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Key Features
- Virtually Eliminate Spherical Aberration
- Large 44mm Imaging Circle
Designed for Esprit 150EDX refractor optical tubes, the Sky-Watcher Field Flattener is a useful upgrade for astrophotography and astroimaging. The field flattener corrects the inherent spherical aberration of curved lenses which, if left uncorrected, causes images to appear distorted at the edges of the field of view.
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