Dr. Klaus W. Hodapp Profile

Dr. Klaus W. Hodapp

Director UKIRT Observatory at Institute for Astronomy

SPIE Involvement:

Author

Publications (59)

Proceedings Article | 29 August 2022 Presentation + Paper

First tests of a 1 megapixel near-infrared avalanche photodiode array for ultra-low background space astronomy

Charles-Antoine Claveau, Michael Bottom, Shane Jacobson, Klaus Hodapp, Aidan Walk, Markus Loose, Ian Baker, Egle Zemaityte, Matthew Hicks, Keith Barnes, Richard Powell, Ryan Bradley, Eric Moore

Proceedings Volume 12191, 121910Z (2022) https://doi.org/10.1117/12.2627285

KEYWORDS: Sensors, Astronomy, Mercury cadmium telluride, Avalanche photodiodes

Read Abstract +

Proceedings Article | 29 August 2022 Presentation + Paper

Testing of the HAWAII-4RG-15 prototype detector arrays

Klaus Hodapp, Donald N. Hall, Shane Jacobson

Proceedings Volume 12191, 121910S (2022) https://doi.org/10.1117/12.2628831

KEYWORDS: Sensors, Detector arrays, Signal detection, Cadmium sulfide, Optical amplifiers, Amplifiers, Telescopes, Prototyping, Detector development, Temperature metrology

Read Abstract +

Proceedings Article | 13 July 2018 Paper

The infrared Doppler (IRD) instrument for the Subaru telescope: instrument description and commissioning results

Takayuki Kotani, Motohide Tamura, Jun Nishikawa, Akitoshi Ueda, Masayuki Kuzuhara, Masashi Omiya, Jun Hashimoto, Masato Ishizuka, Teruyuki Hirano, Hiroshi Suto, Takashi Kurokawa, Tsukasa Kokubo, Takahiro Mori, Yosuke Tanaka, Ken Kashiwagi, Mihoko Konishi, Tomoyuki Kudo, Bun'ei Sato, Shane Jacobson, Klaus Hodapp, Donald Hall, Wako Aoki, Tomonori Usuda, Shogo Nishiyama, Tadashi Nakajima, Yuji Ikeda, Tomoyasu Yamamuro, Jun-Ichi Morino, Haruka Baba, Ko Hosokawa, Hiroyuki Ishikawa, Norio Narita, Eiichiro Kokubo, Yutaka Hayano, Hideyuki Izumiura, Eiji Kambe, Nobuhiko Kusakabe, Jungmi Kwon, Masahiro Ikoma, Yasunori Hori, Hidenori Genda, Akihiko Fukui, Yuka Fujii, Hajime Kawahara, Guyon Olivier, Nemanja Jovanovic, Hiroki Harakawa, Masahiko Hayashi, Masahide Hidai, Masahiro Machida, Taro Matsuo, Tetsuya Nagata, Masahiro Ogihara, Hideki Takami, Naruhisa Takato, Hiroshi Terada, Daehyeon Oh

Proceedings Volume 10702, 1070211 (2018) https://doi.org/10.1117/12.2311836

KEYWORDS: Stars, Spectroscopy, Telescopes, Sensors, Cameras, Error analysis, Mirrors, Infrared telescopes, Frequency combs, Adaptive optics

Read Abstract +

Proceedings Article | 12 July 2018 Paper

Performance tests of Subaru/IRD for very precise and stable infrared radial velocity observations

Masayuki Kuzuhara, Teruyuki Hirano, Takayuki Kotani, Masato Ishizuka, Masashi Omiya, Mihoko Konishi, Tomoyuki Kudo, Jun Nishikawa, Akitoshi Ueda, Ko Hosokawa, Nobuhiko Kusakabe, Takashi Kurokawa, Tsukasa Kokubo, Takahiro Mori, Yosuke Tanaka, Shane Jacobson, Klaus Hodapp, Motohide Tamura

Proceedings Volume 10702, 1070260 (2018) https://doi.org/10.1117/12.2311832

KEYWORDS: Stars, Single mode fibers, Velocity measurements, Calibration, Polarization, Spectroscopy, Lamps, Planets

Read Abstract +

Proceedings Article | 10 July 2018 Presentation + Paper

The Robo-AO-2 facility for rapid visible/near-infrared AO imaging and the demonstration of hybrid techniques

