Lot · Telescope Filters
Optolong L Ultimate 1.25 Inch. Perfect Condition. Used Once.
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Sun · May 17, 2026
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ZIP 890**
pjostet
442 ratings · 100.00% positive
Description
From the sellerThe L-Ultimate is a 3nm dual band filter designed to drastically reduce the effect of light pollution. The 3nm isolates the nebulae's emissions into H-Alpha (red) and OIII (green-blue). It blocks light pollution, maximizes the signal from nebulae, and darkens the sky background.
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