Baader H-alpha 65x65mm f/3 Ultra-Highspeed-Filter (3.5nm)
- 65 x 65 mm x 3 mm Baader CMOS H-alpha f/3 Ultra-Highspeed Filter - Premium Grade
- 3.5 nm FWHM (to harmonize the exposure time with O-III / S-II), recommended for fast optical systems from f/3.4 to f/2.3
- Specially designed for the special filter requirements when used with fast f/3 optics
- For highest contrast even at strongest light pollution, minimizes star size, emphasizes finest nebula detail - indispensable under Bortle 9/8/7/(6) skies
- Reflex-Blocker™ hard coated and planeoptically polished - with sealed coating edges (Life-Coat™)
- Blackened edges all around, with filter-lead-side-indicator in the form of a telescope-sided black outer rim
- Optimized for modern CMOS cameras, but likewise excellent for CCD camera technologies
For more information about, Baader H-alpha 65x65mm f/3 Ultra-Highspeed-Filter website.
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