Alstar Guide Scope Finder Scope 50mm, Double Helical Focuser Guidescope

About this item

• Precision Helical Focuser System: Features a built-in helical focuser with brass compression ring and dual thumbscrews for ultra-fine adjustments; Provides 40mm total focus range including 10mm micro-focusing capability; complemented by a scalable drawtube for extremely precise focus control; Ensures zero flexure during astrophotography sessions with secure locking mechanism
• Universal Compatibility & Easy Installation: Includes Synta-style dovetail mounting plate and pipe clamps for quick attachment to virtually any telescope; The adjustable dovetail weight balances your astrophotography setup perfectly; Compact design allows convenient storage in accessory cases between uses; making it ideal for mobile observing sessions
• High-Performance Optical System: Boasts 200mm focal length with fully multi-coated lenses for bright; wide-field views; Specifically designed for telescopes up to 1500mm focal length; putting numerous guide stars within view; The 50mm aperture captures ample light for reliable guiding and easy object location during visual observations
• Durable Construction & Professional Features: Constructed with sturdy black anodized aluminum housing for maximum durability; Features milled knurled rings for precise fine-focus adjustments and prevents camera/eyepiece rotation; The robust metal build ensures long-term reliability under various observing conditions while maintaining lightweight portability
• Multi-Purpose Guide Scope Application: Serves as both finder scope and guide scope for astronomical telescopes; Enables quick object locating and guide star acquisition with comfortable large viewfinder; Perfect for astrophotography guiding and visual observation; significantly reducing time spent searching for celestial objects during extended imaging sessions