Zobrazeno 1 - 10 of 15 pro vyhledávání: '"L. W. Fredrick"'
1
The Distance to the Hyades Cluster Based on [ITAL]Hubble Space Telescope[/ITAL] Fine Guidance Sensor Parallaxes
Autor: W. F. van Altena, C. -L. Lu, J. T. Lee, T. M. Girard, X. Guo, C. P. Deliyannis, I. Platais, V. Kozhurina-Platais, B. McArthur, G. F. Benedict, R. L. Duncombe, P. D. Hemenway, W. H. Jefferys, J. R. King, E. Nelan, P. S. Shelus, D. Story, A. Whipple, O. G. Franz, L. Wasserman, L. W. Fredrick, R. B. Hanson, A. R. Klemola, B. F. Jones, R. Méndez, W.-S. Tsay, A. Bradley
Publikováno v: The Astrophysical Journal. 486:L123-L127
Trigonometric parallax observations made with the Hubble Space Telescope's Fine Guidance Sensor #3 (HST FGS) of seven Hyades Cluster members in six fields of view have been analyzed along with their proper motions to determine the distance to the clu
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::8893d2fb29ea747325cc254ad03196e7
https://doi.org/10.1086/310856
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2
Astrometry with the HST Planetary Camera
Autor: T. M. Girard, Y. Li, W. F. Van Altena, J. M. Nunez, G. F. Benedict, R. L. Duncombe, P. D. Hemenway, W. H. Jefferys, B. McArthur, J. McCartney, E. Nelan, P. Shelus, D. Story, A. L. Whipple, O. G. Franz, L. W. Wasserman, L. W. Fredrick
Publikováno v: Symposium - International Astronomical Union. 166:101-106
The astrometric capability of the Hubble Space Telescope Planetary Camera (WF/PC1) is investigated, motivated by a study of the internal velocity distribution of globular clusters. The astrometric accuracy of the HST PC will be determined ultimately
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::05a126938919707626eb635baede40c0
https://doi.org/10.1017/s0074180900227927
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3
Interferometric Astrometry with Hubble Space Telescope Fine Guidance Sensor 3:The Parallax of the Cataclysmic Variable TV Columbae
Autor: B. E. McArthur, G. F. Benedict, J. Lee, W. F. van Altena, C. L. Slesnick, J. Rhee, R. J. Patterson, L. W. Fredrick, T. E. Harrison, W. J. Spiesman, E. Nelan, R. L. Duncombe, P. D. Hemenway, W. H. Jefferys, P. J. Shelus, O. G. Franz, L. H. Wasserman
TV Columbae (TV Col) is a 13th magnitude Intermediate Polar (IP) Cataclysmic Variable (CV), with multiple periods found in the light curves. Past estimates predicted a distance of 400 parsec to greater than 500 parsec. Recently completed Hubble Space
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::996595e52f4272e9c8780a0d02175048
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5
Astrometry with the Large Space Telescope
Autor: W. F. van Altena, O. G. Franz, L. W. Fredrick
Publikováno v: Symposium - International Astronomical Union. 61:283-292
The Large Space Telescope (LST), planned to be launched in 1980, will give an opportunity for astrometric observations of high quality to be secured.A detailed survey is presented of the potentialities of the LST for studies of proper motions, parall
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::1950b79ecf92cb7b4a6301dc60746d67
https://doi.org/10.1017/s0074180900069989
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6
Some Astronomical Uses of Image Intensifying Tubes
Autor: W.A. Baum, W. K. Ford, J.S. Hall, L. W. Fredrick
Publisher Summary This chapter discusses some astronomical uses of image intensifying tubes. The specific tube requirements must depend upon the type of problem which a person wishes to attack. The astronomer's general requirements are gain and resol
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::777026401c9044478343f9e396860756
https://doi.org/10.1016/s0065-2539(08)61171-3
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