Astronomik Filters UHC-E 50x50mm filter, unmounted (52906)

Using the Astronomik UHC filter enhances your stargazing experience, allowing you to see more stars and finer details in deep-sky objects compared to filters from other manufacturers. This Ultra High Contrast (UHC) filter transmits nearly 100% of the light from O-III and H-beta spectral lines, while effectively blocking scattered light and artificial pollution. Although the H-alpha band is not intended for visual use, it becomes essential when paired with electronic devices. By reducing the sky background brightness, this filter reveals an unexpected wealth of detail in gas and planetary nebulae.

Optimized for Performance
The Astronomik UHC filter provides exceptional results even with small telescopes starting at 2" (50mm) aperture. Its high transmission ensures sufficient light for successful observations, while its design is optimized for telescope focal ratios between f/4 and f/15. Unlike other filters, it maintains sharp star images without chromatic distortion or transmission loss, except in extreme cases with focal ratios faster than f/2. The optical quality of the glass guarantees crisp, clear views comparable to observing without a filter.

Durability and Versatility
This filter features multi-layer coatings that are scratch-resistant, moisture-proof, and immune to aging effects. Its robust construction ensures long-lasting performance. Additionally, it is parfocal with other Astronomik filters, eliminating the need for refocusing when switching between filters.

Specifications:

• Passband: 465–530 nm & above 645 nm
• Frame: Unmounted, 50 x 50 mm size
• Coating: Multi-layered for durability

Applications
The Astronomik UHC filter is ideal for observing deep-sky objects under both dark skies and light-polluted conditions. It excels at reducing light pollution and performs exceptionally well in imaging applications when combined with additional filters such as IR-block filters.

With its superior performance, durability, and versatility, the Astronomik UHC filter is an essential tool for amateur and professional astronomers seeking enhanced contrast and detail in their observations and astrophotography.