DIVISION I: COMMISSION 8: ASTROMETRY

Autor: Dafydd Wyn Evans, Norbert Zacharias, Irina Kumkova, Alexandre Andrei, Anthony Brown, Naoteru Gouda, Petre Popescu, Jean Souchay, Stephen Unwin, Zi Zhu

Publikováno v: Transactions of the International Astronomical Union, Series B
XXVIIIth IAU General Assembly
XXVIIIth IAU General Assembly, Aug 2012, Beijing, China. pp.87-94, ⟨10.1017/S1743921315005505⟩

International audience; The business meeting was opened by the President, Dafydd Evans, who presented the agenda, which was approved. It was agreed that Norbert Zacharias should be the secretary of the meeting and take the minutes. This session was a

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::b0c9a41e6d13cbc8f38fa3e3b8023afd
https://doi.org/10.1017/s1743921315005505

Optical astrometric positions of 59 northern ICRF radio sources

Autor: Petre Popescu, Octavian Badescu, Dan Alin Nedelcu, R. Vieira Martins, Marcelo Assafin, D. N. da Silva Neto, A. H. Andrei, Julio Camargo

Publikováno v: Astronomy and Astrophysics-A&A
Astronomy and Astrophysics-A&A, 2007, 476, pp.989-993. ⟨10.1051/0004-6361:20078441⟩

International audience; Context: To investigate the link between the International Celestial Reference Frame (ICRF) and its optical Hipparcos-based representation on the northern hemisphere. Aims: To present results of a pilot investigation on the as

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::6316269ebc4aaf7ccb3bfc9b51475591
https://doi.org/10.1051/0004-6361:20078441

A pilot astrometric survey of 59 northern ICRF radio-sources

Autor: Petre Popescu, Marcelo Assafin, Octavian Badescu, Dan Alin Nedelcu, Petre Paraschiv, Lubomir Iliev, Alexander Antov, Vasile Mioc, Cristiana Dumitrache, Nedelia A. Popescu

Publikováno v: AIP Conference Proceedings.

In the Bucharest Astronomical Observatory we started an observational program aiming at the improvement of positions for optical counterparts of ICRF radiosources by narrow‐field CCD observations and the accurate densification of the optical frame

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::2935a0c201da3b5536f7d5735e2ff8ee
https://doi.org/10.1063/1.2993633

Narrow field astrometry with different quality CCD cameras

Autor: Petre Paraschiv, Octavian Badescu, Dan Alin Nedelcu, Petre Popescu, Lubomir Iliev, Vasile Mioc, Cristiana Dumitrache, Nedelia A. Popescu

Publikováno v: AIP Conference Proceedings.

PROTEL (Polar Robotic Telescope) program involves studies and analyses for the correct choosing of the CCD detector. The performances of different CCD cameras were evaluated in tests performed in Belogradchik Observatory using the 60 cm Zeiss Telesco

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::39515b35645df4119e6026c375c5e6fc
https://doi.org/10.1063/1.2993634

Asteroid astrometry as a link between ICRF and the Dynamical Reference Frames

Autor: Petre Popescu, M. Birlan, D. A. Nedelcu, Petre Paraschiv, J. Souchay, Octavian Badescu

Publikováno v: IAU Symposium
A Giant Step: from Milli-to Micro-arcsecond Astrometry, IAU Symposium 248
A Giant Step: from Milli-to Micro-arcsecond Astrometry, IAU Symposium 248, Oct 2007, Shanghai, China, Nanjing, China. pp.328-329, ⟨10.1017/S1743921308019480⟩

Highly accurate astrometry of asteroids in the frame of QSOs will provide the direct link between the Dynamical Reference Frame and the International Celestial Reference Frame. We propose a procedure that implies a selection of events for asteroids w

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::06627c96faadca3434c969ccd8e09fa8
https://hal.science/hal-03734134