5-6 Element Apo Refractors

กล้องดูดาว Sharpstar Z4 100mm f/5.5 6-Element Apo Astrograph Telescope

• Sharpstar Z4 sextuplet refractor with 100mm aperture and f/5.5 focal ratio, ideal for wide-field deep sky imaging
• Six-element design ensures flat field across a 36mm image circle, while two ED elements virtually eliminate chromatic aberration
• Rotatable 3.4” focuser, M90-M54 and multiple threaded adapters, 2” adapter ring, and 1.25”-2” adapter
• Includes mounting rings, Vixen-style dovetail, carrying handle, and hard case

The Sharpstar Z4 astrograph incorporates a six-element optical design to deliver flat fields and sharp, color-free images from edge-to-edge. With a 100mm objective, two ED elements, and “3+3” optical layout, this f/5.6 scope has a focal length of 550mm and it’s ideal for capturing stunning wide-field images of the deep sky over a 36mm (APS-C) image circle.