Astrometer
Definition
An astronomical measuring instrument used for the precise determination of angular positions, coordinates, and distances between celestial bodies in the night sky. Although historically the term defined filar micrometers or classic meridian circles used in astrometry, it can currently also designate the human specialists operating these complex mapping systems or automated scanning telescopes linked to sensor arrays.
Bilingual Equivalents
- Astrometer
- Astrometric instrument
Grammatical & Source Details
| Inflection Type | Masculine noun, regular plural structural forms used in physical instrumentation catalogs. |
| Formation | Derived through modern scientific compounding of the Greek elements 'astron' and the technical noun base '-meter'. |
| Spelling / Pronunciation | [æs.ˈtrɒm.ə.tər] |
| Source | Glossary of Astronomical Instrumentation and Positional Metrology Standards |
Contextual Usage Examples
RO: Inginerul a calibrat axele optice de la acel astrometru electronic pentru a elimina erorile de paralaxă instrumentală.
EN: The engineer calibrated the optical axes of that electronic astrometer to eliminate instrumental parallax errors.
RO: În cadrul observatorului vechi, un astrometru mecanic era montat direct pe luneta meridiană pentru a înregistra tranzitele.
EN: Within the old observatory, a mechanical astrometer was mounted directly on the meridian transit circle to record passes.
RO: Fiecare astrometru digital modern folosește grile microscopice gravate cu laser pentru a asigura o precizie extremă.
EN: Every modern digital astrometer uses laser-engraved microscopic grids to ensure extreme precision.
Idioms & Phrases
Astrometru electronic / Electronic astrometer
RO: Dispozitiv de măsurare automatizat dotat cu senzori optoelectronici capabili să citească poziția pixelilor pe o matrice CCD.
EN: An automated measuring device equipped with optoelectronic sensors capable of reading pixel positions on a CCD matrix.
Calibrare de astrometru / Astrometer calibration
RO: Procedură fizică și matematică de aliniere a grilei de măsură a aparatului cu polul ceresc real.
EN: A physical and mathematical procedure for aligning the measuring grid of the device with the real celestial pole.
Astrometru cu rețea / Grid astrometer
RO: Instrument prevăzut cu o mască de difracție sau rețea micrometrică utilizat pentru separarea stelelor binare strânse.
EN: An instrument equipped with a diffraction mask or micrometric grid used for separating close binary stars.
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