Sirius Oxygen (OIII) Filter 1.25in

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Sirius Oxygen (OIII) Filter 1.25in
AUD $99.00

Availability: Backorder Available

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The 1-1/4" OIII narrowband filter isolates just the two doubly-ionized oxygen lines (496 and 501nm lines) emitted by planetary and emission nebulae, while blocking the rest of the overall spectrum of light

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