Feature
●2" Eyepiece Filter; with metal mount 2" filter threads
●For Horsehead Nebula California; and Cocoon Nebulae in Dark Skies
●Mainly aimed at the 486nm (blue) line spectrum nebula; filters out the interference of other light; can improve the contrast of the nebula
●Through the use of filters; the Horsehead Nebula can be clearly seen; filter with metal mount 2" filter threads; threaded to fit 2" eyepieces and threaded diagonal barrels
●To see a sufficiently dark nebula; ensure a large enough luminous flux; needs to be observed with a large-aperture telescope
Description
