Filters

OXYGEN III NARROWBAND FILTER - 1.25 IN
Save 17%
$107.95
$89.95

OXYGEN III NARROWBAND FILTER - 1.25 IN

Celestron

The 1-1/4" OIII narrowband filter isolates just the two doubly-ionized oxygen lines (496 and 501nm lines) emitted by planetary and emission nebula...

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$107.95
$89.95
Save 17%
OXYGEN III NARROWBAND FILTER - 2 IN
Save 19%
$148.95
$119.95

OXYGEN III NARROWBAND FILTER - 2 IN

Celestron

The 2" OIII narrowband filter isolates the two doubly-ionized oxygen lines (496 and 501 nm lines) Filter has ultra-hard, vacuum-deposited coating ...

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$148.95
$119.95
Save 19%

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