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Filtro > Filtros de niebla > Filtro SII > Astronomik > SII CCD > Astronomik Filtro de clip SII CCD EOS XL
Nº de producto: 43707

Filtro de clip SII CCD EOS XL

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Descripción del producto

La descripción de este producto no está disponible en español. Esperamos que la versión en inglés le sea de utilidad. En cualquier caso, sentimos las molestias.

Astronomik SII 12nm Filter

The Astronomik SII-CCD filter is a narrow-band-filter for CCD photography.The filter lets the light of the ionized sulfur (SII) pass, and blocks nearly the whole remainder of the visual spectrum as well as IR, in which the CCD is sensitive.

We have re-desgined all of our photographic filters. Since the end of 2008 we are shipping our new "Halo-Free" filters.

The full width at half maximum (FWHM) of 12nm is optimal suitable for common CCD cameras and allows the use of very fast optics. The range of application extends from 1:2.8 to 1:15. Transmission losses and chromatic distortions, which arise with other filters, only occur with Astronomik filters when extremely bright aperture ratios of 1:2 and more come into play. It should be noted, that the filter has a transmission of up to 99%.

Another advantage of the 12nm filters is the good availability of guiding stars for cameras with a built-in-autoguider (SBIG). If you use a very strong filter like our 6nm filter you often won't find a usable guidestar.

The Astronomik SII CCD filter increases the contrast between objects, in this case between those with SII emission lines and the skyglow background. Also, our Astronomik SII-CCD filter completely suppresses the emission lines of artificial lighting (mercury (Hg) and sodium (Na)) and skyglow.

Main use

The Astronomik SII CCD increases the contrast between objects, in this case between the SII emission line and the skyglow background. Our Astronomik SII CCD completely suppresses the emission lines of artificial lighting (mercury (Hg) and sodium (Na)) and skyglow. Due to the high optical quality of the Astronomik H-alpha-CCD substrate you will see the same needle-sharp stars as you would from your regular telescope.

Please note: In principle, all camera lenses can be used with the Clip-Filter - i.e. Canon EF lenses or camera lenses from other third party manufacturers such as Sigma, Tamron, Tokina, Walimex etc. However, the use of clip-filters with Canon EF-S lenses is NOT possible!

Especificaciones

Capacidad


Anchura a media altura
120
Bonificación de los elementos ópticos
múltiple
Conexión
EOS Clip
marco
Clip Filtros
Idóneo para...
Canon EOS

En general


Serie
SII CCD
Tipo
Filtro
Tipo de construcción
filtro de línea

Aplicaciones


Apto para fines fotográficos
Contra contaminación lumínica
Astronomik Filtro de clip SII CCD EOS XL
Curva de transmisión

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