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Saturn 7 August 2020

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Lumicon Premium Deep Sky Back Filter

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Excellent Condition, Label on original box reads;
DEEP SKY FILTER, For Nebulae and Galxies
Lumicon Visual Back Filter/Dust Seal
Filter Transmission:
Hydrogen-Beta 486nm 93%
Oxygen III 501nm_92%
Hydrogen-Alpha 656nm_92%
Premium 496nm_93%
  • Intended for viewing nebulae from light-polluted skies
  • Blocks all mercury vapor, and high and low pressure sodium vapor lamp light, neon lights and airglow, while transmitting the rest of the visible spectrum
  • The best all-around visual light pollution filter for use in urban skies
  • This filter also provides high-contrast views of the Martian polar caps
  • Each Lumicon Deep Sky Filter is individually inspected and proudly inscribed with the percentage of light transmittance of the H-Alpha, H-Beta and OIII emission lines.
  • The Deep Sky Filter also passes infrared light, making it an excellent filter for photographing deep space objects through light-polluted skies.¬†
  • Buyer pays freight and PayPal fees.