Levenhuk Ra 150C Advanced Cassegrain Reflector Optical Tube Assembly (OTA)

The Levenhuk Ra 150C Advanced Cassegrain Reflector OTA is an exceptional optical instrument designed for experienced astronomers and deep-sky enthusiasts. Its sophisticated design and superior optical components make it a standout choice for those seeking clarity and precision in their astronomical observations.

Key Features

• Premium Optical Design: Equipped with a paraboloid primary mirror and a hyperboloid secondary mirror, ensuring images free from spherical distortion.
• High Reflectivity: Quartz glass optics coated with aluminum and silicon dioxide deliver a reflectivity index between 92~96%.
• Precision Focusing: Dual-speed Crayford focuser minimizes backlash and allows for precise and quick focus adjustments.
• Superior Image Correction: Provides excellent correction of astigmatism and field curvature.
• Robust Construction: The steel optical tube includes high-quality internal blackening and external mounts compatible with modern systems.

Additional Features

• 8 internal knife-edge baffles for improved image sharpness.
• 41mm drawtube travel with a laser-engraved millimeter scale for precise measurements.
• Backfocus distance of 157.2mm from the end of the 2" focuser collar.

Please note: The mount, tripod, finder, and eyepieces are not included with this OTA.

Included in the Box

• Telescope optical tube
• Finder scope base
• Dovetail plate
• 2" Extension ring
• 1" Extension ring
• Dust cover
• User manual and lifetime warranty

Specifications

• Product ID: 77654
• Brand: Levenhuk, Inc., USA
• Warranty: Lifetime
• EAN: 5905555002590
• Package Size (LxWxH): 66x33x30 cm
• Shipping Weight: 8.16 kg
• Optical Design: Reflector
• Optical Scheme: Cassegrain
• Optics Material: Quartz
• Optics Coating: Aluminum and silicon dioxide
• Primary Mirror Diameter (Aperture): 153 mm
• Secondary Mirror Diameter: 50 mm
• Secondary Mirror Obstruction: 58 mm
• Lens (Mirror) Shape: Primary: Paraboloid; Secondary: Hyperboloid
• Focal Length: 1836 mm
• Highest Practical Power: 306x
• Aperture Ratio: f/12
• Resolution Threshold: 0.76 arcseconds
• Limiting Stellar Magnitude: 13.6
• Eyepiece Barrel Diameter: 1.25/2 inches
• Objective Lens Obstruction: By area: 15%; By diameter: 38%
• Focuser: 2" Crayford, dual-speed
• Telescope Control: Manual
• Operating Temperature Range: -5°C to +35°C
• Optical Tube Mounting Mode: Dovetail plate
• Dovetail Mount: ✓
• Optical Tube Material: Steel
• User Level: Experienced users, professionals
• Assembly and Installation Difficulty: Easy
• Observed Object: Deep-sky objects