Results 181 to 190 of about 6,728 (225)

Optical frequency comb integration in radio telescopes: advancing signal generation and phase calibration. [PDF]

Light Sci Appl
Hyun M, Ahn C, Choi J, Baek J, Jeong W, Je DH, Byun DY, Wagner J, Heo MS, Jung T, Kim J.   +10 more
europepmc   +1 more source

Analysis of polarization aberrations of the off-axis pupil freeform optical system. [PDF]

iScience
Gong C, Zhang Y, Liu W, Wang J, Fu Q, Shi H.   +5 more
europepmc   +1 more source

JWST Detects Silane in a Cold Low-Metallicity World

Faherty J, Meisner A, Burningham B, Visscher C, Suarez G, Gagne J, Merchan SA, Rothermich A, Line M, Burgasser A, Schneider A, Caselden D, Kirkpatrick D, Kuchner M, Gagliuffi DCB, Eisenhardt P, Gelino C, Gonzales E, Marocco F, Leggett S, Lodieu N, Casewell S, Tremblin P, Cushing M, Osorio MRZ, Béjar V, Gauza B, Wright E, Phillips M, Zhang J, Martín E.   +30 more
europepmc   +1 more source

Extended hot dust emission around the earliest massive quiescent galaxy

Ji Z, Williams C, Rieke G, Lyu J, Alberts S, Sun F, Helton J, Rieke M, Shivaei I, D'Eugenio F, Tacchella S, Robertson B, Zhu Y, Maiolino R, Bunker A, Sun Y, Willmer C.   +16 more
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24. Photographic Astrometry (Astrometrie Photographique)

Transactions of the International Astronomical Union, 1988
One of the continuing problems facing Commission 24 is its name. It has been known and reported for some years that the present title is not suitable for reasons that are all too obvious. This problem has continued during the last three years, despite the growing development and use of non-photographic methods and techniques.Most of the recent meeting ...
Arthur R. Upgren, William F. van Altena, A. N. Argue, T. E. Corbin, Ch. de Vegt, W. Gliese, I. I. Kanaev, T. E. Lutz, J. Stock   +8 more
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Photographic Astrometry (Astrometrie Photographique)

1991
Despite some much publicized disappointments, the highlights of Astrometry during the past three year period are dominated by the successful launches of the ESA Hipparcos astrometric satellite and the NASA Hubble Space Telescope. For the past 15 to 20 years the research activities of many Commission members have been monopolized by the design and ...
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SPACE ASTROMETRY MISSIONS

EAS Publications Series, 2002
The successful hipparcos mission has brought, and proved the validity of, a new observational concept to achieve absolute measurements of star positions in space. Only five years after the final publication of the results there are now four astrometry missions scheduled for the next decade, three of which appearing as the natural ...
F. Mignard, S. Roeser
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Relativistic Astrometry

Astrophysics and Space Science, 1985
Michael Soffel, Joachim Schastok, Hanns Ruder, Manfred Schneider   +3 more
openaire   +1 more source