The Askar 80ED telescope is an optical instrument with an aperture diameter of 80 mm, focal length of 560 mm and a focal ratio of f/7. The optical system is based on a two-element objective lens, in which one ED glass lens and one standard achromatic glass lens are used.

Technical parameters - optical tube

• aperture diameter: 80 mm
• focal length: 560 mm
• light intensity: f/7
• lens: doublet (including one ED lens)
• total length: 404 mm (with retracted anti-condensation cover)
• total length: 505 mm (with extended anti-condensation cover)
• focuser with 2" output, compatible with ZWO EAF
• tube weight: 1.7 kg
• total weight (with clamp and dovetail rail): 2 kg