Christoph Baranec, Mark Chun, Donald Hall, Michael Connelley, Klaus Hodapp, Daniel Huber, Michael Liu, Eugene Magnier, Karen Meech, Marianne Takamiya, Richard Griffiths, Reed Riddle, Richard Dekany, Mansi Kasliwal, Ryan Lau, Nicholas Law, Olivier Guyon, Imke de Pater, Mike Wong, Eran Ofek, Heidi Hammel, Marc Kuchner, Amy Simon, Anna Moore, Markus Kissler-Patig, Marcos van Dam

Proceedings Volume 10703, 1070327 (2018) https://doi.org/10.1117/12.2312835

KEYWORDS: Adaptive optics, Stars, Telescopes, Wavefront sensors, Planets, Imaging systems, Prototyping, Exoplanets, Sensors, Cameras

Read Abstract +

Proceedings Article | 6 July 2018 Paper

UKIRT under new management: status and plans

K. Hodapp, T. Kerr, W. Varricatt, R. McLaren, D. Lonborg, D. H. Hall, S. Jacobson, J. Bruursema, S. Dahm, B. Dorland, J. Munn, F. Vrba, J. Dempsey, Y. Shvartzvald, G. Bryden, B. S. Gaudi, C. Beichman, S. Calchi Novati, C. Henderson, S. Jacklin, K. Stassun, M. Penny, Mike Irwin, Andy Lawrence

Proceedings Volume 10700, 107002Z (2018) https://doi.org/10.1117/12.2311923

KEYWORDS: Telescopes, Astronomy, Observatories, Imaging spectroscopy, Infrared telescopes, Near infrared, Cameras, Sensors, Planets, Detector arrays

Read Abstract +

SPIE Journal Paper | 17 July 2017 Open Access

λ = 2.4 to 5 μm spectroscopy with the James Webb Space Telescope NIRCam instrument

Thomas Greene, Douglas Kelly, John Stansberry, Jarron Leisenring, Everett Schlawin, Laurie Chu, Klaus Hodapp, Marcia Rieke, Eiichi Egami

JATIS, Vol. 3, Issue 03, 035001, (July 2017) https://doi.org/10.1117/12.10.1117/1.JATIS.3.3.035001

KEYWORDS: James Webb Space Telescope, Spectroscopy, Spectroscopes, Imaging spectroscopy, Cameras, Spectral resolution, Field spectroscopy, Optical filters, Image filtering, Lenses

Read Abstract +

DOWNLOAD PAPER

Proceedings Article | 29 August 2016 Paper

A green observatory in the Chilean Atacama desert

Michael Ramolla, Christian Westhues, Moritz Hackstein, Martin Haas, Klaus Hodapp, Roland Lemke, Angie Barr Domínguez, Rolf Chini, Miguel Murphy

Proceedings Volume 9911, 99112M (2016) https://doi.org/10.1117/12.2234018

KEYWORDS: Observatories, Telescopes, Astronomy, IRIS Consortium, Optical filters, Robotics, Wind turbine technology, Robotics, Stars, Wind energy, Information operations

Read Abstract +

Proceedings Article | 9 August 2016 Paper

The Wendelstein three channel imager (3KK): alignment, commissioning, and first results

F. Lang-Bardl, R. Bender, C. Goessl, F. Grupp, H.-J. Hess, J. Kaminski, K. Hodapp, U. Hopp, S. Jacobson, H. Kravcar, A. Monna, W. Mitsch, J. Schlichter, M. Wegner

Proceedings Volume 9908, 990844 (2016) https://doi.org/10.1117/12.2232039

KEYWORDS: Imaging systems, Cameras, Optical filters, Near infrared, Observatories, Beam splitters, Telescopes, Channel projecting optics, Sensors, Image quality

Read Abstract +

Proceedings Article | 1 August 2016 Paper

Performance of the first science grade λc=2.5µm HAWAII 4RG-15 array in the laboratory and at the telescope

Donald N. Hall, Dani Atkinson, Richard Blank, Mark Farris, Sean Goebel, Klaus Hodapp, Shane Jacobson, Markus Loose, Majid Zandian

Proceedings Volume 9915, 99150W (2016) https://doi.org/10.1117/12.2234369

KEYWORDS: Telescopes, Mercury cadmium telluride, Readout integrated circuits, Optical sensors, Cadmium sulfide, Interference (communication), Space telescopes, Astronomy, Prototyping, Astronomical telescopes

Read Abstract +

Proceedings Article | 29 July 2016 Paper

Slitless spectroscopy with the James Webb Space Telescope Near-Infrared Camera (JWST NIRCam)

