Q: Is a Ritchey-Chrétien telescope good for astrophotography?
A: Yes—RC telescopes are excellent for astrophotography. They are commonly used in professional observatories and high-end amateur imaging because:
- The coma-free and nearly flat field suits large CCD/CMOS sensors.
- No front corrector plate (unlike SCTs), which minimizes light loss and dew issues.
- Stable optical performance, even over long exposures.
However, RCs can be more difficult to collimate and more expensive than beginner scopes, so they’re best for intermediate to advanced users.