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Optolong

Optolong 1.25" L-Extreme Dual Band 7nm Ha/OIII Light Pollution Filter

Optolong 1.25" L-Extreme Dual Band 7nm Ha/OIII Light Pollution Filter

Regular price $269.00 USD
Regular price $304.49 USD Sale price $269.00 USD
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Unleash the Power of the Cosmos with the Optolong 1.25" L-Extreme Dual Band 7nm Ha/OIII Light Pollution Filter – Elevate Your Astrophotography Experience!

Key Features:

  1. Dual-Band Pass Filter: The Optolong 1.25" L-Extreme Filter, designed for DSLR and CCD control, is a dual-band pass filter that isolates the H-Alpha and Oxygen III nebula emission lines. Tailored for one-shot color cameras and monochrome CCD cameras, this filter is the ideal companion for fast systems.
  2. Scientific Significance: Hydrogen, the cosmic cornerstone, constitutes more than 90% of visible substance in space. The L-Extreme Filter prioritizes the H-Alpha and Oxygen III emission lines, maximizing the contrast and signal-to-noise ratio for capturing rich emission nebulas. Its design is particularly advantageous for fast systems, providing a competitive and cost-effective solution.
  3. Light Pollution Solution: Combat light pollution effortlessly with the L-Extreme Filter. Unlike tri-band filters, this dual-band marvel transmits only Ha and OIII emission lines, ensuring no transmission between H-beta and OIII lines. The result? Maximum signal from nebulas and a darker sky background during imaging.

Advantages:

  • No Transmission Gap: Enjoy the advantage of no transmission between the H-beta and OIII lines, effectively preventing light pollution from infiltrating your images. The L-Extreme filter excels in isolating emission lines, providing unparalleled protection against unwanted interference.

  • Maximized Nebula Signal: Capture nebulas in all their glory, even in heavily light-polluted areas or under the moon's glow. The L-Extreme filter delivers exceptional isolation of emission lines, ensuring your images showcase the beauty of the cosmos.

Technical Specifications:

  • Size: 1.25 inch
  • Parallelism: 30''
  • Wavefront RMS: λ/4
  • Surface Quality: 60/40
  • Blocking Depth: Light pollution lines blocked >99.9%
  • Blocking Range: 300-1000nm
  • FWHM: O3 7nm + Ha 7nm
  • Thickness: 1.85mm
  • Substrate: B270

L-Extreme Spectrum:

Meticulously designed and optimized, the two 7nm narrowband filters in the L-Extreme Filter retain the prominent RGB color of nebulae while expertly blocking out light pollution. The spectrum ensures your astrophotography reaches new heights.

Embark on a celestial journey with the Optolong 1.25" L-Extreme Dual Band 7nm Ha/OIII Light Pollution Filter. Order now and witness the cosmos in unprecedented detail and clarity!

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