0.85x Focal Reducer/Corrector for Sky-Watcher Evostar 120 ED and 150 ED APOs is designed for serious Astro-Imagers. Optimized for the Sky-Watcher Evostar 120/150 ED APOs, this superb quality accessory effectively reduces the telescope’s focal length by a factor of 0.85x and provides much improved field-edge correction. Features:
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