Alluxa introduces two Hydrogen Alpha (H-Alpha) Emission Line Filters that are revolutionizing the ultra-narrow optical filters market. Though these new filters have been specifically tailored to ...
This image of M13, a globular cluster in Hercules, was taken on 2005 June 25 with our SBIG ST-7 CCD camera and a near-H-alpha filter. These images of Jupiter, Io, and Europa were taken on 2004 April 5 ...
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