Antares 1.25" Vintage ALP LPR Light Pollution & UHC Filter Japan

In very good, used condition.

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. Threads into all 1.25" accessories.

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Only accessories listed in the photograph's are included with the purchase unless otherwise stated.

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