Baader 35 nm Midband H-Alpha CCD Filter - 50.4 mm Round Unmounted

• The H-Alpha MidBand 35 nm CCD Filter by Baader Planetarium is an excellent high contrast deep sky red filter for RGB applications.

• The midband 35 nm wavelength is optimized for CCD chips in all interline cameras.

• The Baader 35 nm H-Alpha filter allows high-contrast CCD images of H II regions (eg North America Nebula) and works beautifully from "light polluted" environments.

• Baader Planetarium H-Alpha 35 nm CCD Filters share the same outstanding features as all other Baader imaging filters, including scratch and moisture resistant coatings that do not degrade with age.
• This 35nm Ha filter is 50.4 mm in diameter and unmounted. 

Baader Planetarium H-Alpha MidBand 35 nm CCD Filter allows for high-contrast deep sky images of the H-II regions. Ideal for interline CCD cameras, the 35 nm FWHM bandwidth of the H-Alpha filter makes this possible. For example, CCD cameras such as SBIG ST-2000/STL11000 are great to use with this filter. The lower sensitivity of interline transfer CCDs benefits from the more efficient 35 nm FWHM. Compared to common-colored glass base filters, the sharp bandpass and >90% high efficiency coatings make the Baader H-Alpha filter a superior choice. Like all Baader imaging filters, the H-Alpha filter shares all of the same outstanding features. It will produce the sharpest and highest contrast images possible, with your particular scope.