Omega Optical OIII 1.25" Nebular Filter (Pre-owned)
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The Omega Optical OIII 1.25" Nebular Filter is a high-quality narrowband filter designed to enhance the visibility of emission nebulae by isolating the doubly ionized oxygen (OIII) wavelength. This pre-owned filter is in great condition with only minor signs of previous handling, offering excellent optical performance for deep-sky observers.
By transmitting only the OIII emission lines while blocking most other wavelengths, this filter significantly increases contrast and detail when viewing nebulae such as the Veil, Lagoon, and Dumbbell. Built with precision coatings and durable materials, the Omega Optical OIII filter is an essential accessory for amateur astronomers who want to bring out faint structures in their observations.
Key Specs:
- Filter Type: OIII narrowband nebular filter
- Size: 1.25" (fits standard 1.25" eyepieces)
- Transmission: Passes doubly ionized oxygen (OIII) wavelengths while blocking unwanted light
- Construction: Precision optical glass with durable coatings
- Compatibility: Standard 1.25" telescope eyepieces and accessories
Use Cases:
- Enhancing contrast and structure of emission nebulae
- Improving visibility of faint objects under light-polluted skies
- Works with refractors, reflectors, and catadioptric telescopes using 1.25" eyepieces
- Ideal for both backyard observing and dark-sky trips