Williams Optics P-Flat88 field flattener. This is a 1:1 field flattener designed for f5.5-6.0 refractors. Has a 2" barrel (with a 2" female filter thread) on the telescope side, and a T-thread on the camera side for direct connection to your CCD or DSLR T ring. See here for details:
https://www.williamoptics.com/access...ner88_spec.php
Comes with all original packaging and end caps. Hardly used, optically perfect - it didn't suit my scope so got repackaged and has sat on a shelf for a while now.
Price reduced to: $100 posted within Australia or $110 to NZ.
