SVBONY SV106 Guide Scope with Helical Focuser Finder and Guide Scope Multi-Use for Astronomical Telescope 50mm

50mm Guide scope will help guide you to capturing higher quality astrophotos. with its 50mm lens and smooth helical focuser the versatile 50mm multi-use guide scope with helical focuser is an ideal addition to any astrophotographers collection of gear Multi-use guide scope with helical focuser features a built-in helical focuser that allows precise focus adjustments with zero flexure for rigid performance. obtaining a clear sharply focused view of potential guide stars is quick and easy with this sturdy scope High power guide scope features a machined knurled ring to make fine focus adjustments nice and easy while a thumbscrew lets you lock-down the focuser in-place once adjustments are complete. the focuser boasts 8 mm of precise helical focus travel plus telescoping drawtube housing provides up to 30 mm of additional back-travel if needed for your particular autoguider device This complete guide scope comes with two heavy-duty guide scope rings and a 3.5″ long 1.18″wide dovetail mounting bar which is compatible with dovetail finder scope bases for easy attachment. the dovetail bar features five threaded through-sockets for versatile attachment options. the included guide scope rings feature six metal thumbscrews for precise aiming The quick guide scope with helical focuser also features male t-threads on the focuser collar for secure threaded attachment of guide cameras equipped with female t-threads you can use this handy scope as a deluxe straight-through 50mm finder by inserting an optional 1.25″ eyepiece sold separately. A practical benefit of this is that prior to guiding you can insert an eyepiece into the guide scope and easily align the guide scope with your main imaging telescope. Then remove the eyepiece and attach your autoguider camera NOTE: The fixed-orientation focuser mechanism will not rotate inserted autoguider cameras or eyepieces when focus adjustments are made. The helical focuser simply moves the attached device inwards or outwards while maintaining its orientation. This convenient feature means your field of potential guide stars will not rotate as focus is adjusted further increasing ease of use Features: Versatile 50mm aperture Guide Scope with a built-in helical focuser for precise focusing of potential guide stars Designed for use with the guider CCD astronomy camera or eyepiece Helical focuser collar will not rotate attached autoguider devices during focus adjustments Used as a deluxe straight-through finder scope with optional 1.25″ eyepieces installed eyepieces sold separately Specification: Type of Telescope: Achromatic Refractor Lens: Cemented Tube material: Aluminum Alloy Aperture: 50mm / 1.97in Focal Length: 190mm / 7.48in Focal Ratio: F4 Coating: Fully multi-coated Best for imaging: Deep sky User level: Intermediate Rough Focusing Range: 30mm Focuser: Helical Focuser with 8 mm Travel Connection to eyepiece: 1.25inch Tube diameter: 54.5mm Dewcap diameter: 61mm Total Length: 240mm Included accessories: Tube Rings and Dovetail Rail Package Includes: 50mm Primary Mirror Guiding Bracket w/ 89mm Dovetail Plate 1.25inch Helical Focuser 6PCS Metal Thumbscrews

• Precise focus;Versatile 60mm aperture Guide Scope with a built-in helical focuser for precise focusing of potential guide stars
• Adjustable-aim dovetail guide scope bracket installs on virtually any astrophotography telescope quickly and easily
• Type of Telescope: Achromatic Refractor