Sky-Watcher 300mm f/4 Dual Speed Newtonian Optical Tube for Astronomy - Sky-Watcher

Explore the universe with the 300mm f/4 Black Diamond Dual Speed Parabolic Newtonian telescope from Sky-Watcher. Designed for amateur astronomers passionate about deep sky observation and astrophotography, this powerful telescope offers exceptional image quality and unmatched performance.

Features:

• Aperture: 300mm (Pyrex parabolic primary mirror)
• Focal length: 1200mm
• Focal ratio: f/4
• Crayford 50.8/31.75mm focuser with 1:10 dual speed fine focusing
• Thin secondary mirror supports (4 branches of 0.5mm)
• Included 9x50 straight-through achromatic finder
• Mounting rings with Losmandy style dovetail
• Dimensions: 35cm (diameter) x 115cm (length)
• Weight: 22kg
• Sturdy metal construction

Advantages:

• Collects 44% more light than a 250mm telescope for detailed deep sky observations
• f/4 focal ratio for reduced exposure times in astrophotography and a very wide field of view
• Precise focusing thanks to the Crayford Dual Speed focuser, essential for astronomical imaging
• Thin secondary mirror supports to minimize diffraction and improve contrast
• Shorter tube for better maneuverability and less wind resistance

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, using a coma corrector is recommended
• Allow the telescope to acclimate to the ambient temperature for optimal image quality

Items included:

• 300mm f/4 Newtonian optical tube
• Crayford 50.8mm focuser with 31.75mm adapter
• Included 9x50 straight-through achromatic finder
• Mounting rings with Losmandy style dovetail
• Piggyback mount for camera