The Askar FRA400C is a versatile quintuplet APO astrograph designed for both astrophotography and visual use. With a 72 mm aperture, 400 mm focal length at f/5.6, and ED glass elements, this telescope delivers crisp, flat-field images across a large 44 mm full-frame sensor.
Key Features
Aperture: 72 mm
Focal Length: 400 mm (f/5.6)
Optical Design: Quintuplet APO (Petzval)
Image Circle: 44 mm (full-frame coverage)
Focus: 2.5″ dual-speed rack-and-pinion focuser
Back Focus: 140 mm
Use Case: Wide-field astrophotography and observation
Why Choose the FRA400C?
The FRA400C’s Petzval optical design eliminates the need for a separate field flattener, ensuring sharp stars across the entire frame. This makes setup quicker and easier, saving valuable imaging time under the night sky.
Ideal For
Wide-field imaging of nebulae and star clusters
Full-frame astrophotography
Astrophotographers seeking a compact, flat-field refractor
The Askar FRA400C is a superb balance of portability, optical performance, and convenience, making it an excellent choice for beginners and advanced imagers alike.
