Explore Scientific 8.5mm 82° Series LER Waterproof Eyepiece - 1.25"

Explore Scientific 8.5 mm 82-Degree Series LER Waterproof Eyepiece: A 8.5 mm focal length:  This eyepiece is perfect for observing objects that would benefit from high magnifications such as the Moon, the planets and binary stars. When atmospheric conditions are almost perfect, this eyepiece can reveal planetary details that will are truly stunning. The 8.5 mm size is also great for detailed examinations of the structures within deep sky objects like nebulae. Long Eye Relief (LER) of 16.3 mm:  The 8.5 mm LER ocular 82° Series of Argon-Purged Waterproof Eyepiece Series puts the focus on a comfortable viewing experience for all observers. The long eye relief of 16.3 mm is especially important for eyeglass wearers because it allows them to enjoy the full field of view. Multi-Element and Edge-Blackened:  This eyepiece achieves superior light transmission with edge-blackened optics made of low-dispersion glass with a high refractive index. Each lens also is fully multi-coated with durable