Please note: Last regular shipment before Christmas is on December 19, 2024, after which only express shipments can be sent. Our store is closed on Christmas Eve and New Year's Eve. (Close)
The hydrogen line alpha (H-alpha) is the dominant emission line of the night sky in the visible spectrum. Almost all objects contain emissions of this spectral component in bright red. With sensitive sensors, amazing images can be achieved after a short time.
The Altair Astro Premium 7nm Ha filter is designed for astro imaging of
nebulae with Mono CCD or CMOS cameras, blocking light pollution by
cutting out the light pollution wavelengths.