limitation articles
What is the single greatest adversary to high astrometric precision for ground-based telescopes?
What becomes the primary limitation on astrometric precision when telescopes escape Earth's atmosphere?
How is the error in proper motion measurement related to the total observation span?
Which objects form the foundation of the International Celestial Reference Frame (ICRF)?
How do distance errors grow as the target star moves farther away when using parallax?
Which techniques are used to mitigate distortions caused by atmospheric turbulence ('seeing')?
What systematic error is created by a slow, steady warping of the primary mirror cell over a mission?
Since astrometry is inherently relative, what determines the accuracy of any single measurement?
What technique defines the International Celestial Reference Frame (ICRF) and introduces inherent uncertainties?