Sky-Watcher 0.85x focal reducer/flattener for the Sky-Watcher Evostar 72ED PRO refractor.
Effectively reduces the telescope’s focal length by a factor of 0.85x to enable imaging at f4.93
Also provides much improved field-edge correction.
Use in conjunction with a DSLR-M48 Ring Adapter.
Supplied with thumbscrew fit adapter.