OPTOLONG
Suitable for photographing on faint emission nebulae in full moonlight or in severe light pollution, but also for obtaining narrowband tricolor images with the so-called "hubble look".
Available within 5-14 days
This includes products that we do not keep in stock but are only available on request or have been announced by the manufacturer. For orders of these items, a deposit is required, proportional to the total value of your order. As soon as we receive your order, we will notify you by e-mail or telephone, for the exact delivery time and the amount of the deposit.
Optolong S-II Deep-Sky Filter 6.5 nm, 2" Filter Cell
Extra Narrowband SII-CCD 6.5 nm filter is designed for nebula observation allowing 6.5 nm bandwidth of light centered on a wavelength of 672 nm through, which corresponds to the [S II] emission line, and reducing the transmission of certain wavelengths of light, specifically those produced by artificial light including mercury vapor, and both high and low pressure sodium vapor lights and the unwanted natural light caused by neutral oxygen emission in our atmosphere (skyglow).
Main Use and Performance
Aperture (mm) | 50.8 |
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