Antares 0.5X Focal Reducer - 2"

The story used to be that focal reducers are built for Schmidt-Cassegrain telescopes only. SCTs are supposedly the best all-around telescopes for astrophotography and imaging. Wrong! The new surge of high-end refractors built for easy astrophotography means that there is a need for new designs of photographic adaptors. And the The Antares 2-inch 0.5x Focal Reducer is one such adaptor!

The Antares 2-inch 0.5x Focal Reducer threads into the nosepiece of 2-inch camera adaptors commonly used for Digital SLR cameras. The same threads found on 2-inch eyepieces for coloured filters are used in this new item as well.

Decrease your telescope effective focal length by 50 percent to conceal tracking errors! Halve the f-stop of your telescope for shorter exposures! Also, the Antares 2-inch 0.5x Focal Reducer will work with 2-inch eyepieces for visual use! A careful test of the 0.5x with a Meade 26mm QX eyepiece, 2-inch Diagonal and Sky-Watcher 102mm f/10 achromat produced a fully-illuminated field of view.

*Be careful with the The Antares 2-inch 0.5x Focal Reducer when using the combination with Newtonian Reflectors or short-focus refractors, as backfocus may be lacking. On reflecting telescopes, make sure to use the focal reducer only with eyepiece focal lengths shorter than seven times the new effective focal ratio of your telescope. 

• Halve the f-stop of your telescope for shorter exposures

    

• Decrease your telescope effective focal length by 50 percent to conceal tracking errors

   

• Will work with 2-inch eyepieces for visual use

   

• Threads into the nosepiece of 2-inch camera adaptors commonly used for Digital SLR cameras

    

• Crafted for use with all telescope designs

Equipment Type: Focal Reducer

Compression: 0.5x

Size: 2"

Threaded: Yes

# of Elements: 2

Construction: Black anodized aluminum cell

Application: *All telescope designs

Coatings: Fully Multi-coated