Thomas Greene, Laurie Chu, Eiichi Egami, Klaus Hodapp, Douglas Kelly, Jarron Leisenring, Marcia Rieke, Massimo Robberto, Everett Schlawin, John Stansberry

Proceedings Volume 9904, 99040E (2016) https://doi.org/10.1117/12.2231347

KEYWORDS: James Webb Space Telescope, Spectroscopy, Near infrared spectroscopy, Imaging spectroscopy, Spectroscopes, James Webb Space Telescope, Spectroscopes, Imaging spectroscopy, Near infrared spectroscopy, Sensors, Optical filters, Stars, Image filtering, Spectral resolution

Read Abstract +

Proceedings Article | 27 July 2016 Paper

Performance of science grade HgCdTe H4RG-15 image sensors

Majid Zandian, Mark Farris, William McLevige, Dennis Edwall, Erdem Arkun, Eric Holland, James Gunn, Stephen Smee, Donald N. B. Hall, Klaus Hodapp, Atsushi Shimono, Naoyuki Tamura, Micheal Carmody, John Auyeung, James Beletic

Proceedings Volume 9915, 99150F (2016) https://doi.org/10.1117/12.2233664

KEYWORDS: Readout integrated circuits, Mercury cadmium telluride, Quantum efficiency, Infrared radiation, Sensors, Short wave infrared radiation, Near infrared, Cadmium sulfide, Staring arrays, Silicon carbide

Read Abstract +

Proceedings Article | 14 July 2014 Paper

Infrared Doppler instrument (IRD) for the Subaru telescope to search for Earth-like planets around nearby M-dwarfs

Takayuki Kotani, Motohide Tamura, Hiroshi Suto, Jun Nishikawa, Bun'ei Sato, Wako Aoki, Tomonori Usuda, Takashi Kurokawa, Ken Kashiwagi, Shogo Nishiyama, Yuji Ikeda, Donald Hall, Klaus Hodapp, Jun Hashimoto, Jun-Ichi Morino, Yasushi Okuyama, Yosuke Tanaka, Shota Suzuki, Sadahiro Inoue, Jungmi Kwon, Takuya Suenaga, Dehyun Oh, Haruka Baba, Norio Narita, Eiichiro Kokubo, Yutaka Hayano, Hideyuki Izumiura, Eiji Kambe, Tomoyuki Kudo, Nobuhiko Kusakabe, Masahiro Ikoma, Yasunori Hori, Masashi Omiya, Hidenori Genda, Akihiko Fukui, Yuka Fujii, Olivier Guyon, Hiroki Harakawa, Masahiko Hayashi, Masahide Hidai, Teruyuki Hirano, Masayuki Kuzuhara, Masahiro Machida, Taro Matsuo, Tetsuya Nagata, Hirohi Onuki, Masahiro Ogihara, Hideki Takami, Naruhisa Takato, Yasuhiro Takahashi, Chihiro Tachinami, Hiroshi Terada, Hajime Kawahara, Tomoyasu Yamamuro

Proceedings Volume 9147, 914714 (2014) https://doi.org/10.1117/12.2055075

KEYWORDS: Stars, Optical fibers, Planets, Spectroscopy, Adaptive optics, Optical benches, Frequency combs, Sensors, Infrared telescopes, Ceramics

Read Abstract +

Proceedings Article | 25 September 2012 Paper

Development and production of the H4RG-15 focal plane array

Richard Blank, James Beletic, Donald Cooper, Mark Farris, Donald Hall, Klaus Hodapp, Gerard Luppino, Eric Piquette, Min Xu

Proceedings Volume 8453, 84530V (2012) https://doi.org/10.1117/12.926750

KEYWORDS: Readout integrated circuits, Staring arrays, Prototyping, Sensors, Silicon carbide, Quantum efficiency, Infrared telescopes, Infrared radiation, Mercury cadmium telluride, Semiconducting wafers

Read Abstract +

Proceedings Article | 25 September 2012 Paper

Performance of the first HAWAII 4RG-15 arrays in the laboratory and at the telescope

Donald Hall, Dani Atkinson, James Beletic, Richard Blank, Mark Farris, Klaus Hodapp, Shane Jacobson, Markus Loose, Gerard Luppino

Proceedings Volume 8453, 84530W (2012) https://doi.org/10.1117/12.927226

KEYWORDS: Telescopes, Cadmium sulfide, Astronomy, Interference (communication), Readout integrated circuits, Astronomical telescopes, Space telescopes, James Webb Space Telescope, Infrared telescopes, Prototyping

