The Celestron C5 birdwatching telescope manual provides assembly, operation, maintenance, collimation and warranty information.
The C5 birdwatching telescope is a compact Schmidt‑Cassegrain instrument designed for ground and astronomical observation, delivering a fully erect image. This manual guides you through safe setup, basic operation, and optional accessories such as eyepieces and finderscopes.
Detailed sections cover step‑by‑step assembly, focusing, routine cleaning, optical axis collimation, and the one‑year warranty terms, helping both beginners and experienced users achieve optimal performance. This manual is written in Chinese.
| Aperture | 125 mm (5 in) |
|---|---|
| Focal length | 1250 mm |
| Optical design | Schmidt‑Cassegrain |
| Resolution | 0.9 arc‑seconds |
| Tube length | 280 mm |
| Weight | 2.7 kg |
| Finder scope | 6 × 30 mm |
| Minimum focus distance | 6 m |
| Field of view (with standard eyepiece) | 1.04 ° |
No. The manual explicitly forbids direct solar observation with the C5, as it can cause permanent eye damage.
First loosen the lock screw on the eyepiece base, insert the chrome‑metal part of the erecting prism, then tighten the lock screw to secure it.
Use a bright star, defocus until a black‑shadow ring appears, then adjust the collimation screws in small increments until the diffraction pattern is concentric.
Celestron provides a one‑year free warranty from the date of purchase, covering manufacturing defects.