Baader Planetarium Triband-SCT 11"
Key specifications
| Aperture | 279.4 mm |
|---|---|
| Focal length | 2800 mm |
| Focal ratio | f/10 |
| Optical design | Schmidt-Cassegrain |
| Back focus | 139 mm |
| Weight | 13.1 kg |
About
A Celestron-based 11-inch Schmidt-Cassegrain whose Schmidt corrector carries a Triband-ERF coating (windows 380–400, 480–515 and 630–680 nm) that replaces a separate energy-rejection filter for H-alpha and CaK solar work, with ventilated heat shields; also usable for narrowband deep sky.