Ultra High Speed H-alpha Filter 50.4mm f/2 (3.5nm) – CMOS Optimized
Filtro de ultra alta velocidad Baader CMOS H-alpha f/2 de 50,4 mm x 3 mm - Grado premium
3,5 nm FWHM (para armonizar el tiempo de exposición con O-III/S-II), recomendado para sistemas ópticos extremadamente rápidos superiores a f/2,3
Especialmente diseñado para los requisitos de filtros especiales cuando se utiliza con ópticas f/2 de apertura extremadamente alta, como los astrógrafos RASA de Celestron.
Permite el contraste más alto incluso con la contaminación lumínica más fuerte, minimiza el tamaño de la estrella, hace accesible el detalle más fino de la nebulosa: indispensable bajo los cielos de Bortle 9/8/7/(6)
Reflex-Blocker™ con revestimiento duro y pulido planoópticamente, con bordes de revestimiento sellados (Life-Coat™)
Bordes ennegrecidos alrededor, con indicador frontal de filtro en forma de borde exterior negro en el lado del telescopio
Optimizado para cámaras CMOS modernas, igualmente adecuado para tecnologías de cámara CCD
€549.00
(VAT incl.)
Reference:
VK-2961379
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 (#) | 2961379 |
| EAN CODE | 4047825047724 |
| NET WEIGHT (KG) | 0.07 |
| SUITABLE FOR F/RATIO | < f/2.3 |
| TRANSMISSION RANGE | H-alpha |
| FILTER THICKNESS (WITHOUT CELL) | 3 mm |
| HBW (HALFBANDWIDTH) | 3.5 nm |
| CWL (CENTRAL WAVELENGTH) | 656,3 nm |
| AR-COATING | Reflex-Blocker™ hard coated, planeoptically polished |
| SPECIAL FEATURES | CMOS-optimized with Life-Coat™ |
| FILTER SIZE | 50.4 mm |
| FILTER USAGE | CMOS, CCD, H-alpha |
| FILTER MOUNTED | Unmounted |
| TYPE OF FILTER | f/2 Ultra-Highspeed |
| SINGLE OR SET? | Single Filter |
| FILTER SHAPE | round |
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