Zobrazeno 1 - 10
of 21
pro vyhledávání: '"Johnny H. Kwok"'
Autor:
Tibor S. Balint, Jeffrey L. Hall, Johnny H. Kwok, David Senske, James A. Cutts, Mark A. Bullock, Craig E. Peterson, Elizabeth Kolowa
Publikováno v:
AIAA SPACE 2009 Conference & Exposition.
NASA’s Planetary Science Division recently commissioned a Science and Technology Definition Team to design a potential Venus Flagship mission. The team developed a list of various mission elements that could serve as parts of an overall mission arc
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::aabc6216b0fa1a09c164b596274ff23c
https://doi.org/10.2514/6.2009-6760
https://doi.org/10.2514/6.2009-6760
Publikováno v:
SPIE Proceedings.
This paper gives a description of the mission design, launch, orbit, and navigation results for the Spitzer space telescope mission. The Spitzer telescope was launched by the Delta II Heavy launch vehicle into a heliocentric Earth trailing orbit. Thi
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::54aa0becf47c2518834901f6332f19bc
https://doi.org/10.1117/12.551598
https://doi.org/10.1117/12.551598
Autor:
Charles R. Lawrence, Jeffrey H. Lee, Paul T. Finley, Peter Eisenhardt, Russell B. Schweickart, Johnny H. Kwok, Richard A. Hopkins, Jan G. Emming, Gregory B. Johnson, S. J. Nieczkoski, Thomas L. Roellig, J. Keene, Thomas N. Gautier, George Helou
The instruments of the Space Infrared Telescope Facility (SIRTF) are cooled directly by liquid helium, while the optical system is cooled by helium vapor. The greater the power dissipation into the liquid helium, the more vapor is produced, and the c
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::0e1eb8f6d8f1496a52d2436176a204e1
https://resolver.caltech.edu/CaltechAUTHORS:20190115-084104903
https://resolver.caltech.edu/CaltechAUTHORS:20190115-084104903
Autor:
Johnny H. Kwok, J. W. Miles
Publikováno v:
SPIE Proceedings.
The Space Infrared Telescope Facility (SIRTF) observatory is an 85-cm telescope with three cryogenically cooled instruments. Following launch, the observatory will be initialized and commissioned for routine operations during a sixty-day period calle
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::3802537ede00dbab0ec729748ff9e40f
https://doi.org/10.1117/12.461594
https://doi.org/10.1117/12.461594
Publikováno v:
SPIE Proceedings.
The Space Infrared Telescope Facility (SIRTF) will explore the birth and evolution of the Universe with unprecedented sensitivity. SIRTF will be the first mission to combine the high sensitivity achievable from a cryogenic space telescope with the im
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::4394fde3188b14021c4acf9cd2f96157
https://doi.org/10.1117/12.243516
https://doi.org/10.1117/12.243516
Autor:
Johnny H. Kwok, Michael G. Osmolovsky
Publikováno v:
SPIE Proceedings.
This paper describes a new mission concept for the Space Infrared Telescope Facility (SIRTF). In this new concept, SIRTF is launched with just enough energy to escape Earth's gravity. This trajectory is equivalent to a 1 astronomical unit (AU) solar
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::8789efc6f7cca1ab8f46d325976bd99e
https://doi.org/10.1117/12.157819
https://doi.org/10.1117/12.157819
Autor:
Johnny H. Kwok, Michael G. Osmolovsky
Publikováno v:
SPIE Proceedings.
The Space Infrared Telescope Facility (SIRTF) is the fourth in NASA's series of Great Observatories. It will feature a one-meter class cryogenically cooled telescope. It is planned for a NASA fiscal start for the development phase in 1994 with a laun
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::552bff89b9cda48a5956f28a20432bc0
https://doi.org/10.1117/12.48711
https://doi.org/10.1117/12.48711
Autor:
Peter E. Doms, Donna M. Wolff, Karen H. Robinett, John B. Carraway, William I. McLaughlin, Johnny H. Kwok
Publikováno v:
29th Aerospace Sciences Meeting.
The Space Infrared Telescope Facility (SIRTF) is the fourth in NASA's series of Great Observatories and will feature a one-meter class telescope in high earth orbit. Planned for launch around the turn of the century, the lifetime of this cryogenicall
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::9e15b44e5a73b6b7d3f468bcec3d87ec
https://doi.org/10.2514/6.1991-409
https://doi.org/10.2514/6.1991-409
Autor:
Johnny H. Kwok, Paul Nacozy
Publikováno v:
Celestial Mechanics. 35:289-303
Two families of symmetric periodic orbits of the planar, general, three-body problem are presented. The masses of the three bodies include ratios equal to the sun-Jupiter-Saturn system and the periods of the orbits of Jupiter and Saturn are in a 2:5
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::274433870ebd630a9dd2e054059d8949
https://doi.org/10.1007/bf01227658
https://doi.org/10.1007/bf01227658
Autor:
Paul Nacozy, Johnny H. Kwok
Publikováno v:
Celestial Mechanics. 24:269-287
In a paper by the second author (Nacozy, 1981), various time elements are presented for use with the Sundman time transformation. In that paper, the time elements are given in terms of Keplerian orbital elements. We give here the corresponding time e
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::a46ba29af8b0352ff5235c599632446b
https://doi.org/10.1007/bf01229558
https://doi.org/10.1007/bf01229558