Astronomik UHC-E SC Rear Cell (2" / 24TPI)
Key specifications
| Filter type | Light Pollution |
|---|---|
| Passband | 465-530nm + above 645nm |
| Bandwidth | 45 nm |
| Filter size | Other |
| Mounted | Yes |
About
A wider-passband companion to the UHC, aimed at emission nebulae and comets under light-polluted skies with telescopes up to 5" of aperture. Its 45 nm FWHM passes more starlight than the UHC while still blocking typical streetlight emissions and airglow. This is the version that threads onto a Schmidt-Cassegrain rear cell.