Proceedings ArticleDOI
Performance evaluation, readout modes, and calibration techniques of HgCdTe Hawaii-2RG mosaic arrays
Gert Finger,Reinhold J. Dorn,Siegfried Eschbaumer,Donald N. B. Hall,Leander Mehrgan,Manfred Meyer,Joerg Stegmeier +6 more
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TLDR
In this paper, it was shown that the readout noise for most arrays is limited by the MBE grown by the HAWAII-2RG material and not by the multiplexer or the data acquisition chain.Abstract:
Recently ESO has commissioned the HAWK-I camera which is equipped with a 2×2 mosaic of λc~ 2.5 µm HAWAII-2RG arrays. The arrays have high quantum efficiency and achieve photon shot noise limited performance on the telescope. Using reference pixels it can be shown that the readout noise for most arrays is limited by the MBE grown
HgCdTe material and not by the multiplexer or the data acquisition chain. Results obtained with the guide window of the
HAWAII-2RG multiplexer will be presented. Inter-channel crosstalk and fringing in the detector substrate will be
discussed. The dynamic range of detectors can be expanded by applying threshold limited integration (TLI) to the
follow-up-the-ramp nondestructive sampling scheme. For substrate removed arrays a calibration technique based on the
X-ray emission of Fe55 will be discussed.read more
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Journal ArticleDOI
First light for GRAVITY: Phase referencing optical interferometry for the Very Large Telescope Interferometer
Roberto Abuter,Matteo Accardo,António Amorim,Narsireddy Anugu,G. Avila,N. Azouaoui,Myriam Benisty,Jean-Philippe Berger,Nicolas Blind,H. Bonnet,Pierre Bourget,Wolfgang Brandner,R. Brast,A. Buron,Leonard Burtscher,Frédéric Cassaing,F. Chapron,Elodie Choquet,Yann Clénet,C. Collin,V. Coudé du Foresto,W. J. de Wit,P. T. de Zeeuw,P. T. de Zeeuw,Casey Deen,F. Delplancke-Ströbele,R. Dembet,Frederic Derie,Jason Dexter,Gilles Duvert,M. Ebert,Andreas Eckart,Andreas Eckart,Frank Eisenhauer,Michael Esselborn,P. Fédou,Gert Finger,Paulo J. V. Garcia,C. E. Garcia Dabo,R. Garcia Lopez,Eric Gendron,R. Genzel,Stefan Gillessen,Frédéric Gonté,Paulo Gordo,M. Grould,Ulrich Grözinger,S. Guieu,S. Guieu,Pierre Haguenauer,O. Hans,Xavier Haubois,Marcus Haug,F. Haussmann,Th. Henning,Stefan Hippler,Matthew Horrobin,Armin Huber,Z. Hubert,Norbert Hubin,Christian A. Hummel,Gerd Jakob,A. Janssen,Lieselotte Jochum,Laurent Jocou,Andreas Kaufer,S. Kellner,Sarah Kendrew,Sarah Kendrew,L. Kern,Pierre Kervella,Pierre Kervella,Mario Kiekebusch,Ralf Klein,Yitping Kok,Johann Kolb,Martin Kulas,Sylvestre Lacour,V. Lapeyrère,Bernard Lazareff,J.-B. Le Bouquin,Pierre Léna,Rainer Lenzen,Samuel Lévêque,Magdalena Lippa,Yves Magnard,Leander Mehrgan,M. Mellein,Antoine Mérand,J. Moreno-Ventas,Thibaut Moulin,Ewald Müller,Ewald Müller,F. Müller,Udo Neumann,Sylvain Oberti,T. Ott,Laurent Pallanca,Johana Panduro,Luca Pasquini,Thibaut Paumard,Isabelle Percheron,Karine Perraut,Guy Perrin,A. Pflüger,Oliver Pfuhl,T. Phan Duc,P. M. Plewa,Dan Popovic,Sebastian Rabien,A. Ramirez,Joany Andreina Manjarres Ramos,C. Rau,M. Riquelme,R.-R. Rohloff,Gérard Rousset,J. Sanchez-Bermudez,Silvia Scheithauer,Markus Schöller,Nicolas Schuhler,Jason Spyromilio,Christian Straubmeier,Eckhard Sturm,Marcos Suarez,Konrad R. W. Tristram,N. Ventura,Frederic H. Vincent,Idel Waisberg,Imke Wank,J. Weber,Ekkehard Wieprecht,M. Wiest,Erich Wiezorrek,Markus Wittkowski,Julien Woillez,Burkhard Wolff,Senol Yazici,D. Ziegler,Gérard Zins +138 more
TL;DR: GRAVITY as discussed by the authors is a new instrument to coherently combine the light of the European Southern Observatory Very Large Telescope Interferometer to form a telescope with an equivalent 130 m diameter angular resolution and a collecting area of 200 m2.
Journal ArticleDOI
Characterization and on-sky demonstration of an integrated photonic spectrograph for astronomy
TL;DR: Results from the first on-sky demonstration of a prototype astronomical integrated photonic spectrograph (IPS) using the Anglo-Australian Telescope near-infrared imaging spectrometer (IRIS2) at Siding Spring Observatory to observe atmospheric molecular OH emission lines are presented.
