kính định tinh
Definition
- Noun (Astronomy):
- Sidereal stat: An optical instrument, specifically a type of mirror mounted on an equatorial mount, designed to reflect light from a celestial object along a fixed axis. It compensates for the Earth's rotation, allowing the object to be observed in a stationary position.
- Fixed mirror telescope: A telescope that uses a movable mirror to direct starlight into a fixed, often stationary, instrument.
Usage Examples
- Noun:
- Kính định tinh được sử dụng để quan sát Mặt Trời một cách an toàn. (The sidereal stat is used to observe the Sun safely.)
- Nhờ có kính định tinh, ánh sáng từ các ngôi sao được dẫn vào phòng thí nghiệm cố định. (Thanks to the fixed mirror telescope, light from stars is directed into a fixed laboratory.)
Advanced Usage
- The term is technical and primarily used in professional astronomical contexts. It often refers to instruments in observatories designed for specific, long-term studies of stellar phenomena.
Variants and Related Words
- Kính thiên văn (n): Telescope (a general term for optical instruments used to observe distant objects).
- Kính viễn vọng (n): Telescope (another common general term).
Synonyms
- Sidereal stat: The direct technical equivalent.
- Fixed mirror telescope: A descriptive synonym explaining its function.
Related Terms
- Equatorial mount: The type of mounting system that allows the to track celestial objects by rotating parallel to the Earth's axis.
- Coudé focus: An optical arrangement in telescopes where light is directed to a fixed focal point, often associated with the function of a .