Proceedings ArticleDOI
Development of a three-channel SWIR camera, for ground-based astronomical imaging. (Two micron all sky survey, 2MASS)
Scott Milligan,Brian W. Cranton,Michael F. Skrutskie +2 more
- Vol. 2863, pp 2-13
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In this paper, the authors present a detailed analysis of the optical design of the 2MASS camera, and discuss the techniques used to align the instrument and evaluate its performance, and demonstrate the performance of the camera optics within the cold volume.Abstract:
The two micron all sky survey (2MASS) project, currently underway, requires a camera mated to a 13 meter Cassegrain telescope that will simultaneously image the J, H and Ks spectral bands onto three separate NICMOS3 HgCdTe detector arrays Dichroic beamsplitters allow the three FPAs to view the same field simultaneously This paper reviews the development of this camera, presents a detailed analysis of the optical design, and discusses the techniques used to align the instrument and evaluate its performance The low irradiance of astronomical sources, combined with background limited performance of the detectors, mandated a reimaging configuration and the enclosure of the camera optics within the cold volume Correcting chromatic aberrations, and minimizing ghost images were additional challenges imposed by program requirements The key to achieving high performance was found to be the selection of lens materials The final F/35 optical design uses fifteen CaF2 elements and four Infrasil elements in an all-spherical configuration The design is diffraction limited over the full format in the Ks spectral band, and is nearly so in the J and H bands The tolerance environment is benign, making the design well suited for use in a cryogenic environment A single channel prototype has been built and extensively field tested at the 50-inch telescope at Kitt Peak National Observatory Each channel in the multi-spectral camera uses the same optical design successfully demonstrated in the prototype Currently, the first of two three-channel cameras is undergoing lab tests for image quality and channel registration© (1996) COPYRIGHT SPIE--The International Society for Optical Engineering Downloading of the abstract is permitted for personal use onlyread more
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Journal ArticleDOI
The Two Micron All Sky Survey (2MASS)
Michael F. Skrutskie,Michael F. Skrutskie,Roc M. Cutri,R. Stiening,Martin D. Weinberg,Stephen E. Schneider,John M. Carpenter,Chas Beichman,R. Capps,T. Chester,J. Elias,John P. Huchra,James Liebert,C. Lonsdale,David G. Monet,Stephan D. Price,Patrick Seitzer,Thomas H. Jarrett,J. D. Kirkpatrick,John E. Gizis,E. Howard,T. Evans,John W. Fowler,L. Fullmer,Robert L. Hurt,R. M. Light,E. L. Kopan,K. A. Marsh,H. McCallon,R. Tam,S. D. Van Dyk,S. Wheelock +31 more
TL;DR: The Two Micron All Sky Survey (2MASS) as mentioned in this paper collected 25.4 Tbytes of raw imaging data from two dedicated 1.3 m diameter telescopes located at Mount Hopkins, Arizona and CerroTololo, Chile.
Journal ArticleDOI
Further defining spectral type "y" and exploring the low-mass end of the field brown dwarf mass function
J. Davy Kirkpatrick,Christopher R. Gelino,Michael C. Cushing,Gregory N. Mace,Roger L. Griffith,Michael F. Skrutskie,Kenneth A. Marsh,Edward L. Wright,Peter R. Eisenhardt,Ian S. McLean,Amy Mainzer,Adam J. Burgasser,C. G. Tinney,Stephen G. Parker,Graeme Salter +14 more
TL;DR: In this article, Cushing et al. presented the discovery of another seven Y dwarfs from the Wide-Field Infrared Survey Explorer (WISE) and used these objects, as well as the first six WISE Y dwarf discoveries, to explore the transition between spectral types T and Y. They found that the T/Y boundary roughly coincides with the spot where the J-H colors of brown dwarfs turn back to the red.
Journal ArticleDOI
SPIRITS: Uncovering Unusual Infrared Transients with Spitzer
Mansi M. Kasliwal,Mansi M. Kasliwal,John Bally,Frank J. Masci,Ann Marie Cody,Howard E. Bond,Howard E. Bond,Jacob E. Jencson,Samaporn Tinyanont,Yi Cao,Carlos Contreras,D. Dykhoff,S. Amodeo,Lee Armus,Martha L. Boyer,Martha L. Boyer,Matteo Cantiello,R. Carlon,A. Cass,David O. Cook,D. Corgan,J. Faella,O. D. Fox,Wayne Green,Robert D. Gehrz,George Helou,Eric Hsiao,Joel Johansson,Rubab Khan,Ryan M. Lau,Norbert Langer,Emily M. Levesque,Peter Milne,Shazrene Mohamed,Nidia Morrell,Andy Monson,Anna M. Moore,Eran O. Ofek,D. Sullivan,Mudumba Parthasarathy,Andres Perez,Daniel A. Perley,Mark M. Phillips,Thomas A. Prince,Dinesh Shenoy,Nathan Smith,Jason Surace,Schuyler D. Van Dyk,Patricia A. Whitelock,Robert Williams +49 more
TL;DR: In this paper, the authors present an ongoing, five-year systematic search for extragalactic infrared transients, dubbed SPIRITS (SPitzer InfraRed Intensive Transient Survey), dubbed SPRITEs (eSPecially Red Intermediate-luminosity Transient Events).
Journal ArticleDOI
The Field Substellar Mass Function Based on the Full-sky 20 pc Census of 525 L, T, and Y Dwarfs
J. Davy Kirkpatrick,Christopher R. Gelino,Jacqueline K. Faherty,Aaron M. Meisner,Dan Caselden,Adam C. Schneider,Federico Marocco,Alfred J. Cayago,Richard L. Smart,Peter R. Eisenhardt,Marc J. Kuchner,Edward L. Wright,Michael C. Cushing,Katelyn N. Allers,Daniella C. Bardalez Gagliuffi,Adam J. Burgasser,Jonathan Gagné,Sarah E. Logsdon,Emily C. Martin,James G. Ingalls,Patrick J. Lowrance,Ellianna S. Abrahams,Christian Aganze,Roman Gerasimov,Eileen C. Gonzales,Chih-Chun Hsu,Nikita Kamraj,Rocio Kiman,Jon M. Rees,Christopher A. Theissen,Kareem Ammar,Nikolaj Stevnbak Andersen,Paul Beaulieu,Guillaume Colin,Charles A. Elachi,Samuel J. Goodman,Leopold Gramaize,Leslie K. Hamlet,Justin Hong,Alexander Jonkeren,Mohammed Khalil,David W. Martin,William Pendrill,Benjamin Pumphrey,Austin Rothermich,Arttu Sainio,Andres Stenner,Christopher Tanner,Melina Thévenot,Nikita V. Voloshin,Jim Walla,Zbigniew Wedracki +51 more
TL;DR: In this article, the authors presented the final Spitzer trigonometric parallaxes for 361 L, T, and Y dwarfs and provided polynomial fits to the bulk trends.
Journal ArticleDOI
A Systematic Study of Mid-Infrared Emission from Core-Collapse Supernovae with SPIRITS
Samaporn Tinyanont,Mansi M. Kasliwal,Ori D. Fox,Ryan Lau,Nathan Smith,Robert E. Williams,Jacob E. Jencson,Daniel A. Perley,D. Dykhoff,Robert D. Gehrz,Joel Johansson,Schuyler D. Van Dyk,Frank J. Masci,Ann Marie Cody,Thomas A. Prince +14 more
TL;DR: For example, NASA's Spitzer mission grants [10136, 11063] and the Royal Thai Scholarship (RTS) as mentioned in this paper [10] were used for the Thai Spitzer project.
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