Filter for bright deep-sky images
The Skywatcher CLS 2 helps you see faint objects more clearly. Artificial light from cities often makes the night sky bright and gray. This filter suppresses the distracting colors of street lights, but lets the light from stars and nebulae through. This keeps your image bright and contrasty, so you see more detail.

Easy to use
The filter fits any 2″ socket. You easily slide it into your eyepiece or filter holder. The sturdy aluminum mount holds the filter perfectly in place.

For visual and photographic work
Whether viewing or photographing, this filter improves the contrast of nebulae and galaxies. It is ideal for observers who often work in illuminated areas.
Compact and reliable
The CLS 2 filter is lightweight and easy to carry. You don't need any complicated installation. Within seconds you are ready to view bright deep-sky images.
Specifications
Capacity
| Feature | Description |
|---|---|
| Telescope connection | 2″ |
| Mount | 2″ |
| 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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