Orion 6-Inch F/4 Newtonian Astrograph Optical Tube Assembly (OTA)

Experience the wonders of the universe with our Orion 6-Inch F/4 Newtonian Astrograph OTA, a precision instrument designed for the avid astrophotographer. This telescope features a 150 mm parabolic mirror with a focal length of 600 mm, making it the perfect choice for capturing stunning images of nebular objects and deep sky wonders.

Key Features:

• Generous Aperture: 150 mm (6 inches) glass mirror for exceptional light gathering.
• Astrophotography Optimized: Fast f/4 focal ratio for short exposure times and brilliant images.
• High Efficiency Mirrors: 94% surface efficiency with low expansion glass optics.
• Precision Focusing: 2"/1.25" Crayford focuser with 10:1 microfocuser for precise adjustments.

Technical Specifications:

• Optical Design: Newtonian Reflector
• Mirror Figure: Precision-engineered rotary paraboloid
• Glass Material: Low thermal expansion B270 glass
• Reflecting Layer: Enhanced aluminum and silicon dioxide
• Purpose: Ideal for observing and photographing Deep Sky objects
• Lens Diameter: 150 mm
• Focal Length: 610 mm
• Aperture Ratio: F/4.1
• Resolution: 0.77 arcseconds
• Magnification: Minimum 21x, Maximum 177x, Theoretical Maximum 300x
• Stellar Range: Captures objects up to magnitude 13.5
• Secondary Mirror Obstruction: 63 mm (42% linear, 18% surface)
• Focuser: 2" Crayford with linear bearings and 10:1 transmission, 1.25" reduction
• Tube Material: Durable steel construction
• Tube Length: 571.5 mm
• Included Accessories: 8x50 straight optical finder and standard dovetail Vixen-style rail
• Weight: 5.75 kg

Warranty:

Enjoy peace of mind with our 12-month warranty, ensuring the quality and performance of your optical tube for a full year.