Optolong 3nm L-Ultimate Filter - 2" Baader but without the added weight

but without the added weight of the 11" optical tube

Eyepiece Manufacturer Series: Baader Hyperion

29 grams / 1 ounce Filter material: Celestron proprietary Mylar filter Nylon safety screws: Three Warranty: 2 Years

For maximum stability and secure optical alignment the Celestron SkyMaster 20 x 80 Binoculars features enhanced structural reinforcement to the main binocular body

Barrel Length: 2"

Optolong 3nm L-Ultimate Filter - 2" Baader but without the added weightThe Optolong L Ultimate 3nm dual band filter is designed to drastically reduce the effects of light pollution. The 3nm isolates the nebulae's emissions into H Alpha (red) and OIII (green blue). It blocks light pollution, maximizes the signal from nebulae, and darkens the sky background. It also blocks artificial light from mercury vapor lamps, high and low pressure sodium vapor lights, and unwanted natural light caused by the emission of neutral