Hi,
For sale I have my William Optics P-Flat 4. I purchased this in May 2011 and have been using it with my ED80. It is a 0.8x reducer/flattener, and according to the William Optics website is suitable for refractors of 500mm to 1000mm focal length.
Here is the link to the website which includes spacer specifications and so forth. With the ED80 I had the flattener "set" to 86 and used a 10mm spacer between my QHY8L and the ED80 (refer to sample photos below).
http://www.williamoptics.com/accesso...4_features.php
The P-Flat 4 is in immaculate condition - no dust or markings.
Reason for sale : I have purchased a Hotech SCA Flattener for my ED120, which is a flattener only (I want to maintain 900mm focal length). As it turns out, this flattener also works very well on the ED80, therefore I now have too many flatteners!!
Price : $260 which
includes registered post to anywhere in Australia.
Cheers,
Daniel
