O-III 2" nebula filter from Explore Scientific is an essential tool for observing emission nebulae. Designed to block almost all artificial light, this filter only allows the emission lines of oxygen to pass through, providing enhanced visibility of deep-sky objects, even under slightly illuminated skies. Ideal for observing nebulae like the Cirrus nebula, this filter is a perfect choice for improving the clarity and contrast of your observations.

• Features:

  • Diameter: 2’’
  • Blocks almost all artificial light
  • Only allows the emission lines of oxygen to pass
  • Enhances the visibility of emission nebulae

• Benefits:

  • Reveals hidden details of nebulae under light-polluted skies
  • Improves contrast and clarity for sharp and precise observations
  • Perfect for amateur astronomers wishing to observe deep-sky objects

• Compatibility:

  • Compatible with all 2’’ eyepiece holders

Discover new facets of nebulae with the O-III Explore Scientific filter, a must-have for sharper and more immersive observations.