Equipment
双筒望远镜
Binoculars
Two short scopes side by side: wide field, easy to aim.
7×50 or 10×50 is the most useful first purchase.
Related terms
- Polar alignment — Pointing an equatorial mount at the celestial pole.
- Refractor vs reflector — Lens-based versus mirror-based telescopes.
- Star diagonal — The 90° eyepiece adapter on a refractor.
- Focal length — Distance from objective to focus.