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Alstar 1.25 O-III Filter - Produces Near-Photographic Views of The Veil, Ring, Dumbbell and Orion Nebula, Among Many Other Objects
Each Alstar 1.25 O-III Filter is individually inspected and proudly inscribed with the percentage of light transmittance of the two O-III emission lines. Not only useful at light-polluted sites; the contrast is also increased at dark sky sites, can be used with all 1.25 eyepieces. Filter made from high-grade glass with dichroic interference and antireflection coatings. Completely blocks virtually all other visible wavelengths of light so views of nebulas are optimized. Increases contrast through selective filtration-Anti-reflection coated to prevent glaring and ghosting.

Price is $44.00
Price: $43.99