Astronomik UHC-E 1.25" (M28.5)
Key specifications
| Filter type | Light Pollution |
|---|---|
| Passband | 465-530nm + above 645nm |
| Bandwidth | 45 nm |
| Filter size | 1.25" |
| 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. 1.25" M28.5 mount.