The optical tube Skywatcher BKP 130/650 OTAW is a high-quality, next-generation optical tube for Newtonian-type telescopes, designed for astrophotography and advanced optical observations. With a primary parabolic mirror diameter of 130 mm and a focal length of 650 mm, this telescope is ideal for capturing deep-sky objects and offers detailed planetary observations.

• Optical Design: Parabolic Newtonian mirror
• Diameter: 130 mm
• Focal Length: 650 mm
• Focal Ratio: f/5
• Maximum Useful Magnification: About 260x
• Limiting Magnitude: Around 12.5 to 12.7
• Resolution Limit: Approximately 0.89 arcseconds

The optical tube is made of durable steel with a tube diameter of approximately 154-160 mm and a weight ranging from about 3.66 to 12.5 kilograms. It features a dual-speed 2" Crayford focuser (with 10:1 fine adjustment), ensuring precise focusing for astrophotography and visual work. Its design is shortened to improve main focus and compatibility with various mounts.

• Optical Tube Diameter: 1.25", commonly compatible with 10mm and 20mm eyepieces
• Finder scope: 6x30
• Suggested Uses: Suitable for moon, planets, star clusters, nebulae, and galaxies
• Portability: Moderate, facilitating transport and setup

The Skywatcher BKP 130/650 OTAW is versatile and suitable for both beginners and experienced astronomers seeking quality optics for imaging and visual astronomy, making it a solid choice for building or upgrading a telescope system.