Journal ArticleDOI
Galaxy protocluster candidates around z∼ 2.4 radio galaxies
Nina A. Hatch,Nina A. Hatch,C. De Breuck,Audrey Galametz,George K. Miley,Roderik Overzier,H. J. A. Röttgering,Michelle Doherty,Tadayuki Kodama,Jaron Kurk,Nick Seymour,Bram Venemans,Joel Vernet,Andrew Zirm +13 more
TL;DR: In this article, the authors studied the environments of six radio galaxies at 2.2 < z < 2.6 using wide-field near-infrared images and found that three of the radio galaxies are surrounded by significant surface overdensities of such galaxies.
Proceedings ArticleDOI
300 nights of science with IGRINS at McDonald Observatory
Gregory N. Mace,Hwihyun Kim,Daniel T. Jaffe,Chan Park,Jae-Joon Lee,Kyle F. Kaplan,Young Sam Yu,In-Soo Yuk,Moo-Young Chun,Soojong Pak,Kang-Min Kim,Jeong-Eun Lee,Christopher Sneden,Melike Afşar,Michael D. Pavel,Hanshin Lee,Heeyoung Oh,Ueejeong Jeong,Sunkyung Park,Benjamin Kidder,Hye-In Lee,Huynh Anh N. Le,Jacob N. McLane,Michael Gully-Santiago,Jae Sok Oh,Sungho Lee,Narae Hwang,Byeong-Gon Park +27 more
TL;DR: The Immersion Grating Infrared Spectrometer (IGRINS) as discussed by the authors employs a silicon immersion grating as the primary disperser, and volume-phase holographic gratings cross-disperse the H and K bands onto Teledyne Hawaii-2RG arrays.
Journal ArticleDOI
Data reduction pipeline for the CHARIS integral-field spectrograph I: detector readout calibration and data cube extraction
Timothy D. Brandt,Maxime Rizzo,Tyler D. Groff,Jeffrey Chilcote,Johnny P. Greco,N. Jeremy Kasdin,Mary Anne Limbach,Michael Galvin,Craig Loomis,Gillian R. Knapp,Michael W. McElwain,Nemanja Jovanovic,Thayne Currie,Kyle Mede,Motohide Tamura,Motohide Tamura,Naruhisa Takato,Masahiko Hayashi +17 more
TL;DR: The data reduction pipeline for CHARIS as discussed by the authors constructs a ramp from the raw reads using the measured nonlinear pixel response and reconstructs the data cube using one of three extraction algorithms: aperture photometry, optimal extraction, or χ^2 fitting.
References
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Book
Scientific Charge-Coupled Devices
TL;DR: In this article, the spectral response, charge collection, charge transfer, and readout noise properties of charge-coupled devices have been investigated, and their potential for future improvement is discussed.
Journal ArticleDOI
Electron-Hole-Pair Creation Energies in Semiconductors
R. C. Alig,S. Bloom +1 more
TL;DR: In this paper, the electron-hole-pair creation energy is 3 times the semiconductor band gap and the free-particle approximation is used to describe cathodoluminescent phosphor efficiencies and the escape probabilities of secondary electrons.
Journal ArticleDOI
HAWK-I: the high-acuity wide-field K-band imager for the ESO Very Large Telescope
Markus Kissler-Patig,Jeff Pirard,Mark Casali,A. F. M. Moorwood,Nancy Ageorges,C. Alves de Oliveira,P. Baksai,Luigi R. Bedin,Eduardo Bendek,Peter Biereichel,B. Delabre,Reinhold J. Dorn,R. Esteves,G. Finger,D. Gojak,Gotthard Huster,Yves Jung,M. Kiekebush,Barbara Klein,Franz Koch,J. L. Lizon,Leander Mehrgan,Monika G. Petr-Gotzens,J. Pritchard,Fernando Selman,J. Stegmeier +25 more
TL;DR: The High-Acuity Wide-field K-band Imager for ESO's Very Large Telescope (AWK-I) as mentioned in this paper was designed, developed, and performed for the ESO VLSTM.
Proceedings ArticleDOI
Interpixel capacitance in large format CMOS hybrid arrays
TL;DR: In this paper, the effect of the coupling capacitance between neighboring pixels on the conversion gain of large format arrays has been analyzed and compared quantitatively, and it has been shown that the noise squared versus signal (NoSV) method can only be applied for negligible interpixel capacitance.
Journal ArticleDOI
Conversion Gain and Interpixel Capacitance of Cmos Hybrid Focal Plane Arrays
Gert Finger,James W. Beletic,Reinhold J. Dorn,Manfred Meyer,Leander Mehrgan,Alan Moorwood,Joerg Stegmeier +6 more
TL;DR: In this paper, a simple technique has been developed to measure the nodal capacitance directly by comparing the voltage change of an external calibrated capacitor with the voltage changes on a nodal capacitor of the detector pixel.