Baader H-alpha 36mm f/2 (6.5nm) high speed filter – optimized for CMOS
Baader CMOS H-alpha f/2 High Speed Filter 36mm x 2mm - Precision Grade
6.5nm FWHM, recommended for extremely fast optical systems starting at f/3.4 and faster
Specially designed for special filter requirements when used with extremely fast f/2 optics such as Celestron RASA astrographs
Plano-optically polished, hard-coated Reflex-Blocker™ with sealed coating edges (Life-Coat™)
Blackened edges all around, with lead filter side indicator in the form of a black outer edge on the telescope side
Optimized for modern CMOS cameras, but also great for CCD camera technologies
The new generation of Baader filters optimized for CMOS is characterized by:
Baader filters optimized for CMOS
higher contrast
full widths even narrower at half maximum (FWHM)
Reflex-Blocker™ coatings for the highest possible insensitivity to retroreflection from the nearest auxiliary optics, even in the harshest conditions
Carefully designed FWHM for each filter category to allow 1:1:1 exposures tuned to typical CMOS quantum efficiency and signal-to-noise ratio
Filter thickness identical to existing standards, with the greatest care regarding homofocality
Blackened edges all around, with front filter indicator in the form of a black outer edge at the front to further prevent any reflection of light falling on the edge of the filter.
Each filter is individually polished and optically fine coated, with a sealed coating edge (NOT cut from a larger plate, with the result that the coating edges are exposed, see more on this here)
Life-Coat™ – even harder coatings to allow an aging resistant coating for unlimited life, even in the harshest environments
Especificaciones:
| MANUFACTURER | Baader Planetarium |
|---|---|
| SKU (#) | 2961152 |
| EAN CODE | 4047825047076 |
| NET WEIGHT (KG) | 0.06 |
| SUITABLE FOR F/RATIO | f/3.4 and faster |
| TRANSMISSION RANGE | H-alpha |
| FILTER THICKNESS (WITHOUT CELL) | 2 mm |
| HBW (HALFBANDWIDTH) | 6.5 nm |
| CWL (CENTRAL WAVELENGTH) | 656,3 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 |
| FILTER MOUNTED | Unmounted |
| TYPE OF FILTER | f/2 Highspeed |
| SINGLE OR SET? | Single Filter |
| FILTER SHAPE | round |
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