Baader 6.5nm Narrowband-Filter-Set 36mm – CMOS-optimized (H-alpha / O-III / S-II
Baader 6.5nm Narrowband-Filter-Set 36mm – CMOS-optimized (H-alpha / O-III / S-II)
- 36 mm x 2 mm Baader CMOS H-alpha / O-III / S-II Narrowband Filter Set – Precision Grade
- 6.5 nm FWHM, recommended for optical systems from > f/3.4
- 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
The manufacturer explicitly warns against observing the sun with a DeepSky 6.5 nm (equivalent to 65 Ångstroem) H-alpha narrowband filter, specialized solar chromosphere and prominence filters from SolarSpectrum start at 0.8 Ångstroem. Photographic experiments with a camera are theoretically possible, but by no means observe the sun with naked eyes – you endanger your eyesight!
Full Description
This new generation of Baader CMOS-filters features:
- Increased contrast, matched for typical CMOS quantum efficiency and s/n ratio
- Reflex-Blocker™ coatings, for largest ever freedom from halos, even under most adverse conditions concerning aux-optics
- 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 telescope-sided black 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
DON´T BE MISLED.
These all new CMOS-optimized filters work magnificently with all existing digital camera technologies, be it CMOS or CCD. However – an owner of CCD-camera-technology will still find our previous, extremely affordable, narrowband filter technology to be fully apt for excellent imaging. But: "the Better always is enemy to the Good".
Specifications
MANUFACTURER Baader Planetarium SKU (#) 2961652 EAN CODE 4047825103918 NET WEIGHT (KG) 0.19 SUITABLE FOR F/RATIO > f/3.4 TRANSMISSION RANGE H-alpha / O-III / S-II FILTER THICKNESS (WITHOUT CELL) 2 mm HBW (HALFBANDWIDTH) 6.5 nm CWL (CENTRAL WAVELENGTH) 656,3 nm / 500,7 nm / 671,7 nm AR-COATING Reflex-Blocker™ hard coated, planeoptically polished SPECIAL FEATURES CMOS-optimized with Life-Coat™ FILTER SIZE 36 mm FILTER USAGE CMOS, CCD, H-alpha, O-III, S-II FILTER MOUNTED Unmounted TYPE OF FILTER Narrowband SINGLE OR SET? Filter-Set FILTER SHAPE round Related Items
