H Alpha 5nm Narrowband Telescope Filter for Astrophotography

Capture breathtaking views of emission nebulae and cosmic gas clouds with this H Alpha 5nm narrowband filter. It highlights the deep red hydrogen-alpha light that forms the structure of the night sky’s most vivid regions.

Key Features

• H Alpha 5nm filter isolates the 656nm hydrogen-alpha wavelength for deep red clarity

• 90% peak transmission ensures bright, accurate colour and strong image contrast

• Blocks unwanted wavelengths to reduce light pollution and enhance definition

• Ideal for photographing nebulae, star-forming regions, and interstellar gas clouds

• Crafted from precision optical glass for exceptional sharpness and consistency

• Fits any telescope with a 2 inch (M48x0.75) filter thread

Specifications

• Type: H Alpha Narrowband filter

• Size: 2 inch (50.8mm)

• Bandwidth (FWHM): 5nm

• Central Wavelength (CWL): 656nm

• Peak Transmission: ≥90%

• Blocking: ≥OD5

• Clear Aperture: 44mm

• Thickness: 1.85mm

• Thread: M48x0.75

Package Contents

• 1 x H Alpha 5nm Filter

• 1 x Material Plastic Box

What Makes This a Smart Buy:
Perfect for capturing vivid hydrogen-rich nebulae, this precision filter produces striking astrophotos even under suburban light-polluted skies—ideal for any serious night-sky photographer.