Feature
●Astrophotography under a light-polluted night sky can be difficult. The solution is an H-alpha filter. The Astromania H-alpha separating filter filters a large part of this light pollution.
●Allows 12nm light bandwidth, centered at a wavelength of 656nm, 90% transmission at H-alpha line 656nm, whether under dark skies or under the sky of a city. This means that the filter also blocks the infamous stray light and light from mercury and sodium lamps.
●Young stars embedded in the bright red of a nebula - an H-alpha filter is the expert when you want to capture hydrogen mist in all its glory.
●The Astromania H-aplha separation filter improves the contrast between object and sky, so you can take good pictures even under the urban sky.
●Metal filter cell threads directly into the 1.25" shank of your telescope eyepiece. Mounted in a beautifully anodised housing.
[1.25 Inches]
[2 Inches]
Description
Astromania 1.25" Narrowband NBPF Hydrogen-a 12nm Filter Astrophotography under a light-polluted night sky can be difficult. The solution is an H-alpha filter. The Astromania H-alpha separating filter filters a large part of this light pollution. This convenient filter allows only 12nm bandwidth of light to pass through centered at a wavelength of 656nm, which means it blocks a large portion of the stray light and also blocks the light from artificial mercury and sodium vapor lamps. Young stars embedded in the bright red of a nebula - an H-alpha filter is the expert when you want to capture hydrogen mist in all its glory. The Astromania H-aplha separation filter improves the contrast between object and sky, so you can take good pictures even under the urban sky. Metal filter cell threads directly into the 1.25" shank of your telescope eyepiece. Mounted in a beautifully anodised housing.