SVBONY SV198 50mm Guide Scope Finder Scope with Dual Helical Focuser Fine Focusing, Dual Use of Star Searching and Guiding with 45mm T2 Extension Tube

SVBONY SV198 50mm Guide Scope Finder Scope with Dual Helical Focuser Fine Focusing, Dual Use of Star Searching and Guiding with 45mm T2 Extension Tube

50mm aperture; large diameter objective lens collects more light; the target in the field of view is clearer; convenient to find a target in the sky Connect telescope camera; as a guide scope can be used with other accessories to easily achieve automatic star guidance Connect the eyepiece to use as a finderscope; present an inverted image with upside down and left and right opposites Fully multi-coated glass; multi layer broadband anti reflection coating double glue lens; well made edge coating; higher contrast and clearer field of view Fine focusing; focusing is done using a precise helical focuser with a millimeter scale and 12mm focus path; simple structure and convenient operation The 45mm T2 extension tube male thread M42*0.75; female thread M42*0.75; use with a guide camera 1.25" eyepiece holder with T2 thread; SV198 with position clamp screw; and tube rings with Vixen compatible dovetail 50mm Aperture The versatile 50mm aperture guide scope with a built-in Dual helical focuser. Helical Focuser Collar Helical focuser collar will not rotate attached auto guider devices during focus adjustments. Finder Scope Can also be used as a right-angle correct-image optical finder scope (Eyepieces and Prism Diagonal sold separately). Mini Guide Scope This compact lightweight mini guide scope perfect for guiding, searching or spotting. Specification: Model: SV198 Type of Optics: Achromat Refractor Lens Structure: 2-Elements/ 1Groups Tube material: Aluminium Aperture: 50mm / 1.97in Focal ratio: f/4.1 Focal Length: 206.6mm / 8.13in Coating: Fully multi-coated Blackened Lens Edges: Yes Focuser: Dual Helical + Telescopic Design Dual Helical Focuser Focusing stroke：11mm Focusing seat accuracy：0.1mm Rough Focusing stroke: 38mm Focusing seat accuracy: 1mm Connection to Eyepiece: 1.25" and T2 Base installation type：Vixen standard interface Color: White Tube diameter: 55.5mm Dew cap diameter: 58mm Total Length: 223mm Net Weight: Approx. 770g / 28.1oz Package Includes: 1X SV198 50mm f/4.1 mini Guide Scope 2X Ring bracket with a dovetail 6X Nylon-tipped thumbscrews 1X 1.25" Dust Cover 1X Lens Cover