Chroma SII 8nm Narrowband Filter - 31 mm

SKU : CF-SII8-31

$275

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Product Details

Chroma SII 8nm Narrow Band Filters are essential for imaging objects, like nebulae, that are rich in ionized sulfur atoms. These line emission filters work extremely well in heavy light-polluted areas and allow you image on nights when the moon is up.
specifications

Filter Shape Round

Filter Type SII

Free Shipping Yes

Size 31mm
included items
- Parfocal for systems f/4.0 or slower
- Transmitted wavefront better than 0.25 waves/inch
- Parallelism: less than 30 arcsec
- Made in the U.S.A.
- H-Alpha 8nm Narrow Band Filter

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