precise focusing, accommodating both 2" and 1.25" eyepieces. It provides smooth and reliable movement, securing eyepieces with a brass clamp ring to avoid damage.

Cooling System for the Main Mirror

A 12V fan at the tube's end expedites the mirror's temperature equilibration with the environment, reducing waiting time for thermal stability.

Included Accessories

• Optical tube on Dobson mount with ball bearings
• Crayford focuser with 1:10 microfocuser
• 30 mm Erfle wide-angle eyepiece (70° AFOV) for 2" barrel
• 9 mm Plossl eyepiece (52° AFOV) for 1.25" barrel
• 8x50 finder scope with crosshair reticle
• Cooling fan for mirror equilibration
• 35 mm 2"/2" adapter with filter thread

Technical Specifications

• Optical System: Newtonian reflector
• Mirror Diameter: 254 mm
• Focal Length: 1250 mm
• Reflecting Surface Efficiency: 94%
• Focal Ratio: f/4.9
• Mirror Performance Accuracy: 1/8 λ
• Mirror Glass Type: BK7
• Resolving Power: 0.55 arc seconds
• Limiting Stellar Magnitude: 13th magnitude
• Maximum Useful Magnification: 500x
• Tube Diameter: 30.3 cm
• Tube Length: 121 cm
• Mounting Height: 64 cm
• Mounting Base Diameter: 54 cm
• Dimensions of the Pre-packed Telescope: 141 x 48.5 x 48.5 cm (tube), 64 x 14 x 14 cm (mount/stand)
• Weight: 28 kg (tube: 15.5 kg, mount: 12.5 kg)

Warranty

This telescope comes with a 2-year warranty, ensuring peace of mind and customer satisfaction.

In conclusion, the GSO Dobson 10" Deluxe 254/1250 M-CRF Reflector Telescope offers exceptional optics, ease of use, and a rich set of features for exploring the night sky. Its robust construction, precise mounting system, and included accessories make it an excellent choice for any astronomy enthusiast.