Sky-Watcher 300mm f/5 Newtonian Tube for astronomy with Dual Speed microfocuser - Sky-Watcher

Discover the universe with the 300mm f/5 Black Diamond Dual Speed parabolic Newtonian optical tube from Sky-Watcher. This powerful telescope, the largest in the Sky-Watcher Newton range, is designed for astronomy enthusiasts eager to observe and photograph deep-sky objects with exceptional accuracy. With its 300mm primary mirror, it collects 44% more light than a 250mm telescope, offering rich, detailed observations.

Features:

• Aperture: 300mm (Pyrex parabolic primary mirror)
• Focal length: 1500mm
• Focal ratio: f/5
• Focuser: Crayford 50.8/31.75mm with 1:10 fine focus (Dual Speed)
• Fine secondary mirror supports: 4 branches of 0.5mm
• 9x50 achromatic straight finder included
• LET 28mm eyepiece (50.8mm barrel) included
• Mounting rings with Losmandy style dovetail
• Dimensions: 35.5cm (diameter) x 145cm (length)
• Weight: 22kg
• Robust metal construction

Advantages:

• Collects 44% more light than a 250mm telescope for detailed deep-sky observations
• Parabolic primary mirror to eliminate spherical aberrations and provide sharp images
• Precise focusing thanks to the Crayford Dual Speed focuser, essential for astrophotography
• Fine secondary mirror supports to minimize diffraction and improve contrast
• Compatible with heavy accessories such as DSLR cameras for imaging

Compatibility:

• Compatible with mounts equipped with a Losmandy style dovetail
• 31.75mm adapter included to use a wide range of eyepieces

Usage tips:

• For optimal results in astrophotography, the use of a coma corrector is recommended
• Allow the telescope to acclimate to ambient temperature for optimal image quality

Included items:

• 300mm f/5 Newtonian optical tube
• Crayford 50.8mm focuser with 31.75mm adapter
• 9x50 achromatic straight finder
• LET 28mm eyepiece (50.8mm barrel)
• Mounting rings with Losmandy style dovetail
• Piggyback mount for camera