O-III 1,25" nebula filter from Explore Scientific is designed to enhance your deep-sky observations by blocking almost all artificial light. This filter only allows the emission lines of oxygen to pass through, thereby allowing you to visualize emission nebulas with more contrast and detail. Even under a slightly lit sky, this filter reveals celestial objects that would otherwise be invisible, such as the Cirrus nebula.

Features:

• Diameter: 1.25’’
• Blocks almost all artificial light
• Only allows the emission lines of oxygen to pass
• Enhances visibility of emission nebulas

Benefits:

• Optimizes clarity and contrast of observations under light-polluted skies
• Allows you to detect details of nebulas that would be invisible without a filter
• Ideal for amateur astronomers looking for better deep-sky observation performance

Compatibility:

• Compatible with 1.25’’ eyepiece holders

This O-III filter from Explore Scientific is an excellent choice for any astronomy enthusiast looking to enhance their observations of emission nebulas and fully enjoy the beauty of deep sky.