Askar FRA400C Telescope, Aperture 72mm, Focal Length 400mm, f/5.6 Quintuplet Dual ED air-Spaced APO Suitable for Astrophotography Visual Observation

The FRA400C is mechanically optimized for different applications. Users can use it for astrophotography, daily photography, and visual observation. The aperture ranges of FRA400C from F22 to F5.6, with marked scales on the tube for step-based adjustments to prevent accidental changes and preserve settings. The FRA400C features an improved expandable tube ring with four sets of M4 and M6 threaded holes for different accessory mounting. Two finder bases are included for attaching astronomical accessories. The FRA400C features a 72mm aperture, 400mm focal length, and a focal ratio of 5.6.It adopts a quintuplet lens design with two ED glasses, supporting a 44mm full-frame image circle. At the bottom of the tube ring, the FRA400C designs a multi-functional handle, it includes multiple holes for mounting dovetail plates or equipment. It also has M6, 1/4, and 3/8 threaded holes for tripod mounting. The handle doubles as a carrying grip when the telescope is flipped.