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Pegasus Astro S II Photo Filter in 2" Cell

Name: Pegasus Astro S II Photo Filter in 2" Cell
Brand: Pegasus Astro
SKU: PEG-FLTR-2-S2
Price: 258.81 EUR

Narrow band line filter, useful for photographing emission nebulae in light-polluted skies

Blocks UV and IR to improve image sharpness and reduce halos in lens optics

Parfocal filter, no refocusing required when switching to other Pegasus filters

Multi-layer anti-reflection coating ensures no halos, ghosting or reflections. Filter is resistant to scratches and does not get affected by temperature change.

Manufacturer: Pegasus Astro

Product number: PEG-FLTR-2-S2

EUR 258,81

incl. 19 % VAT (DE)

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excl. 6.95 € shipping costs (DE)

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Pegasus Astro S II Photo Filter in 2" Cell

Narrow band line filter, useful for photographing emission nebulae in light-polluted skies

Blocks UV and IR to improve image sharpness and reduce halos in lens optics

Parfocal filter, no refocusing required when switching to other Pegasus filters

Multi-layer anti-reflection coating ensures no halos, ghosting or reflections. Filter is resistant to scratches and does not get affected by temperature change.

Details..
Technical data..
In the box..

Pegasus Astro S-II Photo Filter - 2" Cell

The narrowband line filters are useful for photographing emission nebulae in light-polluted skies.

This narrowband filter is centered on a wavelength of 672 nm, corresponding to [S II] emission line of the singly ionized sulfur, and has 7 nm bandwidth. This reduces the intensity 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 (i.e. skyglow).

Common features

Parfocal Filters: The filters are parfocal which ensures that you will not have to refocus when you quickly switch filters to capture images.

Anti-Reflection Coatings: Multi-layer anti-reflection coating ensure no halos, ghosting or reflections. Filters are resistant to scratches and do not get affected by temperature change.

Type:	Narrowband line filter
Transmission range:	Tave>80% around 672 nm, 7 nm FWHM
Parfocal with the other Pegasus filters:	Yes
Polish:	1/4 wavefront
Coatings:	Multilayer anti-reflection
IR blocking:	Yes
Shape:	Round
Filter Size:	2 inch
Thickness:	5 mm (filter) + 2.5 mm (thread)
Thread:	M48x0.75