H-Beta Filter 1.25"
This high performance CCD filter transmits only the Hydrogen Beta emission line. Therefore, it greatly increases the contrast of objects that glow in the corresponding region of the spectrum (ie. The Horsehead, Cocoon and California nebulae).
The H-BETA CCD filters are available in 1.25" and 2" sizes.
These filters are recommended for capturing H-beta emitting objects using CCD photography under dark skies. Excellent for viewing H-beta emitting objects under dark sky.
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