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Ships within 48 hours · Estimated delivery Sep 16 - Sep 21
A red flashlight is one of the most beneficial accessories you can own as an amateur astronomer
Fully coated optics for excellent light transmission on faint stars
This is a quality 4-element Plossl optical design at a super affordable price
Complete Systems
ZWO 131mm Quad APO Refractor Dew Control A red flashlight is oneZWO FF131 APO Flat Field Apochromatic Refractor *Focus can be achieved within a back focus range of 4273 mm, measured from the M54M48 interface shoulder. Main Features Flexible Connectivity for Multiple Configurations Uniqueness Four Element Optical Design The FF131 APO features a four element, fully air spaced apochromatic optical design. All four elements work together to deliver a flat imaging field without the need for an additional field
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