Read Abstract +

Proceedings Article | 24 September 2012 Paper

Infrared Doppler instrument for the Subaru Telescope (IRD)

M. Tamura, H. Suto, J. Nishikawa, T. Kotani, B. Sato, W. Aoki, T. Usuda, T. Kurokawa, K. Kashiwagi, S. Nishiyama, Y. Ikeda, D. Hall, K. Hodapp, J. Hashimoto, J. Morino, S. Inoue, Y. Mizuno, Y. Washizaki, Y. Tanaka, S. Suzuki, J. Kwon, T. Suenaga, D. Oh, N. Narita, E. Kokubo, Y. Hayano, H. Izumiura, E. Kambe, T. Kudo, N. Kusakabe, M. Ikoma, Ya. Hori, M. Omiya, H. Genda, A. Fukui, Y. Fujii, O. Guyon, H. Harakawa, M. Hayashi, M. Hidai, T. Hirano, M. Kuzuhara, M. Machida, T. Matsuo, T. Nagata, H. Ohnuki, M. Ogihara, S. Oshino, R. Suzuki, H. Takami, N. Takato, Y. Takahashi, C. Tachinami, H. Terada

Proceedings Volume 8446, 84461T (2012) https://doi.org/10.1117/12.925885

KEYWORDS: Stars, Planets, Telescopes, Spectroscopy, Exoplanets, Adaptive optics, Space telescopes, Infrared telescopes, Near field optics, Doppler effect

Read Abstract +

Proceedings Article | 20 July 2010 Paper

3kk: the Optical-NIR Multi-Channel Nasmyth Imager for the Wendelstein Fraunhofer Telescope

Florian Lang-Bardl, Klaus Hodapp, Shane Jacobson, Ralf Bender, Claus Gössl, Maximilian Fabricius, Frank Grupp, Ulrich Hopp, Wolfgang Mitsch

Proceedings Volume 7735, 77353Q (2010) https://doi.org/10.1117/12.856444

KEYWORDS: Cameras, Telescopes, Near infrared, Optical filters, Sensors, Channel projecting optics, Imaging systems, Beam splitters, Distortion, Astronomy

Read Abstract +

Proceedings Article | 16 July 2010 Paper

Performance characterization of the HiCIAO instrument for the Subaru Telescope

Ryuji Suzuki, Tomoyuki Kudo, Jun Hashimoto, Joseph Carson, Sebastian Egner, Miwa Goto, Masayuki Hattori, Yutaka Hayano, Klaus Hodapp, Meguro Ito, Masanori Iye, Shane Jacobson, Ryo Kandori, Nobuhiko Kusakabe, Masayuki Kuzuhara, Taro Matsuo, Michael Mcelwain, Jun-Ichi Morino, Shin Oya, Yoshihiko Saito, Richard Shelton, Vern Stahlberger, Hiroshi Suto, Hideki Takami, Christian Thalmann, Makoto Watanabe, Hubert Yamada, Motohide Tamura

Proceedings Volume 7735, 773530 (2010) https://doi.org/10.1117/12.857361

KEYWORDS: K band, Stars, Sensors, Distortion, Telescopes, Planets, Coronagraphy, Speckle pattern, Point spread functions, Adaptive optics

Read Abstract +

Proceedings Article | 15 July 2010 Paper

Commissioning of the infrared imaging survey (IRIS) system

Klaus Hodapp, Rolf Chini, Bo Reipurth, Miguel Murphy, Roland Lemke, Ramon Watermann, Shane Jacobson, Karsten Bischoff, Taylor Chonis, Denny Dement, Ryan Terrien, Kimberley Bott, Sydney Provence

Proceedings Volume 7735, 77351A (2010) https://doi.org/10.1117/12.856288

KEYWORDS: Telescopes, IRIS Consortium, Infrared cameras, Cameras, Observatories, Imaging systems, Mirrors, Infrared imaging, Astronomy, Stars

Read Abstract +

Proceedings Article | 25 July 2008 Paper

HiCIAO: the Subaru Telescope's new high-contrast coronographic imager for adaptive optics

Klaus Hodapp, Ryuji Suzuki, Motohide Tamura, Lyu Abe, Hiroshi Suto, Ryo Kandori, Junichi Morino, Tetsuo Nishimura, Hideki Takami, Olivier Guyon, Shane Jacobson, Vern Stahlberger, Hubert Yamada, Richard Shelton, Jun Hashimoto, Alexander Tavrov, Jun Nishikawa, Nobuharu Ukita, Hideyuki Izumiura, Masahiko Hayashi, Tadashi Nakajima, Toru Yamada, Tomonori Usuda

