Finder Scope, Guide Scope with Helical Focuser Finder and SWA Illuminated Eyepiece Multi-Use for Astronomical Telescope(F9177B-W9115A)

20mm SWA 70 Degrees Illuminated Single Crosshair EyepieceThis eyepiece for the following applications:- setting the exact alignment of the telescope and finder- polar alignment (by drift method)- an invaluable aid to centering guide stars and astrophotography target objects- the perfect eyepiece for alignment of computerized GoTo systemsSWA (Super Wide Angle) 70°The illuminated 1.25" 20mm reticle eyepiece with a 70°apparent field of view, is designed for refining the alignment and pointing accuracy of your goto telescope, helping to find your target star easily and do very precise centering of the alignment stars. And reticle eyepiece is essential for precise polar alignment when doing long exposure astrophotography.30/35mm Back FocuserThe focuser (Stroke 30/35mm) helps you quickly lock the stars you want to see. The focuser simply moves the attached device inwards or outwards while maintaining its orientation, which means your field of potential guide stars will not rotate as focus is adjusted, further increasing ease of use.==========High-concerned chemical : NoneLens Diameter : 50mmTube Travel : 240mmFocus Type : F4Focal Length : 190mm / 240mmMaterial : Aluminum AlloyModel Number : SV106Type : MonocularTube diameter : 54.5mm/66mmTotal Length : 240mm/270mmNet Weight 1 : 930gNet Weight 2 : 1210gCoating : Fully multi-coatedRough Focusing Range : Helical Focuser with 8 mm Travel

• PRECISE STAR LOCATION: This finder scope is an essential telescope accessory, helping you quickly and accurately locate celestial objects. With premium optical design, it delivers clear field of view, greatly improving the efficiency of astronomical observation for beginners and enthusiasts
• DUAL FUNCTION: GUIDE & FINDER SCOPE: Combines guide scope and finder functions, supporting celestial positioning and precise guiding for astronomical telescope observation
• HELICAL FOCUSER MECHANISM: Features helical focuser for smooth and accurate focusing adjustments, enhancing clarity when targeting stars or deep-space objects
• SWA ILLUMINATED EYEPIECE: Equips SWA (Super Wide Angle) illuminated eyepiece, expanding field of view and improving visibility in low-light conditions
• MULTI-USE ASTRONOMICAL ACCESSORY: Designed for versatile use, fitting astronomical telescopes for guiding, star finding, and auxiliary observation tasks
• UNIVERSAL TELESCOPE COMPATIBILITY: Fits most standard astronomical telescopes, acting as a practical accessory for daily astronomic observation needs