Newton 250/1200 Black Diamond Dual Speed tube optique

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

Features:

• Aperture: 254mm (parabolic primary mirror in Pyrex)
• Focal ratio: f/4.8
• Crayford eyepiece holder 50.8/31.75mm with 1:10 focuser (Dual Speed)
• Thin supports for the secondary mirror (4 branches of 0.5mm)
• Included 9x50 straight achromatic finder
• Included LET 28mm eyepiece (50.8mm barrel)
• Mounting rings with Vixen type dovetail of 33cm
• Dimensions: 28.8cm (diameter) x 112cm (length)
• Weight: 16kg
• Robust metal construction

Advantages:

• Collects 57% more light than a 200mm 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 eyepiece holder, essential for astrophotography
• Thin supports for the secondary mirror to minimize diffraction and improve contrast
• Compatible with heavy accessories like reflex cameras for imaging

Compatibility:

• Compatible with mounts equipped with Vixen type 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 acclimatize to ambient temperature for optimal image quality

Included Items:

• 254mm f/4.8 Newtonian optical tube
• Crayford 50.8mm eyepiece holder with 31.75mm adapter
• Included 9x50 straight achromatic finder
• LET 28mm eyepiece (50.8mm barrel)
• Mounting rings with Vixen type dovetail of 33cm
• Piggyback support for camera