ΦΙΛΤΡΟ 6.5nm NARROWBAND 2" H-ALPHA CMOS-OPTIMIZED

Baader H-alpha 2" Narrowband-Filter (6.5nm) – CMOS-optimized

This new generation of Baader CMOS-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 designed to allow for 1:1:1 exposures, matched for typical CMOS quantum efficiency and s/n ratio
• Identical filter thickness to 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)
• Life-Coat™: evermore hard coatings to enable a non-aging coating for life – even in a most adverse environment