All new, a unique, RotoLock high-quality fully multi-coated WO 50mm f/4 Guiding scope that fits perfectly on your William Optics scope and other telescopes.
The tube diameter is 54mm with a 58mm dew shield.
• Guiding scope gives sharpest image and straight through viewing with an inverted image.
• High-quality 50 mm objective.
• 5.7 deg field of view.
Nice Fit & Finish
• White Powder painted with 1.25" color RotoLock.
•Perfectly suited for William Optics or other refractors.
•Guide Scope Weight: 460g