6.5 nm FWHM, recommended for extremely fast optical systems from f/3.4 to f/1.8
Specially designed for the special filter requirements when used with fast optics like the Celestron RASA astrographs
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
This new generation of Baader CMOS-filters features:
CMOS-optimized Baader Filters
Features
Increased contrast
Ever more narrow passbands
Reflex-Blocker™coatings, for largest ever freedom from halos, even under most adverse conditions concerning aux-optics
FWHM on each filter category carefully designedto allow for 1:1:1 exposures, matched for typical CMOS quantum efficiency and s/n ratio
Identical filter thicknessto existing standards, with utmost care for parfocality
Blackened edges all around, with filter-lead-side-indicator in the form of a black frontside outer rim, to additionally eliminate any reflection due to light falling onto the edge of a filter
Each filter coated individually, with sealed coating edge (NOT cut out of a larger plate with coatings left exposed,read more)
Life-Coat™:evermore hard coatings to enable a non-aging coating for life – even in a most adverse environment
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