Nebula Filter H-Beta 1.25-inch 80mm true apochromatic telescope that delivers

true apochromatic telescope that delivers stunning

even with gloves on

eye comfort is critical when trying to observe at the visual limits of the telescope

this eyepiece produces 160X which will perform very well with good seeing conditions

Designed to inspire young scientists

Nebula Filter H-Beta 1.25-inch 80mm true apochromatic telescope that deliversExplore Scientific Nebula Filter 1. 25" H Beta Range from 478nm to 496nm with peak at 489nm. Transmission 94. 5% H Beta Hydrogen is the most abundant element in the universe and many nebulae glow in the light of H beta. This line filter blocks all other wavelengths (and thereby nearly all of the artificial light) and only the emission line of hydrogen beta will pass. This filter fits all standard 1. 25 inch eyepieces and filter wheels.