Proceedings Volume 7014, 701419 (2008) https://doi.org/10.1117/12.788088

KEYWORDS: Adaptive optics, Telescopes, Imaging systems, Optical filters, Infrared cameras, Methane, Absorption, Sensors, Prisms, Image filtering

Read Abstract +

Proceedings Article | 14 July 2008 Paper

IMAKA: imaging from Mauna KeA with an atmosphere corrected 1 square degree optical imager

Olivier Lai, Mark Chun, Jean Charles Cuillandre, Ray Carlberg, Harvey Richer, David Andersen, John Pazder, John Tonry, René Doyon, Simon Thibault, Jim Dunlop, Chris Pritchet, Jean Pierre Véran, Christ Ftaclas, Peter Onaka, Klaus Hodapp, Robert McLaren, Emmanuel Bertin, Yannick Mellier, Pierre Astier, Reynald Pain

Proceedings Volume 7015, 70154H (2008) https://doi.org/10.1117/12.790114

KEYWORDS: Stars, Turbulence, Adaptive optics, Mirrors, Image quality, Wavefront sensors, Monte Carlo methods, Telescopes, Deformable mirrors, Point spread functions

Read Abstract +

Proceedings Article | 10 July 2008 Paper

The Infra-Red Imaging Survey (IRIS) system

Klaus Hodapp, Rolf Chini, Bo Reipurth, Roland Lemke, Shane Jacobson, Taylor Chonis, Kaniela Dement, Karsten Bischoff

Proceedings Volume 7012, 70120G (2008) https://doi.org/10.1117/12.788071

KEYWORDS: Telescopes, IRIS Consortium, Stars, Cameras, Infrared cameras, Imaging systems, Observatories, Mirrors, Astronomy, Optical instrument design

Read Abstract +

Proceedings Article | 29 June 2006 Paper

Design of the HiCIAO instrument for the Subaru Telescope

Klaus Hodapp, Motohide Tamura, Ryuji Suzuki, Shane Jacobson, Vern Stahlberger, Hubert Yamada, Hideki Takami, Olivier Guyon, Lyu Abe

Proceedings Volume 6269, 62693V (2006) https://doi.org/10.1117/12.670090

KEYWORDS: Telescopes, Adaptive optics, Cameras, Prisms, Sensors, Infrared cameras, Optical filters, Optical instrument design, Imaging systems, Detector arrays

Read Abstract +

Proceedings Article | 28 June 2006 Paper

Concept and science of HiCIAO: high contrast instrument for the Subaru next generation adaptive optics

Motohide Tamura, Klaus Hodapp, Hideki Takami, Lyu Abe, Hiroshi Suto, Olivier Guyon, Shane Jacobson, Ryo Kandori, Jun-Ichi Morino, Naoshi Murakami, Vern Stahlberger, Ryuji Suzuki, Alexander Tavrov, Hubert Yamada, Jun Nishikawa, Nobuharu Ukita, Jun Hashimoto, Hideyuki Izumiura, Masahiko Hayashi, Tadashi Nakajima, Tetsuo Nishimura

Proceedings Volume 6269, 62690V (2006) https://doi.org/10.1117/12.670742

KEYWORDS: Coronagraphy, Adaptive optics, Stars, Telescopes, Exoplanets, Polarization, Astronomy, Optical filters, Space telescopes, Actuators

Read Abstract +

Proceedings Article | 30 September 2004 Paper

WIRCam: the infrared wide-field camera for the Canada-France-Hawaii Telescope

Pascal Puget, Eric Stadler, Rene Doyon, Pierre Gigan, Simon Thibault, Gerard Luppino, Gregory Barrick, Tom Benedict, Thierry Forveille, William Rambold, James Thomas, Tom Vermeulen, Jeff Ward, Jean-Luc Beuzit, Philippe Feautrier, Yves Magnard, Guillaume Mella, Olivier Preis, Philippe Vallee, Shiang-yu Wang, Chueh-Jen Lin, Donald Hall, Klaus Hodapp

Proceedings Volume 5492, (2004) https://doi.org/10.1117/12.551097

KEYWORDS: Cameras, Telescopes, Sensors, Optical filters, Infrared cameras, Infrared telescopes, Astronomy, Infrared radiation, Cryogenics, Thermography

