Baader Planetarium 6.5nm Highspeed Filter Set – CMOS-Optimized (H-alpha / O-III / S-II)
Baader Planetarium 6.5nm Highspeed Filter Set – CMOS-Optimized (H-alpha / O-III / S-II)
Size
Focal Ratio
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Product Description
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, read more)
- Life-Coat™: evermore hard coatings to enable a non-aging coating for life - even in a most adverse environment
Size / F-Ratio Table
| Model (Size) | 1.25" | 2" | 31 mm | 36 mm | 50.4 mm | 50mmx50mm | 65mmx65mm |
| for f/1.8 to f/3.4 | 2961660 | 2961663 | 2961661 | 2961662 | 2961664 | 2961665 | 2961666 |
| for > f/3.4 | 2961650 | 2961653 | 2961651 | 2961652 | 2961654 | 2961655 | 2961656 |
Specifications
| Model (Size) | 1.25" | 2" | 31 mm | 36 mm | 50.4 mm | 50mmx50mm | 65mmx65mm |
| MANUFACTURER | Baader Planetarium | Baader Planetarium | Baader Planetarium | Baader Planetarium | Baader Planetarium | Baader Planetarium | Baader Planetarium |
| NET WEIGHT (KG) | 0.18 | 0.20 | 0.18 | 0.19 | 0.21 | 0.22 | 0.26 |
| TRANSMISSION RANGE | H-alpha / O-III / S-II | H-alpha / O-III / S-II | H-alpha / O-III / S-II | H-alpha / O-III / S-II | H-alpha / O-III / S-II | H-alpha / O-III / S-II | H-alpha / O-III / S-II |
| FILTER THICKNESS (WITHOUT CELL) | 2 mm | 2 mm | 2 mm | 2 mm | 3 mm | 3 mm | 3 mm |
| HBW (HALFBANDWIDTH) | 6.5 nm | 6.5 nm | 6.5 nm | 6.5 nm | 6.5 nm | 6.5 nm | 6.5 nm |
| CWL (CENTRAL WAVELENGTH) | 656.3 nm / 500.7 nm / 671.7 nm | 656.3 nm / 500.7 nm / 671.7 nm | 656.3 nm / 500.7 nm / 671.7 nm | 656.3 nm / 500.7 nm / 671.7 nm | 656.3 nm / 500.7 nm / 671.7 nm | 656.3 nm / 500.7 nm / 671.7 nm | 656.3 nm / 500.7 nm / 671.7 nm |
| AR-COATING | Reflex-Blocker™ hard coated, planeoptically polished | Reflex-Blocker™ hard coated, planeoptically polished | |||||
| SPECIAL FEATURES | CMOS-optimized with Life-Coat™ | CMOS-optimized with Life-Coat™ | CMOS-optimized with Life-Coat™ | CMOS-optimized with Life-Coat™ | CMOS-optimized with Life-Coat™ | CMOS-optimized with Life-Coat™ | CMOS-optimized with Life-Coat™ |
| FILTER SIZE | 1.25 inch | 2 inch | 31 mm | 36 mm | 50.4 mm | 50mmx50mm | 65mmx65mm |
| FILTER USAGE | CMOS, CCD, H-alpha, O-III, S-II | CMOS, CCD, H-alpha, O-III, S-II | CMOS, CCD, H-alpha, O-III, S-II | CMOS, CCD, H-alpha, O-III, S-II | CMOS, CCD, H-alpha, O-III, S-II | CMOS, CCD, H-alpha, O-III, S-II | CMOS, CCD, H-alpha, O-III, S-II |
| FILTER MOUNTED | Mounted (LPFC 6mm) | Mounted (LPFC 6mm) | Unmounted | Unmounted | Unmounted | Unmounted | Unmounted |
| TYPE OF FILTER | f/2 Highspeed | f/2 Highspeed | f/2 Highspeed | f/2 Highspeed | f/2 Highspeed | f/2 Highspeed | f/2 Highspeed |
| SINGLE OR SET? | Filter-Set | Filter-Set | Filter-Set | Filter-Set | Filter-Set | Filter-Set | Filter-Set |
| FILTER SHAPE | Round | Round | Round | Round | Round | Square | Square |
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