Levenhuk Ra 150C Cassegrain OTA Optical Tube

The optics are made of quartz glass with aluminum and silicon dioxide coatingThe Levenhuk Ra 150C Cassegrain OTA is a Cassegrain reflector perfect for deep sky observation. It features an excellent optical design. The primary mirror is parabolic, while the secondary mirror is hyperbolic. Thanks to this, the transmitted image has no spherical distortion across the entire field of view up to maximum magnification. This optical tube without mount (OTA, Optical Tube Assembly) will be of great interest to the most demanding and experienced users.

The optics are made of quartz glass with aluminum and silicon dioxide coating. The optical system has a reflection coefficient of 92~96%. The Crayford dual-speed focuser suffers no backlash, allowing precise focus adjustment. The optical tube is made of steel, with high-quality internal blackening and two external attachment systems: one for fixing and one for mounting on a mount (dovetail plate). The Levenhuk Ra 150C Cassegrain OTA is compatible with almost all modern mounts.

Please note: mount, tripod, finder, and eyepieces are not included.

Features:

• Reflector with parabolic primary mirror and hyperbolic secondary mirror
• Aluminum and silicon dioxide coating with reflection coefficient 92~96%
• Complete absence of spherical aberration
• Excellent correction of astigmatism and field curvature
• Dual-speed Crayford focuser for quick and precise focus adjustment
• 8 internal deflectors with sharp edges
• Inner tube travel: 41 mm (laser-engraved millimeter scale)
• Backfocus distance: 157.2 mm (from the end of the 2' focuser clamp)

The kit includes:

• Telescope optical tube
• Finder base
• Dovetail plate
• 2' extension ring
• 1' extension ring
• Dust cover
• User manual and lifetime warranty