Filtro de alta qualidade h-alpha.
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Premium Grade H-alpha 7nm CCD Filter 1.25" (optically polished) from Baader Planetarium
Baader's new H-alpha CCD passfilter with medium 7nm-wide FWHM bandwidth is ideal for use with interline CCD cameras (although cannot be used on its own for protuberance imaging).
It comes with a non-aging efficient hard coating on a planeoptically polished surface. Ideal for fast optical systems between f/10 and f/2.8.
It will cause NO haloes and NO reflections. According to the spectral analyse (please see the image below) IR is blocked as well.
Premium Grade H-alpha 7nm CCD Filter 1.25" (optically polished) from Baader Planetarium
Baader's new H-alpha CCD passfilter with medium 7nm-wide FWHM bandwidth is ideal for use with interline CCD cameras (although cannot be used on its own for protuberance imaging).
It comes with a non-aging efficient hard coating on a planeoptically polished surface. Ideal for fast optical systems between f/10 and f/2.8.
It will cause NO haloes and NO reflections. According to the spectral analyse (please see the image below) IR is blocked as well.