Explore Scientific H-Beta 2.0-inch Nebula Filter 310230 - In Stock
Explore Scientific H-Beta 2.0-inch Nebula Filter 310230 Explore Scientific Nebula Filter 1.25" H-Beta Range from 478nm to 496nm with a 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 2.0-inch eyepieces and filter wheels. CA R
Grad ND filter. First it doesn't really state what stop it is. It's cheap $11 so you're probably giving up quality. I've never tried Sunpak but I haven't heard the best thing's about it. If you're on a budget and want to try the given effect out, then maybe this is your solution.