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Astro-Tech High Grade Sterling Plossl Eyepiece 12.5mm , 17mm & 20mm - 3 size set Free Shipping

Condition is New (Open Box)

Benchmark Quality Manufactured by Long Perng using high grade lens, with 40 layers of fully multi-coated optics and 98% penetration. This advanced method of coatings yield super sharp, flat images from galaxies to planetary observing. These sharp looking Sterling Series Plossls are exceptionally baffled, with edge blackened lens, leaving virtually no ghosting or internal reflections. Unique design eliminates the need for rubber eye guards. Barrels are threaded to accept 1.25'' filters

Focal length: 20.0mm

Eye relief: 12.0mm

Barrel size: 1.25 inches

Field of view: 55.0 degrees

Lens construction: four elements in two groups

Construction: aluminum

Coating: 40 layer fully multi-coating

Weight: 97g

Focal length: 17.0mm

Eye relief: 10.20mm

Barrel size: 1.25 inches

Field of view: 55.0 degrees

Lens construction: four elements in two groups

Construction: aluminum

Coating: 40 layer fully multi-coating

Weight: 97g

Focal length: 12.5mm

Eye relief: 7.5mm

Barrel size: 1.25 inches

Field of view: 55.0 degrees

Lens construction: four elements in two groups

Construction: aluminum

Coating: 40 layer fully multi-coating

Weight: 85g

Filed under: Eyepieces & Accessories