Add review for Meade Series 4000 Narrowband Nebular Filters
Meade Series 4000 Narrowband Nebular Filters
Meade Series 4000 Narrowband Meade Nebular Filters: A remarkable advance for the serious visual observer of emission nebulae. Meade Narrowband Filters #908 N zero-in on the three most important visible wavelengths emitted by deep-space emission nebulae: the two spectral lines of Oxygen III at 496 and 501nm and the Hydrogen Beta line at 486nm. Virtually all unwanted city light emissions are rejected by factors of 99.9+%. Because of its narrow bandpass characteristics, the Meade Narrowband Nebular Filter achieves striking levels of contrast between the nebula itself and the surrounding dark-sky environment:...