Read Abstract +

Proceedings Article | 30 September 2004 Paper

Development of the Wide Field Grism Spectrograph 2

Mariko Uehara, Chie Nagashima, Koji Sugitani, Makoto Watanabe, Shuji Sato, Tetsuya Nagata, Motohide Tamura, Noboru Ebizuka, Andrew Pickles, Klaus Hodapp, Yoichi Itoh, Makoto Nakano, Katsuo Ogura

Proceedings Volume 5492, (2004) https://doi.org/10.1117/12.551055

KEYWORDS: Imaging spectroscopy, Spectroscopy, Telescopes, Spectrographs, Spectroscopes, CCD cameras, Charge-coupled devices, Astronomy, Sensors, Collimators

Read Abstract +

Proceedings Article | 29 September 2004 Paper

A 4K x 4K HgCdTe astronomical camera enabled by the JWST NIR detector development program

Donald Hall, Gerard Luppino, Klaus Hodapp, James Garnett, Markus Loose, Majid Zandian

Proceedings Volume 5499, (2004) https://doi.org/10.1117/12.554733

KEYWORDS: James Webb Space Telescope, Sensors, Staring arrays, Near infrared, Astronomy, Telescopes, Mercury cadmium telluride, Multiplexers, Detector development, Molybdenum

Read Abstract +

The ambitious science goals of the James Webb Space Telescope (JWST) have driven spectacular advances in λco ~ 5um detector technology over the past five years. This paper reviews both the UH/RSC team’s Phase A development and evaluation of 2Kx2K arrays exceeding the detector requirements for JWST’s near infrared instruments and also the hardware integration of these into a 4Kx4K (16Mpxl) close packed mosaic focal plane array housed in an Ultra Low Background test facility. Both individual first generation 2Kx2K SCA’s and 4Kx4K mosaic focal planes have been extensively characterized in the laboratory and, since September 2003, a NIR camera utilizing the 4Kx4K mosaic focal plane has been in use for nearly 100 nights at the UH 2.2 m telescope on Mauna Kea. Typical test results for the first generation 2Kx2K arrays and their integration into 4Kx4K mosaic focal planes are reported. Demonstration of the design concepts and both array and mosaic focal plane performance in actual hardware, as described here, has provided the foundation for design iterations leading to later generations of 2Kx2K arrays and 4Kx4K mosaic focal planes. Four major technology developments leading to first generation hardware demonstrations of both 2Kx2K SCA’s and a 4Kx4K mosaic FPA are reviewed. These are: 1) improvement in test equipment and procedures to characterize the detectors against JWST requirements and goals, primarily at 37K but with the capability to test from 30K to 100K; 2) optimization of λc ~ 5 um MBE HgCdTe material on a CZT substrate for low dark current (goal of 0.003 e-/sec at 37K) with high quantum efficiency, low cross-talk and greatly reduced image persistence; 3) development of the 2Kx2K HAWAII-2RG multiplexer designed specifically to take full advantage of these detector characteristics for a wide range of astronomical applications (and fully compatible with an ASIC controller developed under the JWST Instrument Technology Development initiative) and 4) development of molybdenum SCA carriers allowing modules to be close-butted on three sides and easily installed onto a molybdenum plate to form a 4Kx4K mosaic focal plane. We describe both the improvements in the KSPEC test facility and in test procedures for individual 2Kx2K arrays and the Ultra Low Background (ULB) test facility developed specifically to evaluate 4Kx4K mosaic focal plane assemblies required for the NIRCam instrument. The laboratory test configuration of the ULB facility utilizes multiple shields and internal light sources to achieve background fluxes <1 photon/hour per pixel for λc ~ 5um while providing temperature stability <1mK over periods of weeks. An alternate configuration utilizes fore optics to allow the mosaic FPA module of the ULB facility to be mounted at the Cassegrain focus of the UH 2.2 meter telescope, providing an image scale of 0.25”/pixel over a 17’x17’ field. A cold PK 50 lens cuts off around 1.7 um, limiting the background at wavelengths below 1.65 um (where the array can be used with normal filters and where narrow band filters reduce the background to levels comparable to NIRCam on JWST). Observations at the telescope, which provide the best way of verifying certain JWST requirements and allow direct astronomical characterization of the detectors, are reported.

