OTA · 1972–
Celestron C22 (Orange Tube)
Key specifications
| Aperture | 559 mm |
|---|---|
| Focal length | 5588 mm |
| Focal ratio | f/10 |
| Optical design | Schmidt-Cassegrain |
About
Rare vintage Celestron 22" Schmidt-Cassegrain from the original orange-tube line. One of the uncommon large/odd apertures Celestron offered before settling on the familiar 5/8/11/14" range.