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SII (Sulfur) Filters

QSI - Astrodon 1.25" SII filter 3 nm FWHM

Astrodon Sulfur II filter with a FWHM of 3nm. For use with internal color filter wheel in QSI 500 Series cameras. This Ha filter is parfocal with Astrodon LRGB Gen2 olor filters ... Learn More

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(excludes AK & HI)
Model#: FL1-AD-SII3

$395.00
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QSI - Astrodon 1.25" SII filter 5 nm FWHM

Astrodon Sulfur II filter with a FWHM of 5nm. For use with internal color filter wheel in QSI 500 Series cameras. This Ha filter is parfocal with Astrodon LRGB Gen2 color filters ... Learn More

FREE SHIPPING
(excludes AK & HI)
Model#: FL1-AD-SII5

$275.00
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SBIG - Baader 36mm SII Filter for FW5-8300 Filter Wheel

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Model#: 36MM_SII

$150.00
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