The test of this flattener with my William Optice FLT 110 Lite. William Optics recommends this flattener for this scope.

Here you will find 9 sections 2 x 2 sections from a standard 14.4 x 9.6 sized photo. The center section is from the center of the original. The other 8 are from the very edges, the same positions as assembled here. In other words the top left corner from the original is the top left corner here. This is a single 6 minute exposure with the following processing in Photoshop CS3: Color balanced, White and Black points set, all with Levels. No other processing.

You should view the image in the original size to see how well, or not, the flattener worked. The center portion of the photo has nice round stars, no so in the corners. At the pixel level, the stars in the center are in a 3 x 3 pixel box, with the corner pixels dark. In the corners the stars take a 6 x 7 box and the star is elongated from top left to bottom right. In addition to the elongation, you can see there are now spikes on many of the corner stars.

The 0.8 reduction is a nice feature. The stars in the outer clips nearest the center clip are represntative of where the edges would be of an unreduced photo. The stars here are not round either, about the same as a photo without the reducer. At the pixel level they are in a 6 x 5 box and although still elongaged they are much rounder and look pretty good under a normal view.

Bottom line. I am not impressed. The flattener does not perform on my scope. I will use it as the reduction is nice and does speed up my scope from its native f7.0 to f5.6. I will try the W/O Reducer/Flatener II I have with this scope in the future and will report on that as well.