Svbony Astronomical Telescope Eyepiece with Crosshair Darkfield Illumination Eyepiece Illuminated Guide Eyepiece Double Crosshair FOV 40 Degree 12.5mm

12.5mm PL eyepiece with red LED illuminated double crosshairs is suitable for measuring double star angle separation, position angle, planet diameter and moon crater diameter Steplessly adjust the brightness of the double crosshair. Turn on the switch on the side. Shut off and adjust brightness. Also adjust separate diopters to focus on both the stars and crosshairs at the same time Multi-coated 4-element PL design for superior color correction and sharpness. Provides excellent light transmission and clear images with faint stars Wide viewing angle and bright high contrast view, 40 degree apparent field of view with 11 mm eye relief Suitable for standard 1.25 inch telescope filters and other astronomical equipment The SVBONY illuminated eyepiece features a double crosshair. When using off-axis guides for star selection and guidance, they are suitable for precise polar alignment and long exposure guidance. integrated refractive correction Misalignment is easily detected. This displays the guide star and crosshairs with ideal sharpness and definition. Suitable for searching objects Helps locate and center stars. Also suitable for off-axis guiders or guide scopes, astrophotography guides. Compact size and metal construction Comes with an eyepiece cap - protects the eyepiece from dust and moisture Good image quality, good brightness control and reticle focus SVBONY 12.5mm illuminated sighting eyepiece, barrel diameter 1.25" SVBONY 12.5mm High Quality Focal Length Pros Eyepiece with Red LED Illuminated Double Crosshair Comes with an eyepiece cap - protects the eyepiece from dust and moisture Adjustable red LED light brightness control to illuminate crosshairs and maintain night vision Multi-coated 4-element PL design - superior color correction and sharpness Fully coated anti-reflective coating Fully coated optical lens with advanced achromatization to minimize internal reflections and maximize contrast, fully multi-coated 4-element gloss design for superior color correction and sharpness; fully multi-coated lens for bright views with 40 degree apparent field of view Dual crosshairs and integrated brightness level control SVBONY crosshair eyepiece can guide the stars quickly and accurately without any other aids. Adjustable brightness crosshair is suitable for long exposure photography guide Helps you observe targets quickly and accurately