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

8X reducers to the 2" focusers of the non-"is" versions of NP-101

in the case of long focal length telescope eyepieces

wider field

Also includes 1/4"-20 / 3/8"-16 tripod adaptor piece

especially while guiding for imaging

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