You cant turn up the luminosity on nebulas but you can crank up the contrast between them and the sky to reveal more of their wondrous detail. Our Oxygen-III filter provides extremely selective filtration to bring out elusive detail in diffuse and... more
Serious observers who want the best views of all types of celestial objects should add this comprehensive Filter Set to their arsenal. Includes a variable polarizing filter, four planetary filters (#80A medium blue, #25 red, #58 green, and #15 deep... more
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