Product series:
The filters in the H-alpha 6nm series are suitable for photographing hydrogen nebulae. The contrast between objects that emit H-alpha light and the background sky is greatly enhanced.
The full width at half maximum of 6 nanometres is perfectly suitable for use with cameras with particularly low dark current.
6nm filters are the best choice if you are observing from a location with extreme light pollution or photographing faint objects in regions of the sky with many stars.
Astronomik
Filters H-alpha 6nm CCD MaxFR 50mm
$ 800.00
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Filters H-alpha 6nm CCD MaxFR 2"
$ 800.00
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Filters H-alpha 6nm CCD Clip Canon EOS R XL
$ 620.00
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Filters H-alpha 6nm CCD MaxFR Clip Nikon XL
$ 820.00
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Filters H-alpha 6nm CCD MaxFR Clip Canon EOS R XL
$ 820.00
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Filters H-alpha 6nm CCD MaxFR Clip Sony alpha 7
$ 820.00
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Filters H-alpha 6nm CCD MaxFR Clip Canon EOS XL
$ 810.00
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Filters H-alpha 6nm CCD Clip Nikon XL
$ 590.00
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Filters H-alpha 6nm Clip Pentax K
$ 590.00
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Filters H-alpha 6nm CCD M49
$ 590.00
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Filters H-alpha 6nm CCD M52
$ 590.00
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Filters H-alpha 6nm CCD MaxFR 36mm
$ 467.00
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Filters H-alpha 6nm CCD MaxFR Clip Canon EOS APS-C
$ 467.00
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Filters H-alpha 6nm CCD 42mm, unmounted
$ 420.00
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Filters H-alpha 6nm XT Clip Canon EOS APS-C
$ 420.00
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Filters H-alpha 6nm CCD MaxFR 31mm
$ 397.00
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Filters H-alpha 6nm CCD Clip Canon EOS M
$ 350.00
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Filters H-alpha 6nm CCD MaxFR 1,25"
$ 315.00
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Filters H-Alpha 6nm 27mm CCD filter, unmounted
$ 233.00
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Filters H-alpha 6nm CCD Clip Sony alpha 7
$ 610.00
Transmission curve
What does CCD mean?
CCD filters also feature an integrated IR block. This is particularly important for photography, since although the camera sensors are sensitive to this long-wave spectral range, the upstream optical instruments (telescopes etc.) cause imaging errors in the infrared range.
Such optical errors do not play a role in purely visual observation, since the human eye anyway cannot perceive them. Of course, if you specifically want to shoot in the IR spectrum, you should not use a CCD filter.