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75mm) Focal Length: 18mm (
Mounting Base Diameter
For use with Explore Scientific ED127-152-165 Air-Spaced Triplets
readers will be prepared to create their own nocturnal masterpieces
Like New ZWO 31mm Unmounted LRGB Filters 68° FOV 75mm) Focal Length: 18mm (This is a like new set of 31mm unmounted ZWO LRGB filters in excellent condition, completely clean, and unopened. Comes in its original jewel case and no box. Key Features Premium 31mm unmounted round LRGB filter set for use with monochrome astronomy cameras Precision passbands partially block light pollution from sodium lamps while passing OIII emission from nebulae for a more natural image color IR blocking from 700nm to 1100nm to eliminate need for
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