Astronomik CLS CCD 36mm
Key specifications
| Filter type | Light Pollution |
|---|---|
| Passband | 450-520nm + 640-690nm |
| Filter size | 36mm |
About
A light-pollution filter for astrophotography that blocks the emission lines of sodium and mercury street lighting and natural airglow while passing a wide band, so stars are dimmed less than with a UHC. An integrated IR-blocking layer suits cameras without their own IR-cut filter. 36 mm round, with a protective ring.