Results 101 to 110 of about 4,915 (213)

Astrometry of SiO Masers: First detections of circumstellar SiO maser emission at λ = 7 mm using three European VLBI stations [PDF]

open access: bronze, 1991
F. Colomer   +9 more
openalex   +1 more source

Photometric Analysis of Pi of the Sky Data

open access: yesActa Polytechnica, 2013
Two fully automatic Pi of the Sky detectors with a large field of view, located in Spain (INTA) and in Chile (SPDA) observe the sky in search of rare optical phenomena, and also collect observations which include many kinds of variable stars.
Rafał Opiela   +5 more
doaj  

Orbital period change of Dimorphos due to the DART kinetic impact. [PDF]

open access: yesNature, 2023
Thomas CA   +48 more
europepmc   +1 more source

Multi-functional star tracker — future perspectives

open access: yesActa Polytechnica, 2011
This paper focuses on the idea of a multi-functional wide-field star tracker (WFST) and provides a description of the current state-of-the-art in this field. The idea comes from a proposal handed in to ESA at the beginning of 2011.
J. Roháč, M. Řeřábek, R. Hudec
doaj  

Chromaticity in all-reflective telescopes for astrometry [PDF]

open access: green, 2006
D. Busonero   +4 more
openalex   +1 more source

Photometry and astrometry with JWST – III. A NIRCam-Gaia DR3 analysis of the open cluster NGC 2506 [PDF]

open access: bronze, 2023
D. Nardiello   +5 more
openalex   +1 more source

Determination of field distortion of astronomical telescopes by means of the simultaneous adjustment method

open access: yesRevista Técnica de la Facultad de Ingeniería, 2011
There are three ways to determine the field distortion produced by astronomical telescopes: a) the direct comparison of measured coordinates with theoretical coordinates derived of an astrometrical catalog of high precision: b) the analysis of the ...
Maria Jeanette Stock Leyton   +2 more
doaj  

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