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Filter SII 7nm ZWO 2"
ZWOSII7_D2
Stock at Supplier
264.42
270.25
-5.83
VAT excluded
Shipping 5/7d
The 7 nm narrow band SII filter is designed for specific astrophotography at the 672 nm wavelength. It can be used in combination with the OIII and H-Alpha filters to create "Hubble-like" images. By selectively reducing the transmitted wavelengths, this filter suppresses the effects of street lighting.
Delivery Options
| Carrier | Description | Estimated Delivery | ||
|---|---|---|---|---|
 |
Home delivery - International | Home delivery - International |
Friday, 3 January - Friday, 10 January |
|
Home delivery - International
Home delivery - International
Estimated delivery:
Friday, 3 January - Friday, 10 January
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SII 7nm filter ZWO 2"
The extra-narrow band 7nm SII-CCD filter (Sulfur II for CCD) is designed for nebula photography by allowing the passage of light centered on the 672nm wavelength with a bandwidth of 7nm and blocking the transmission of all other wavelengths, specifically those produced by artificial light, including mercury vapor and high and low pressure sodium vapor lights and the unwanted natural light caused by the neutral emission of oxygen in our atmosphere (Skyglow).
Main use
Used in combination with H-alpha and OIII-CCD extra-narrowband filters (SHO set) for CCD tri-color astrophotography
Narrowband images with the SHO set can be made with the Moon in the sky or with strong light pollution, thus preventing your equipment from sitting idle for several weeks.
The Hubble appearance of the images can be made by combining H-alpha, OIII-CCD and SII-CCD, such as the famous "Pillars of Creation" (Eagle Nebula M16)
The narrow band filter does not increase the brightness of the object, but increases the contrast between the nebula and the night sky (without illuminating the nebula).
Usage:
- Visual observation (rural sky): Incompatible.
- Visual observation (urban sky): Incompatible.
- CCD photography: Excellent for nebula contrast enhancement.
- DSLR photography (unmodified): Good, although the sensitivity of unmodified sensors is reduced in the IBS spectral line.
- DSLR photography (modified): Excellent for contrast enhancement of nebulae.
- Planetary photography (from video clips): Uninteresting.
SII 7nm filter ZWO 2"
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