SHARPSTAR 2.5" FIELD FLATTENER 1.0x GSO Two locking knobs

Two locking knobs

It has to be used without the UV-IR cut filter as it blocks the ultraviolet radiation

The optical design includes a lens and a two element flattener group situated before the focal plane

take a picture

alloy steel

SHARPSTAR 2.5" FIELD FLATTENER 1.0x GSO Two locking knobsThe SharpStar 2. 5" field flattener is one of the best and most universal correctors for apochromatic refractors. It delivers a fully illuminated circle for the full frame (24mm x 36mm) and a corrected image circle up to 55mm. Differently from many other flatteners, it does not reduce the native focal length of your telescope. In other words, its magnification is x1. 0. This allows the full use of the power of the telescope. The flattener is suitable