• The Askar FMA180 features a triplet apochromatic design with two pieces of ED glass, effectively eliminating chromatic aberration and serving as a great option for both imagers and visual astronomers.
• The reducer for the Askar FMA180 adopts an APO design, reducing aberration risk and transforming the configuration from a triplet to sextuplet, enhancing its overall optical performance.
• With a 40mm aperture and 220mm focal length, the FMA180 achieves an f/5.5 focal ratio, making it ideal for wide field observation in visual astronomy. However, its true strength lies in its imaging capabilities, especially when connected with the reducer, resulting in a 180mm focal length and f/4.5 focal ratio.
• The standard configuration of the FMA180 includes tube rings and a two-part finder bracket. The finder bracket comprises a dovetail plate for easy connection to a tripod and a dovetail foot for stable support.

The Askar FMA180 consists of a triplet apochromatic design with two pieces of ED glass to remove chromatic aberration. This makes it great for imagers and visual astronomers alike. In addition, the reducer for the Askar FMA180 also consists of an APO design further reducing aberration risk and transforms the configuration from a triplet to sextuplet.

For visual purposes, the 40mm aperture and 220mm focal length result in a f/5.5 focal ratio which is great for wide field observation. However, where it really excels is its imaging abilities. When adding on the reducer, the focal length becomes 180mm and focal ratio f/4.5.

The FMA180 also can serve as a finder or guidescope if needed.

The FMA180 includes tube rings and a two part finder bracket with a dovetail plate to connect to a tripod and dovetail foot.

When using the FMA180 in photographic mode, follow the pattern: (removing the extension tube creates 83mm backfocus from the standard 55mm)

• Main tube + focuser + reducer + reducer connection extension tube: 180mm F4.5 sextuplet APO flat field correction astrograph lens (recommended photographic mode, product assembled)
• Main tube + focuser + extension tube 1 + extension tube 2＋reducer connection extension tube : 220mm F5.5 triplet APO lens

When using the FMA180 in visual mode: follow the pattern:

• Main tube + focuser + extension tube 1 + 1.25" adapter: It can be combined with 1.25" star diagonal and eyepiece for standard observation mode or finderscope mode.
• Main tube + focuser + extension tube 1 + extension tube 2: It can be combined with 1.25" eyepiece for visual observation mode or finderscope mode.