The 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, allowing for a more contrasted and detailed view of emission nebulae. Even under slightly lit skies, this filter reveals celestial objects otherwise invisible, such as the Cirrus nebula.

Features:

• Diameter: 1.25’’
• Blocks almost all artificial light
• Allows only the emission lines of oxygen to pass through
• Enhances the visibility of emission nebulae

Advantages:

• Optimizes clarity and contrast of observations under light-polluted skies
• Allows detection of details in nebulae 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 Explore Scientific O-III filter is an excellent choice for any astronomy enthusiast looking to improve their observations of emission nebulae and fully enjoy the beauty of the deep sky.