The William Optics longer adapter for FLAT68III or FLAT7A will allow you to use the FLAT68III flattener on a Fluorostar 91 refractor. It ends with a male M48 thread for connection to the imaging train.
This adapter has a total length of 45mm. This is longer than the 30mm version supplied with the FLAT6AIII flattener.
To use the adapter, remove the short version that was supplied with the FLAT68III flattener. Next replace it with this longer version. If you have a Fluorostar 91 refractor, set the flattener at 5mm.
Reviews
There are no reviews yet.