Acuter Natureclose 80mm Straight Spotting Scope ST80B ED Doublet Peak Quantum Efficiency: 78% (this

Peak Quantum Efficiency: 78% (this is a very high value)

and Oxygen III nebula emission lines so that the contrast and signal-to-noise ratio between nebulae were maximized

they increase the contrast between nebula and night sky

25” accessories with long barrels from damaging the mirror

Acuter Natureclose 80mm Straight Spotting Scope ST80B ED Doublet Peak Quantum Efficiency: 78% (thisAcuter Pro Series Waterproof Zoom Spotting Scopee 80mm 0 Straight The superb ACUTER NATURECLOSE Waterproof Spotting Scopes are perfect for serious terrestrial observations. Optical performance is excellent, with all models delivering crisp, bright, sharp, high resolution images, across the entire field of view. An 8 24mm Zoom eyepiece is included with each model as standard. The standard multi coated zoom eyepiece and fixed magnification accessory