The H-Beta 2" nebula filter from Explore Scientific is designed to enhance the observation of emission nebulae, particularly those associated with hydrogen. This filter blocks almost all artificial light and only allows the hydrogen emission lines at 486 nm to pass through, revealing celestial objects hidden under a polluted sky. Ideal for observing difficult-to-see nebulae, such as the Horsehead Nebula, this filter offers exceptional contrast and clarity, even with a slightly illuminated sky.

Features:

• Diameter: 2’’
• Blocks almost all artificial light
• Only allows hydrogen emission lines (486 nm) to pass through
• Enhances visibility of emission nebulae

Benefits:

• Enables observation of invisible nebulae without a filter, such as the Horsehead Nebula
• Increases contrast and sharpness of celestial objects under a slightly polluted sky
• Essential tool for amateur astronomers specializing in deep sky observation

Compatibility:

• Compatible with 2’’ eyepiece holders

This Explore Scientific H-Beta filter is perfect for astronomy enthusiasts looking to explore emission nebulae in detail, especially those dominated by hydrogen.