Vaonis Vespera CLS Filter: deep-sky astrophotography from the city
The Vaonis CLS (City Light Suppression) filter removes skyglow from your Vespera images. Street lighting based on sodium and mercury lamps emits at specific wavelengths; this filter blocks precisely those bands while letting the light from nebulae and galaxies pass through.
The result: darker backgrounds, less color cast, and more contrast on deep-sky objects, right from the city or a suburb.



Automatically recognized
Thanks to the integrated chip, the Vespera recognizes the filter as soon as you click it onto the station. The Singularity app automatically adjusts the image processing; you don't need to configure anything.

When do you choose CLS
The CLS filter is a broadband filter: it works on virtually all object types, including galaxies and star clusters. If you mainly photograph emission nebulae, the narrowband dual-band filter extracts even more contrast from them.
Included
- Vespera CLS filter with integrated chip
Featured accessories
For emission nebulae, the dual-band filter is the specialist; the CLS filter is the all-rounder for any light-polluted sky. Many Vespera owners use both, depending on the object.
For whom yes and for whom no
- ✓ Vespera owners in city or suburb photographing all object types
- ✓ Anyone who also wants to keep photographing by moonlight with fewer gradients in the background
- ✗ Anyone photographing under a dark sky: a light pollution filter adds little there
Specifications
| Suitable for | Vaonis Vespera series |
| Type | Broadband light pollution filter (CLS) |
| Blocks | Emission of sodium and mercury lighting |
| Recognition | Automatically, via integrated chip |
| Observation goals | Deep-sky photography under a light-polluted sky |
You can find more accessories for this merk at the Vaonis merk Page.







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