Celestron Skymaster Pro 15x70 Edge-HD L-Pro is multi-bandpass filter which

L-Pro is multi-bandpass filter which offers better color balance by maximizing the transmission band

As a complement to the EFW2

The aperture is off center and made of a high quality

'This is quite possibly the most inviting guidebook ever written to help people with binoculars and small telescopes find

Celestron Skymaster Pro 15x70 Edge-HD L-Pro is multi-bandpass filter whichSkyMaster Pro binoculars are the ideal choice for amateur astronomers or anyone that observes at great distances. Compared to lower priced large aperture binoculars, SkyMaster Pro uses superior optics, coatings, internal parts and housing materials. With large objective lenses, BaK 4 prisms and fully multi coated optics utilizing Celestrons proprietary XLT coating technology, the view through a SkyMaster Pro is second to none at this price point.