Optolong HA SII OIII Narrowband Telescope Filter Kit - 36mm

Name: Optolong HA SII OIII Narrowband Telescope Filter Kit - 36mm
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For tricolor CCD astrophotography
Narrowband imaging with SHO set can be done with the moon up in heavy light pollution, so your equipment is not sitting dormant for several weeks
Hubble look of images can be made by the combination of H-alpha, OIII-CCD, and SII-CCD, such as the famous “Pillars of Creation” (M16 Eagle Nebula)

Product Details

H-Alpha 7nm filter is the most popular narrowband filter allowing 7nm bandpass of light centered on a wavelength of 656nm. Extra narrowband SII-CCD 6.5nm and The OIII-CCD 6.5nm filters are designed for nebula observation allowing 6.5nm bandpass of light centered on a wavelength of 500nm (Oxygen-III) and 672nm (Sulfur-II) through, 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 (i.e. skyglow)
specifications

Bandpass 6.5nm

Bandpass 7nm

Filter Thickness 2mm

Filter Type H Alpha

Filter Type OIII

Filter Type SII

Free Shipping Yes

Shape Round

Size 36mm
included items
- H-alpha Filter
- SII Filter
- OIII Filter

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