Proceedings Article | 28 September 2004 Paper

Optical design of the Pan-STARRS telescopes

Klaus Hodapp, Walter Siegmund, Nicholas Kaiser, Kenneth Chambers, Uwe Laux, Jeff Morgan, Ed Mannery

Proceedings Volume 5489, (2004) https://doi.org/10.1117/12.550179

KEYWORDS: Telescopes, Space telescopes, Optical filters, Optical design, Bandpass filters, Asteroids, Atmospheric optics, Optical instrument design, Image quality, Diffraction

Read Abstract +

Proceedings Article | 18 February 2004 Paper

Optical design of the Pan-STARRS telescopes

Klaus Hodapp, Uwe Laux, Walter Siegmund, Nickolas Kaiser

Proceedings Volume 5249, (2004) https://doi.org/10.1117/12.513163

KEYWORDS: Telescopes, Space telescopes, Optical design, Optical filters, Distortion, Bandpass filters, Asteroids, Charge-coupled devices, Sensors, Optical instrument design

Read Abstract +

Proceedings Article | 7 March 2003 Paper

Design and commissioning of a dual visible/near-IR echelle spectrograph for the AEOS telescope

Robert Thornton, Jeff Kuhn, Klaus-Werner Hodapp, Alan Stockton, Gerard Luppino, Mark Waterson, Michael Maberry, Hubert Yamada, Everett Irwin, Kent Fletcher

Proceedings Volume 4841, (2003) https://doi.org/10.1117/12.462598

KEYWORDS: Spectrographs, Mirrors, Sensors, Visible radiation, Infrared radiation, Collimators, Cameras, Telescopes, Infrared spectroscopy, Spectral resolution

Read Abstract +

Proceedings Article | 7 March 2003 Paper

The University of Hawaii Wide-Field Imager

Klaus-Werner Hodapp, Andrew Pickles, Gerard Luppino, Andreas Seifahrt, Richard Wainscoat

Proceedings Volume 4841, (2003) https://doi.org/10.1117/12.458044

KEYWORDS: Telescopes, Optical filters, Imaging systems, Camera shutters, Cameras, CCD cameras, Glasses, Optical instrument design, Optical design, Optics manufacturing

Read Abstract +

Proceedings Article | 7 March 2003 Paper

The Gemini Near-Infrared Imager (NIRI): a discussion of its design features and performance

Klaus-Werner Hodapp, Everett Irwin, Hubert Yamada, Randall Chung, Kent Fletcher, Joe Jensen, Wendy Mays, Robert Nolan, Douglas Simons, Colin Aspin

Proceedings Volume 4841, (2003) https://doi.org/10.1117/12.458026

KEYWORDS: Gemini Observatory, Telescopes, Cameras, Mirrors, Infrared radiation, Aluminum, Tolerancing, Wavefront sensors, Sensors, Imaging systems

Read Abstract +

Proceedings Article | 5 March 2003 Paper

NGST NIRCam scientific program and design concept

Marcia Rieke, Stefi Baum, Charles Beichman, David Crampton, Rene Doyon, Daniel Eisenstein, Thomas Greene, Klaus-Werner Hodapp, Scott Horner, Doug Johnstone, Lawrence Lesyna, Simon Lilly, Michael Meyer, Peter Martin, Donald McCarthy, George Rieke, Thomas Roellig, John Stauffer, John Trauger, Erick Young

Proceedings Volume 4850, (2003) https://doi.org/10.1117/12.489103

KEYWORDS: Tunable filters, Stars, Optical filters, Coronagraphy, Galactic astronomy, Planets, Calibration, Space telescopes, Cameras, Sensors

Read Abstract +

Proceedings Article | 24 December 2002 Paper

Pan-STARRS: a large synoptic survey telescope array

Nicholas Kaiser, Herve Aussel, Barry Burke, Hans Boesgaard, Ken Chambers, Mark Chun, James Heasley, Klaus-Werner Hodapp, Bobby Hunt, Robert Jedicke, D. Jewitt, Rolf Kudritzki, Gerard Luppino, Michael Maberry, Eugene Magnier, David Monet, Peter Onaka, Andrew Pickles, Pui Hin Rhoads, Theodore Simon, Alexander Szalay, Istvan Szapudi, David Tholen, John Tonry, Mark Waterson, John Wick

Proceedings Volume 4836, (2002) https://doi.org/10.1117/12.457365

KEYWORDS: Telescopes, Large Synoptic Survey Telescope, Sensors, Optical instrument design, Point spread functions, Asteroids, Electronics, Stars, Adaptive optics, Charge-coupled devices

Read Abstract +

Proceedings Article | 16 August 2000 Paper

Visible and infrared detectors at Rockwell Science Center

Lester Kozlowski, John Montroy, Craig Cabelli, Donald Cooper, Annie Chen, Gary Bostrup, Yibin Bai, Kadri Vural, Klaus-Werner Hodapp, Donald Hall

