Omegon Deep Sky filter 1.25 inches

Omegon Deep Sky Filter 1.25″ is designed for visual deep-sky observations from locations where the sky is not completely dark. Consider the outskirts of a city or a moderately lit rural setting. This filter increases the contrast of nebulae and star clusters by selectively blocking interfering wavelengths of artificial light, while allowing lines important to astronomy - such as OIII and H-beta - to pass through.

Unlike narrowband filters such as a UHC or OIII filter, this broadband filter is designed for a balanced combination of light transmission and contrast enhancement. You preserve color and brightness of objects while darkening the background sky. This makes faint structures more visible without overly suppressing bright stars.

You screw the filter directly onto any 1.25″ eyepiece. This makes it an accessible upgrade for any beginner or advanced stargazer with a telescope from 100 to about 200 mm aperture.

Advantages
✓ Improves visibility of emission nebulae and star clusters
✓ Blocks disturbing light pollution from sodium and mercury lamps
✓ Just allow OIII and H-beta light to pass through
✓ Broad applicability at different telescope times
✓ Easy to use - fits any 1.25″ eyepiece

Specifications

• Type: Deep-sky contrast filter (broadband)
• Connection: 1.25 inches (31.75 mm)
• Mounting: Aluminum, black anodized
• Coating: Multiple anti-reflection coating
• Filter operation: Blocks artificial light, lets haze light through
• Suitable for: Visual observation of deep-sky objects
• Not suitable for: Moon, planets or astrophotography

Application
The Omegon Deep Sky Filter 1.25″ is ideally suited for observing emission nebulae such as the Orion Nebula, Veil Nebula and other HII regions. Open clusters and the Milky Way also benefit from its higher contrast. Ideal for observations from areas where completely dark skies are not available, but where you still want to get the most out of your telescope.