Cloud Break Optics

F80RE Reducer

F80RE Reducer - Main image
$179.4 $299 In stock

Category: Astrophotography Accessories

Description

FF80APO 0.76X Full Frame Reducer

ZWO has also released a new 3-inch FF80APO 0.76X full frame reducer with a three-element optical design, including one element made of ED glass. Its reduction factor is 0.76x, which gives the FF80APO f/7.5 astrograph a shortened focal ratio of f/5.7 and a shorter focal length of 312mm. This allows for less total integration time and a wider field of view, bringing more convenience and possibilities for your wide-field deep sky imaging.

The reducer has a rear interface that attaches to the FF80APO telescope tube’s included four-segment camera extension tube. The back focus is the standard 55mm, and it has a built-in M48X0.75 2-inch filter thread for easy attachment.

Connection steps:

  1. Prepare the FF80APO telescope tube and the focal reducer.
  2. Unscrew the four-segment connector at the end of the FF80APO telescope tube.
  3. Unscrew the end cap of the 0.76X reducer and attach it to the M68 thread of the four-segment connector.
  4. Unscrew the front cap of the reducer, insert it into the focuser inner tube, and tighten it.


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United States · Return window (days after delivery): 30. Return method: By mail. Return postage: Seller pays.

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Customer Reviews (4.6 / 5 · 5 reviews)

Victoria Z. ★★★★★

The ED glass element really makes a difference—stars are sharp and round across the entire frame with my FF80APO. Setup was straightforward, and the reduction factor of 0.76x gives me a much wider field for large nebulae.

Julian ★★★★★

The full frame coverage is the real win here—my corners finally look like stars instead of seagulls, and the 0.76X reduction leaves plenty of room for a larger sensor. Focus was sharp right out of the box, no fiddly shims needed.

Eli ★★★★★

The three-element design with that ED glass really tightened up the stars across my full-frame sensor. First clear night out and I noticed zero coma even at the edges, which was my main worry.