The Sky-Watcher 250mm f/4 optical tube is a Newtonian telescope designed for astrophotographers and amateur astronomers. With a 254mm primary mirror, it offers superior brightness compared to smaller telescopes and allows for detailed observation of deep sky objects.

Features:

• Optical formula: Newton
• Parabolic primary mirror
• Focal length: 1000mm
• Aperture ratio: f/4
• Mirror material: Pyrex
• Resolution power: 0.45"
• Limit magnitude: 14.1
• Construction: Metal
• Dimensions: 28cm x 92.5cm
• Weight: 14.6kg

Included Equipment:

• Sky-Watcher 254mm f/4 optical tube
• Sky-Watcher 50.8mm Crayford focuser with microfocuser (dual speed 1:10) and 31.75mm adapter
• Vixen type dovetail 33cm
• Two mounting rings
• Kodak-threaded Piggyback mount for camera on top of one of the mounting rings
• 9x50 straight finder

Advantages:

• Allows detailed observation of deep sky objects
• Designed for astrophotographers and amateur astronomers
• Equipped with a microfocuser for precise focusing