Filter against light pollution
The Skywatcher CLS 1 helps you see faint deep-sky objects more clearly. Artificial light from cities often makes the sky bright and gray. This filter suppresses the typical colors of street lights, while letting the light from stars and nebulae through. This keeps your image clear and rich in contrast.

Easy to use
The filter fits any 1.25″ socket. You simply slide it into your eyepiece or filter holder. Thanks to the aluminum mount, it sits securely and stays perfectly in place.

Ideal for visual and photographic use
Whether you are observing or photographing, the CLS 1 filter improves the contrast of nebulae and galaxies. It is a true all-rounder for observers often working in illuminated areas.
Compact and reliable
The filter is lightweight and easy to carry. You don't need any complicated installations. Within seconds you are ready to see clear images of deep-sky objects.
Specifications
Capacity
| Feature | Description |
|---|---|
| Telescope connection | 1,25″ |
| Mount | 1,25″ |
| Fasteners | Aluminum |
General
| Feature | Description |
|---|---|
| Type | Filters |
| Design | Broadband filters |
Application
| Feature | Description |
|---|---|
| Photographic use | Yes |
| Visually useful | Yes |
| Nebulae & galaxies | Yes |
| Anti light-pollution | Yes |







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