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Chroma H-Alpha 3nm Filter

(2 customer reviews)


Chroma H-Alpha 3nm Narrow Band Filter

H-alpha filters are essential for imaging nebulae and other objects which are rich in ionized hydrogen.



Chroma H-Alpha 3nm Narrow Band Filter

H-alpha filters are essential for imaging nebulae and other objects which are rich in ionized hydrogen.

At 656.3nm, a narrow-band emission filter is required to separate H-Alpha from the SII doublet (671.6nm and 673.1nm).

Wavelength (CWL): 656

Bandwidth (FWHM): 3

Please Contact Bernard at Modern Astronomy for Availability and Lead times.

2 reviews

  1. Chris H

    Having heard great things about the Chroma filters, I decided that I would buy a set of the 31mm Ha, OII & SII for my new camera.
    I cannot do a straight comparison to my previous Astrodons because they were 5nm and these are 3nm.
    However I could not be more pleased with my new Chroma filters. The contrast is great, stars are perfect, no anomalies of any kind. I am very pleased I went for these ones.

  2. Mike R (verified owner)

    I was in two minds over purchasing an Astrodon 3nm or a Chroma 3nm. I found that the 31mm Ha Chroma unmounted filter gave me a potential future upgrade ability should I ever change my camera.
    Even though this is my first Narrowband filter it has exceeded my expectations and opened up a new avenue in imaging. Light Pollution is severe in my location, imaging in moon light is also a great benefit from this filter.

    No nasty artefacts, stars are nice and sharp. Makes post processing them a breeze. Highly recommended!

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