Askar 2.5" F/3.9 Full Frame Reducer for FRA400 (RFRA400/ASKAR7256RD)

Askar 2.5" F/3.9 Full Frame Reducer for FRA400 (RFRA400/ASKAR7256RD)Askar provides a brand new F 3. 9 full frame reducer for FRA400 astrograph, further reducing the focal length and thus shortening the exposure time on its original 400 focal length and f 5. 6 focal ratio design basis. The reduction factor is 0. 7, and the reduced focal length is 280mm, which can satisfy most deep sky astrophotography. The back focus is standard 55mm. The reducer has built in M480. 75 thread, allowing for the attachment of 2" filters.

4") Magnification of Eyepiece 2: 100x Barlow Lens: Not Included Finderscope: StarPointer™ red dot finderscope Star Diagonal: Erect Image Diagonal - 1

we developed a larger focuser and draw tube having a 3" front aperture and 2

Lunt purchases our raw etalon glass materials from a ISO qualified company on the east coast of the United States

The ND96-0

21 oz (6 g) Filter 1: ND96-0

producing stunning wide-field images

R-Filter provides maximum transmission of H-alpha and S II emission

high contrast images

Four pieces of Hexagon socket  screws are equipped and also installation tools are provided

5" OTA Outer Diameter 17

This simple yet effective design is perfect for visual observation of faint objects

The amazingly versatile Celestron 8mm - 24mm Zoom Eyepiece allows you to choose from a variety of magnifications in a flash