Baader H-Beta 5.5nm 1¼" Narrowband Filters Optimized for CMOS
This new generation of Baader CMOS filters features:
- CMOS-optimized Baader filters
- Increased contrast
- Increasingly narrower pass bands
- Reflex-Blocker ™ coatings, for the greatest freedom from halos, even in the most adverse conditions related to auxiliary optics
- FWHM in each filter category carefully designed to allow 1: 1: 1: 1 exposures, combined for typical CMOS quantum efficiency and s/w ratio
- Filter thickness identical to existing standards, with extreme care for parafocality
- Blackened edges all around, with filter lead-side indicator in the form of a black outer edge on the front side, to additionally eliminate any reflections due to light falling on the edge of a filter
- Each filter individually coated, with sealed coating edge (NOT cut from a larger plate with exposed coatings)
- Life-Coat ™: increasingly harder coatings to allow for a coating that will not age for life, even in the harshest environment
Summary key features:
- 1¼" x 2 mm Baader H-Beta narrow band filters - Precision grade - with 1¼" (28.5 mm) filter thread
- 5.5 nm FWHM, recommended for f/10 to f/3.5 optical systems
- Reflex-Blocker ™ hard-coated and planoptically polished, with sealed coating edges (Life-Coat ™)
- Blackened edges all around, with filter lead-side indicator in the form of a black outer edge on the front side
- Optimized for modern CMOS cameras, but excellent for CCD camera technologies
- Mounted on Baader low profile filter cell (LPFC) - 6 mm high
MANUFACTURER Baader Planetarium
NET WEIGHT (KG) 0.06
COLOR Black
TRANSMISSION RANGEH-Beta
FILTER THICKNESS (WITHOUT FILTER CELL) 2 mm
HBW (HALF-BANDWIDTH) 5.5 nm
CWL (CENTER WAVELENGTH) 486.1 nm
AR-COATING Reflex-Blocker ™ hard-coated, planoptically polished
SPECIAL FEATURES CMOS optimized with Life-Coat ™
FILTER SIZE1.25 in.
FILTER USAGE CMOS, CCD, H-Beta
FILTER MOUNTED Mounted (LPFC 6 mm)
FILTER TYPENarrowband
SINGLE OR CONJUNCTIVE? Single Filter
FILTER SHAPE Round
Narrowband Baader H-Beta 5.5nm 1¼" Narrowband Filters Optimized for CMOS