Proceedings Volume 4008, (2000) https://doi.org/10.1117/12.395443

KEYWORDS: Sensors, Staring arrays, Quantum efficiency, Silicon, Visible radiation, Imaging systems, Astronomy, Capacitance, Charge-coupled devices, Video

Read Abstract +

Proceedings Article | 16 August 2000 Paper

AEOS spectrograph

Klaus-Werner Hodapp, Donald Mickey, Alan Stockton, Gerard Luppino, Robert Thornton, Mark Waterson, Michael Maberry, Everett Irwin, Tony Young, Hubert Yamada

Proceedings Volume 4008, (2000) https://doi.org/10.1117/12.395536

KEYWORDS: Spectrographs, Mirrors, Sensors, Collimators, Cameras, Electronics, Infrared radiation, Charge-coupled devices, Infrared imaging, Infrared detectors

Read Abstract +

Proceedings Article | 16 August 2000 Paper

Gemini near-infrared imager (NIRI)

Klaus-Werner Hodapp, J. Hora, E. Graves, Everett Irwin, Hubert Yamada, Jeffrey Douglass, Tony Young, Louis Robertson

Proceedings Volume 4008, (2000) https://doi.org/10.1117/12.395450

KEYWORDS: Telescopes, Gemini Observatory, Sensors, Cameras, Wavefront sensors, Imaging systems, Mirrors, Optical filters, Beam splitters, Image quality

Read Abstract +

Proceedings Article | 16 August 2000 Paper

Characterization of lambdac=5 um Hg:Cd:Te arrays for low-background astronomy

Donald Hall, Klaus-Werner Hodapp, David Goldsmith, Craig Cabelli, Allan Haas, Lester Kozlowski, Kadri Vural

Proceedings Volume 4008, (2000) https://doi.org/10.1117/12.395444

KEYWORDS: Staring arrays, Temperature metrology, Multiplexers, Astronomy, Quantum efficiency, Spectroscopy, Interference (communication), Signal to noise ratio, Data modeling, Sensors

Read Abstract +

Proceedings Article | 16 August 2000 Paper

Near-infrared detector arrays: current state of the art

Klaus-Werner Hodapp

Proceedings Volume 4008, (2000) https://doi.org/10.1117/12.395442

KEYWORDS: Multiplexers, Sensors, Detector arrays, Infrared radiation, Astronomy, Mercury cadmium telluride, Infrared detectors, Signal detection, Infrared sensors, Detector development

Read Abstract +

Proceedings Article | 16 August 2000 Paper

Cryostat mechanism design and fabrication

Tony Young, Jeffrey Douglass, Klaus-Werner Hodapp, Hubert Yamada, Ev Irvin, Louis Robertson

Proceedings Volume 4008, (2000) https://doi.org/10.1117/12.395459

KEYWORDS: Metals, Cryogenics, Titanium, Sensors, Mirrors, Telescopes, Infrared radiation, Optical filters, Astronomy, Beam steering

Read Abstract +

Proceedings Article | 17 July 2000 Paper

Latest results on HgCdTe 2048x2048 and silicon focal plane arrays

Craig Cabelli, Donald Cooper, Allan Haas, Lester Kozlowski, Gary Bostrup, Annie Chen, John Blackwell, John Montroy, Kadri Vural, William Kleinhans, Klaus-Werner Hodapp, Donald Hall

Proceedings Volume 4028, (2000) https://doi.org/10.1117/12.391746

KEYWORDS: Sensors, Staring arrays, Multiplexers, Detector arrays, Mercury cadmium telluride, Silicon, Quantum efficiency, Infrared radiation, Short wave infrared radiation, Infrared detectors

Read Abstract +

Proceedings Article | 26 July 1999 Paper

2048x2048 HgCdTe focal plane arrays for astronomy applications

Kadri Vural, Lester Kozlowski, Donald Cooper, C. Chen, Gary Bostrup, Craig Cabelli, Jose Arias, Jagmohan Bajaj, Klaus-Werner Hodapp, Donald Hall, William Kleinhans, G. Price, J. Pinter

Proceedings Volume 3698, (1999) https://doi.org/10.1117/12.354532

KEYWORDS: Sensors, Staring arrays, Clocks, Multiplexers, Field effect transistors, Mercury cadmium telluride, Semiconducting wafers, Short wave infrared radiation, Astronomy, Mid-IR

Read Abstract +