Celestron Nature DX ED 8x42 Binoculars - 72332 Piggyback Adapter ETX 90 Observer

ETX 90 Observer

The prime focus focal plane is located near the front aperture of the optical system

Item Number: ES-ED10207-01 Focal Length: 714 mm Focal Ratio: f/7 Limiting Magnitude: 12

Precision finder scope is made from machined aluminum parts with quality optics and a battery operated illuminator for the reticle

Solar Telescope Aperture: 60 mm

Celestron Nature DX ED 8x42 Binoculars - 72332 Piggyback Adapter ETX 90 ObserverCelestron Nature DX ED 8x42 Binoculars Extra Low Dispersion (ED) objective lenses provide high resolution, high contrast images that are virtually free of optical defects like chromatic aberration (color fringing) Fully multi coated optics deliver maximum light transmission through the optical path Phase coated BaK 4 prisms produce vivid, true to life colors Eyeglass friendly generous eye relief and sturdy, twist up eyecups with multiple stops Feature