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Filters > Nebulae filters > SII Filters > Astrodon > Narrowband > Astrodon Filters Filter SII 5nm 49.7 x 49.7 mm square unmounted
Product no.: 52963

Filters Filter SII 5nm 49.7 x 49.7 mm square unmounted

$ 2,540.00 incl. VAT, plus shipping costs
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Product description

In the case that this article currently is not available from the warehouse, please note the following: we order from this supplier in regular intervals. Please place your order now, so that we may take into account your order and deliver the article to you by the above-mentioned date.

Astrodon Narrowband filters set a new bar of performance and durability for imaging and research. The narrow 5 and 3 nm bandwidths enhance contrast of emission targets by lowering your background signal. The guaranteed >90% transmittance at the emission wavelength provides you with the highest signal available. This guaranty is expensive to manufacture for such spectrally narrow filters, but it assures you in writing on each filter box that you will get what you paid for. These two factors combine to provide you with the highest contrast available. Astrodon's latest narrowband filters are typically achieving >95-98% transmittance. Astrodon Narrowband filters are renowned for minimizing halos around bright stars, even for long exposures of 30-45 minutes typical of narrowband imaging in astrophotography. Astrodon Narrowband filters are coated to the edge of the part and are edge blackened. This is critical to minimize stray light for a filter that blocks most light except for the narrow bandpass.

Similar image: The product image shows different variations. Naturally, only one item will be sent.

Specifications

Capacity


Frame
unmounted
Mount material
Aluminium
Half-value width (nm)
5
Transmission
95
Filter Size (mm)
50 x 50

General


Series
Narrowband
Type
Filters
Type of build
line filter

Area of application


Visually useful
no
Anti light-pollution
yes
Useful for photographs
yes

Downloads

Astrodon Filters Filter SII 5nm 49.7 x 49.7 mm square unmounted

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