Antares Ultra High Contrast Nebula Filter

AntaresSKU: UHC
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Size: 1.25"
In stock (3 units), ships same day weekdays if ordered by 2pm EST!


UHC is a filter that blocks the visual spectrum except for wavelengths between 480nM and 510nM. Often called a Nebular or ALP (anti-light pollution) filter, this allow passage of ionized oxygen and hydrogen lines, but blocks light pollution reflectance from mercury and sodium vapor lamps. 

2" Filter is a Sky-Watcher filter

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