Tubo ottico Newton 250/1200 Black Diamond Dual Speed

Discover the universe in detail with Sky-Watcher's 254mm f/4.8 Newtonian optical tube. This powerful telescope offers exceptional light gathering capability and superior image quality, ideal for enthusiastic amateur astronomers who love deep sky observation and astrophotography.

Features:

• Aperature: 254mm (parabolic primary mirror in Pyrex)
• Focal length: 1200mm
• Focal ratio: f/4.8
• Crayford 50.8/31.75mm focuser with dual-speed focusing (1:10)
• Thin secondary mirror supports (4 branches of 0.5mm)
• Included 9x50 achromatic finder scope
• Included LET 28mm eyepiece (50.8mm threaded)
• Fixing clamps with Vixen-style dovetail bar (33cm long)
• Dimensions: 28.8cm (diameter) x 112cm (length)
• Weight: 16kg
• Robust metal construction

Advantages:

• Gathers 57% more light than a 200mm telescope for detailed deep sky observations
• Parabolic primary mirror to eliminate spherical aberrations and provide clear images
• Precise focusing with Crayford Dual Speed focuser, essential for astrophotography
• Thin secondary mirror supports to minimize diffraction and improve contrast
• Compatible with heavy accessories like reflex cameras for imaging

Compatibility:

• Compatible with mounts equipped with Vixen-style dovetail bars
• 31.75mm adapter included for use with a wide range of eyepieces

Tips for use:

• 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

Items included:

• Newton 254mm f/4.8 optical tube
• Crayford 50.8mm focuser with 31.75mm adapter
• 9x50 achromatic finder scope
• LET 28mm eyepiece (50.8mm threaded)
• Fixing clamps with Vixen-style dovetail bar (33cm long)
• Piggyback camera mount