Levenhuk Ra H-Beta 1.25' filter may be used for deep-sky observations of emission nebulae and other marvels. Apart from enhancing the contrast of observed objects, this filter suppresses up to 90% of light, which is most useful during urban stargazing sessions. This filter suppresses light pollution, making skies darker as a result. Levenhuk Ra H-Beta 1.25' filters have a barrel diameter of 1.25'.
This filter has a passband from 4720 to 4850 (472-485 nm) and may be used for stargazing and capturing high-contrast images during astrophotography sessions.