Description
FF65APO 0.75× Full Frame Reducer
ZWO has released a brand-new FF65APO 0.75× full frame reducer with a four-element optical design. It has a reduction factor of 0.75x, which gives the FF65APO f/6.4 astrograph a shortened focal ratio of f/4.8 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 back focus distance is the standard 55mm. It also comes with two thread adapters of M54 and M48, and a built-in M48x0.75 2” filter thread, which makes the connection work simple and convenient.
Connection steps
- Prepare the FF65APO telescope tube and the focal reducer.
- Unscrew the eyepiece holder at the end of the FF65APO telescope tube.
- Unscrew the end cap of the 0.75X reducer.
- Insert the reducer into the focuser and tighten.
![](https://i.zwoastro.com/wp-content/uploads/2023/05/36aeaf1ae6889d54c8d93dbcb3ba03c3-1024x597.png)
![](https://i.zwoastro.com/wp-content/uploads/2023/05/3cbf3ffa0f5946042320bdd6d6ca44b1-1024x552.png)
![](https://i.zwoastro.com/wp-content/uploads/2023/05/19e6290fd7d5b414afd440311b77a9c1-1024x552.png)
![](https://i.zwoastro.com/wp-content/uploads/2023/05/506c65df8250be1b98f0b0b92d780121-1024x552.png)
![](https://i.zwoastro.com/wp-content/uploads/2023/05/18f15cb449e6001eceede59b1c51eded-1024x552.png)
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
- Prepare the FF80APO telescope tube and the focal reducer.
- Unscrew the four-segment connector at the end of the FF80APO telescope tube.
- Unscrew the end cap of the 0.76X reducer and attach it to the M68 thread of the four-segment connector.
- Unscrew the front cap of the reducer, insert it into the focuser inner tube, and tighten it.
![](https://i.zwoastro.com/wp-content/uploads/2023/05/c56273705b4aa28de96c3ffa59410ca2-1024x597.png)
![](https://i.zwoastro.com/wp-content/uploads/2023/05/fd9a766a504478bb33f5c8cad524b8d0-1024x552.png)
![](https://i.zwoastro.com/wp-content/uploads/2023/05/76670cbea112400392a10e0601e06bcc-1024x552.png)
![](https://i.zwoastro.com/wp-content/uploads/2023/05/607e1a24af0c142974e6480f6f59f551-1024x552.png)
FF107APO/FF130APO 0.7× Universal Reducer
ZWO has released a new 3-inch 0.7× full frame reducer that is compatible with the FF107APO and FF130APO telescopes. It has a three-element optical design, including one element made of ED glass. Its reduction factor is 0.7, which gives the FF107APO a shortened focal ratio of f/4.9 and a shorter focal length of 524mm. 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 standard 55mm back focus and comes with M68, M54, and M48 threaded adapters for easy attachment.
Connection steps
- Prepare the FF107APO telescope tube and the focal reducer.
- Unscrew the M86 to 2-inch adapter at the end of the FF107APO telescope tube.
- Unscrew the end cap of the 0.7X reducer.
- Insert the reducer into the focuser inner tube and tighten it.
![](https://i.zwoastro.com/wp-content/uploads/2023/05/ac30c42a9015f6e662b39470745b1fe4-1024x597.png)
![](https://i.zwoastro.com/wp-content/uploads/2023/05/cc630448fef9e3f712b45139fcda9195-1024x552.png)
![](https://i.zwoastro.com/wp-content/uploads/2023/05/a4dd946af80cae73ece61aaad84d4f21-1024x552.png)
![](https://i.zwoastro.com/wp-content/uploads/2023/05/5c7636b9de1040ba476b42d91aed5fae-1024x552.png)
![](https://i.zwoastro.com/wp-content/uploads/2023/05/98ba86a28546a1248a3ab301fd6cd3e2-1024x552.png)
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