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Ships within 48 hours · Estimated delivery Jul 27 - Aug 1
19mm overall
Rack & Pinion Focuser
Eyepiece Holder for Quark
0kg Weight mount head 6
baffled and fully optimized specifically for the Hydrogen Alpha wavelength (~656nm)
Explore Scientific Nebula Filter H-beta 2.0-inch Tagged 19mm overallExplore Scientific Nebula Filter H beta 2. 0 inch Introducing this High quality and functional Nebula Filter H beta 2. 0 inch by Explore Scientific. This Nebula Filter 1. 25" H Beta Ranges from 478nm to 496nm with a peak at 489nm. Transmission 94. 5%. The 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
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