Sky Mentor Light Pollution Filter 1.25" - TA301-2 type-solar-telescopes 8X reducers to the 2"

Sky Mentor Light Pollution Filter 1.25" - TA301-2 type-solar-telescopes 8X reducers to the 2"Sky Mentor Light Pollution Filter 1. 25" TA301 2 The Sky Mentor Light Pollution Filter is a specialty filter that blocks the visual spectrum except for wavelengths between 480 nm and 510 nm. This type of blocking filter is also known as a Nebular, ALP (anti light pollution) or an LPR (Light Pollution Reduction) filter. This particular transmission characteristic allows passage of ionized oxygen and hydrogen lines, but blocks light pollution sky

SKU: 4052336457 · From dancingstarsllc.com