Allows nebulae light to enter eyepiece at increased levels, but blocks out most forms of light pollution. Threads into the barrels of all Meade 1.25" eyepieces and most other 1.25" brands Clear aperture is 26mm.
Premium multi-layer interference filters, the finest obtainable. Use broadband ("B") filters to block most forms of light pollution; use narrowband ("N") filters in heavily light-polluted areas for for extremely high-contrast observing of faint nebulae.
|Name||Meade - #908N Narrowband Nebular Filter Series 4000|