20mm SWA Illuminated Crosshair Telescope Eyepiece for Guided Astrophotography SV152, Adjustable

svbony 20 mm SWA illuminated crosshair eyepiece for telescopes. 20 mm focal length with a 70° SWA design and an exit-pupil distance of 16 mm (≈0.63 in). Optics are arranged in 4 groups with 5 elements, and the eyepiece fits a 1.25 in (31.7 mm) barrel. Designed for monocular/binocular use, it provides an illuminated crosshair reticle for precise aiming and observation.