ASKAR FMA135, Lente Astro APO, DF135mm, f/4.5, Angulo Super Wide

The ASKAR FMA135 is a premium optical instrument that features a 30mm ED triplet objective to deliver superb image quality for astronomical and terrestrial imaging. It also works as a finder/small telescope/guide scope.
The heart of the FMA135 is an air-spaced 30mm apochromatic f/4.5 triplet with an ED element to minimise chromatic aberration. With a focal length of 135mm, the objective lens is optimised and tested for demanding astronomical applications. The objective is carefully matched to an integrated three-element field flattener that yields flat fields and razor-sharp images with astronomy cameras with APS-C (or smaller) sensors.
The camera side of the FMA135 includes a standard M42x0.75 male thread for attachment to most astronomy cameras or T-rings. The instrument has a 55mm back focus. The top tube ring, which acts as a light/dew shield, includes standard M28.5x0.6 female threads that accept 1.25” astronomical filters. The body of the FMA135 includes a rotatable focuser to ensure precise and repeatable focus.
For straight-through observing with an eyepiece, there’s a standard 1.25” adapter that threads onto FMA optical tube. The FMA135 also includes a mounting ring with standard Vixen-style dovetail.
The overall tube length is 113mm. The FMA135 weighs just 280g