About this product
Part Number: 20321
This Sky-Watcher 0.85x focal reducer/flattener is optimised for the Sky-Watcher Evostar 150ED PRO refractor.
Effectively reduces the telescope’s focal length by a factor of 0.85x to enable imaging at f6.8.
Also provides much improved field-edge correction.
Use in conjunction with a DSLR-M48 Ring Adapter.
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