The Askar 60F is an OTA with an aperture of 60mm, a focal length of 408mm, and a native focal ratio of F/6.8, designed for astronomy enthusiasts who prioritize portability and high image quality. The Askar 60F features a quadruplet optical lens design (three front elements and one rear element), including one piece of ED glass, which reduces chromatic aberration. The Askar 60F supports 44mm full-frame imaging with great performance of the surrounding star points. With its built-in field flattener, the Askar 60F eliminates the need for an additional flattener and complex back-focus calculations. Simply attach your camera, achieve focus, and you’re ready to capture images, making astrophotography simpler and more enjoyable. The Askar 60F OTA weighs only 2.5kg, and the gross weight is 3kg (including the tube rings and dovetail plate). It is compact and lightweight, making it easy to carry for observing or astrophotography—wherever your exploration takes you. The Askar 60F is designed for both visual observation and photography. It comes with a photographic extension tube featuring a built-in 2" filter thread and has M48×0.75 and M54×0.75 adapters, making it compatible with DSLRs and astronomical cameras for quick connection and instant shooting. The mechanical design of the Askar 60F minimizes hidden usage costs and ensures a smooth experience. The Askar 60F features a retractable dew shield, further reducing overall length and enhancing portability. The inside of the tube is pasted with matting felt to eliminate stray light better, while the exterior sports a sleek blue-and-white color scheme with high-quality CNC machining and paint finish. Specifications Aperture Size 60mm Focal Length 408mm Focal Ratio f/6.8 Objective Lens Quadruplet air-spaced APO(including one ED glass element) Image Circle 44mm Maximum Accessory Connection(with the Focuser Fully Retreated) Imaging Mode:81mm (from the base of M48×0.75 male threa99mm from the base of M54×0.75 male thread) Observing Mode:120mm from the end of 1.25" eyepiece holder130mm from the end of 2" eyepiece holder Total Length 289mm (including 1.25" adapter as dew shield contracted)323mm (including 1.25" adapter as dew shield fully stretched)336mm (including the photographic adapter as dew shield retracted)369mm (including the photographic adapter as dew shield fully extended) Net Weight 2.36kg Gross Weight(Including Tube Ring & Dovetail Plate) 2.86kg Rear-End Thread Type M64×0.75 - M54×0.75M54×0.75 - M54×0.75M54×0.75 - M48×0.75 (with M48×0.75 filter thread) Product Size Diagram 60F Connection Diagram The Locking Screw Position Diagram EAF (optional) Installation Optical Path Diagram Spot Diagram
