What limits the precision of ground-based stellar photometry and positional measurements?

• Published in: Кинематика и физика небесных тел
• Date: 2005
• Main Authors: Zhilyaev, B.E., Romanyuk, Ya.O., Verlyuk, I.A., Svyatogorov, O.A., Lovkaya, M.N.
• Format: Article
• Language: English
• Published: Головна астрономічна обсерваторія НАН України 2005
• Subjects: MS6: New Trends, Research Directions, and Perspective Programs in the Field of Astronomy and Astrophysics
• Online Access: https://nasplib.isofts.kiev.ua/handle/123456789/79715
• Journal Title: Digital Library of Periodicals of National Academy of Sciences of Ukraine
• Cite this: What limits the precision of ground-based stellar photometry and positional measurements? / B.E. Zhilyaev, Ya.O. Romanyuk, I.A. Verlyuk, O.A. Svyatogorov, M.N. Lovkaya // Кинематика и физика небесных тел. — 2005. — Т. 21, № 5-додаток. — С. 528-533. — Бібліогр.: 7 назв. — англ.

Nobody has reached the photometric precision better than 0.001 of a magnitude with ground-based telescopes. At the same time, we should spend barely some seconds of time to detect a million photons from any bright star and to attain a Poisson noise of one millimagnitude. The instrumental accuracy of...