Zobrazeno 1 - 10
of 11
pro vyhledávání: '"Cheryl D. Alexander"'
Autor:
Steven D. Pavelitz, Kiranmayee Kilaru, Jeffery E. McCracken, J. Kolodziejczak, Chet O. Speegle, Bruce Weddendorf, Brian D. Ramsey, S. Bongiorno, Ronald Elsner, Cheryl D. Alexander, Javier Sanchez, Stephen L. O'Dell, Jaganathan Ranganathan, Ikuyuki Mitsuishi, W. H. Baumgartner
Publikováno v:
Optics for EUV, X-Ray, and Gamma-Ray Astronomy IX.
Expected to launch in 2021 Spring, the Imaging X-ray Polarimetry Explorer (IXPE) is a NASA Astrophysics Small Explorer Mission with significant contributions from the Italian space agency (ASI). The IXPE observatory features three identical x-ray tel
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::a9d4205dbaa629d40475891c5ddc2b6d
https://doi.org/10.1117/12.2531956
https://doi.org/10.1117/12.2531956
Autor:
Jeffery J. Kolodziejczak, Brian D. Ramsey, Martin C. Weisskopf, Jeff Apple, Ronald F. Elsner, Darell Engelhaupt, C. M. Benson, Cheryl D. Alexander, Kurtis L. Dietz, Douglas A. Swartz, Kajal K. Ghosh, Chet O. Speegle, Stephen L. O'Dell
Publikováno v:
The Astrophysical Journal. 568:432-435
We are developing a balloon-borne hard-x-ray telescope that utilizes grazing incidence optics. Termed HERO, for High-Energy Replicated Optics, the instrument will provide unprecented sensitivity in the hard-x-ray region and will achieve milliCrab-lev
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::2683cd527383c715cb5c97924d1f3f57
https://doi.org/10.1086/338801
https://doi.org/10.1086/338801
Publikováno v:
SPIE Proceedings.
We are developing grazing-incidence x-ray imaging optics for a balloon-borne hard x-ray telescope (HERO). The HERO payload, scheduled for launch in May 2005, currently consists of 8 mirror modules each containing 12 mirror shells fabricated using ele
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::649874f5e90e92cbcc0d8bba6b4bcb9d
https://doi.org/10.1117/12.614997
https://doi.org/10.1117/12.614997
Autor:
Brian Ramsey, Chet O. Speegle, Jeffery J. Kolodziejczak, Ronald F. Elsner, Stephen L. O'Dell, Martin C. Weisskopf, Cheryl D. Alexander, Jeff Apple, Douglas A. Swartz, Kurtis L. Dietz, C. M. Benson, K. K. Ghosh, Darell Engelhaupt
Publikováno v:
SPIE Proceedings.
HERO is a balloon payload featuring shallow-graze angle replicated optics for hard-x-ray imaging. When completed, the instrument will offer unprecedented sensitivity in the hard-x-ray region, giving thousands of sources to choose from for detailed st
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::54b98368e686514912d74b3c8725ed9a
https://doi.org/10.1117/12.454369
https://doi.org/10.1117/12.454369
Autor:
Stephen L. O'Dell, Jeff Apple, Darell Engelhaupt, Kurtis L. Dietz, C. M. Benson, Jeffery J. Kolodziejczak, Ronald F. Elsner, Douglas A. Swartz, Chet O. Speegle, Robert A. Austin, Brian D. Ramsey, G. Zirnstein, Martin C. Weisskopf, Cheryl D. Alexander
Publikováno v:
SPIE Proceedings.
We are developing high-energy grazing-incidence replicated optics for a balloon-borne hard-x-ray telescope. When completed, the instrument will have 170 cm2 of effective collecting area at 40 keV and 130 square cm at 60 keV with
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::30ced50f9202395852a0c24fba3b05fe
https://doi.org/10.1117/12.407554
https://doi.org/10.1117/12.407554
Autor:
Carolyn A. MacDonald, Christine H. Russell, Suparmi, Sushil D. Padiyar, Marshall Joy, Walter M. Gibson, Cheryl D. Alexander, Zewu Chen, Padiyar Cari
Publikováno v:
Advances in Laboratory-based X-Ray Sources and Optics.
Polycapillary fibers and a prototype collector for high energy x rays with a 2 m focal length have been fabricated and characterized. Measurements of a prototype collector, performed in collimating mode, show that the optic has high transmission, goo
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::8160450e62845540e665f9e5a33c8f60
https://doi.org/10.1117/12.405898
https://doi.org/10.1117/12.405898
Autor:
John E. Carlstrom, Cheryl D. Alexander
Publikováno v:
SPIE Proceedings.
A new high frequency image-rejection mixer was successfully tested in a 26-36 GHz band receiver. This paper briefly describes the motivation for implementation of an image rejection mixer in a receiver system, the basic operation of an image rejectio
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::7be422e971d1fbace7de45bb671d7f30
https://doi.org/10.1117/12.370152
https://doi.org/10.1117/12.370152
Publikováno v:
SPIE Proceedings.
This paper describes the design of a camera system capable of acquiring stars during both the day and night cycles of a high altitude balloon flight (35-42 km). The camera system will be filtered to operate in the R band (590-810 nm). Simulations hav
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::590fd9779586faac4b416aa4214c5c19
https://doi.org/10.1117/12.368236
https://doi.org/10.1117/12.368236
Publikováno v:
Optical Engineering. 41:2641
We have designed, built, and flight-tested a new star camera for daytime guiding of pointed balloon-borne experiments at altitudes around 40 km. The camera and lens are commercially available, off-the-shelf components, but require a custom-built baff
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::9aa6a07e4b5a8cf69b5d91117d002016
https://doi.org/10.1117/1.1501566
https://doi.org/10.1117/1.1501566
Conference
Tento výsledek nelze pro nepřihlášené uživatele zobrazit.
K zobrazení výsledku je třeba se přihlásit.
K zobrazení výsledku je třeba se přihlásit.