I bought the focal reducer for my LX200 telescope, but with this adapter I can also use it on my William Optics Zenithstar 80 ED II APO
To widen the field of view of my LX200 10-inch f/10 I bought the Meade Focal Reducer f/3.3
The resulting focal length and field of view can be seen in this table
Please note that the distance between the Focal Reducer and the CCD of your camera is VERY critical and greatly influences the actual focal length and thus the FOV.
I have made a Tutorial how to measure and determine the FOV of your setup.
Here is how I measured:
LX200 + FR 3.3
LX200 10-inch f/10 + Meade Focal Reducer FR 3.3 + Scope Teknix Filter Wheel + Astronomik LRGB Filter set + ATK16IC camera
The felt on the filterwheel is for this
The distance between the far end of the LX200 and the start of the ATK16IC camera is 84.18 mm.
M42 - The Great Orion Nebula.
March 5, 2008 19:19 - 19:25 UT.
Imaging: LX200-10 inch, f/10 with f/3.3 Meade Focal Reducer operating at f/5.08 [focal length 1270 mm], ATK16IC camera, Astronomik Ha filter.
Exposures: Ha: 6x35s [1x1]; unguided.