PtSi IR Array in Mosaic Configuration

The rapid progress in the focal plane technology enables us to use large format infrared sensors, such as 256 × 256 InSb/HgCdTe and 1040 × 1040 PtSi arrays. Infrared two-dimensional sensors make possible not only the imaging observations but a deep detection limit. The development of a large format infrared array is one of the most important breakthroughs in observational astronomy.We propose to build a mosaic infrared camera for the SUBARU 8-m telescope. The SUBARU telescope is designed to reach a diffraction limited image at infrared wavelengths with a wide field of view (six arcsec at the Cassegrain focus). The camera is designed to cover the entire field of view with PtSi infrared sensors and to employ a weighted shift-and-add operation and a real-time image processing. The efficiency of the mosaic infrared camera and power of the 8-m telescope have a strong potential to meet challenging problems. Most of the regions of the near infrared sky are not covered with enough sensitivity. It is essential to conduct infrared deep and wide surveys.

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A miniature design of near infrared spectrometer with wide field of view

10.1117/12.2072129 ◽

2014 ◽

Author(s):

Lei Feng ◽

Jinsong Zhou ◽

Dong Wang

Keyword(s):

Near Infrared ◽

Field Of View ◽

Wide Field ◽

Wide Field Of View ◽

Infrared Spectrometer ◽

Near Infrared Spectrometer

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Milky Way demographics with the VVV survey

Astronomy and Astrophysics ◽

10.1051/0004-6361/201833432 ◽

2018 ◽

Vol 619 ◽

pp. A4 ◽

Cited By ~ 25

Author(s):

Javier Alonso-García ◽

Roberto K. Saito ◽

Maren Hempel ◽

Dante Minniti ◽

Joyce Pullen ◽

...

Keyword(s):

Near Infrared ◽

Milky Way ◽

Stellar Populations ◽

Wide Field ◽

Public Survey ◽

Wide Field Of View ◽

Spread Function ◽

The Galaxy ◽

Infrared Wavelengths ◽

Galactic Stellar Populations

Context. The inner regions of the Galaxy are severely affected by extinction, which limits our capability to study the stellar populations present there. The Vista Variables in the Vía Láctea (VVV) ESO Public Survey has observed this zone at near-infrared wavelengths where reddening is highly diminished. Aims. By exploiting the high resolution and wide field-of-view of the VVV images we aim to produce a deep, homogeneous, and highly complete database of sources that cover the innermost regions of our Galaxy. Methods. To better deal with the high crowding in the surveyed areas, we have used point spread function (PSF)-fitting techniques to obtain a new photometry of the VVV images, in the ZY JHKs near-infrared filters available. Results. Our final catalogs contain close to one billion sources, with precise photometry in up to five near-infrared filters, and they are already being used to provide an unprecedented view of the inner Galactic stellar populations. We make these catalogs publicly available to the community. Our catalogs allow us to build the VVV giga-CMD, a series of color-magnitude diagrams of the inner regions of the Milky Way presented as supplementary videos. We provide a qualitative analysis of some representative CMDs of the inner regions of the Galaxy, and briefly mention some of the studies we have developed with this new dataset so far.

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Searches for Population III pair-instability supernovae: Predictions for ULTIMATE-Subaru and WFIRST

Publications of the Astronomical Society of Japan ◽

10.1093/pasj/psz035 ◽

2019 ◽

Vol 71 (3) ◽

Cited By ~ 3

Author(s):

Takashi J Moriya ◽

Kenneth C Wong ◽

Yusei Koyama ◽

Masaomi Tanaka ◽

Masamune Oguri ◽

...

Keyword(s):

First Generation ◽

Near Infrared ◽

Field Of View ◽

Large Field ◽

Wide Field ◽

Clusters Of Galaxies ◽

Infra Red ◽

Infrared Wavelengths ◽

Infrared Instruments ◽

Population Iii

Abstract ULTIMATE-Subaru (Ultra-wide Laser Tomographic Imager and MOS with AO for Transcendent Exploration on Subaru) and WFIRST (Wide Field Infra-Red Survey Telescope) are the next generation of near-infrared instruments that have a large field-of-view. They allow us to conduct deep and wide transient surveys in the near-infrared. Such a near-infrared transient survey enables us to find very distant supernovae that are redshifted to the near-infrared wavelengths. We have performed mock transient surveys with ULTIMATE-Subaru and WFIRST to investigate their ability to discover Population III pair-instability supernovae. We found that a five-year 1 deg2K-band transient survey with a point-source limiting magnitude of 26.5 mag with ULTIMATE-Subaru may find about two Population III pair-instability supernovae beyond the redshift of 6. A five-year 10 deg2 survey with WFIRST reaching 26.5 mag in the F184 band may find about seven Population III pair-instability supernovae beyond the redshift of 6. We also find that the expected numbers of the Population III pair-instability supernova detections increase by about a factor of 2 if the near-infrared transient surveys are performed towards clusters of galaxies. Other supernovae, such as Population II pair-instability supernovae, would also be detected in the same survey. This study demonstrates that these future wide-field near-infrared instruments allow us to investigate the explosions of first-generation supernovae by performing deep and wide near-infrared transient surveys.

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Near-IR wide-field-of-view Huygens metalens for outdoor imaging applications

Nanophotonics ◽

10.1515/nanoph-2019-0177 ◽

2020 ◽

Vol 9 (2) ◽

pp. 361-370 ◽

Cited By ~ 13

Author(s):

Jacob Engelberg ◽

Chen Zhou ◽

Noa Mazurski ◽

Jonathan Bar-David ◽

Anders Kristensen ◽

...

Keyword(s):

Near Infrared ◽

Field Of View ◽

Optical Systems ◽

Successful Implementation ◽

Wide Field ◽

Optical Surface ◽

Near Ir ◽

Ongoing Effort ◽

Good Imaging ◽

Wide Field Of View

AbstractThe ongoing effort to implement compact and cheap optical systems is the main driving force for the recent flourishing research in the field of optical metalenses. Metalenses are a type of metasurface, used for focusing and imaging applications, and are implemented based on the nanopatterning of an optical surface. The challenge faced by metalens research is to reach high levels of performance using simple fabrication methods suitable for mass production. In this paper, we present a Huygens nanoantenna-based metalens, designed for outdoor photographic/surveillance applications in the near infrared. We show that good imaging quality can be obtained over a field of view as large as ±15°. This first successful implementation of metalenses for outdoor imaging applications is expected to provide insight and inspiration for future metalens imaging applications.

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Anamorphic Infrared Camera with Wide Field of View and Optomechanical Automatic Athermalization Mechanism

Korean Journal of Optics and Photonics ◽

10.3807/kjop.2015.26.4.187 ◽

2015 ◽

Vol 26 (4) ◽

pp. 187-194

Author(s):

Hyunsook Kim ◽

Chang Min Ok

Keyword(s):

Infrared Camera ◽

Field Of View ◽

Wide Field ◽

Wide Field Of View

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Wide field of view visible and near infrared pushbroom airborne hyperspectral imager

Infrared Technology and Applications XLIV ◽

10.1117/12.2305253 ◽

2018 ◽

Author(s):

Shengwei Wang ◽

Ding Zhao ◽

Yueming Wang ◽

Yanan Yu ◽

Liyin Yuan ◽

...

Keyword(s):

Near Infrared ◽

Field Of View ◽

Wide Field ◽

Wide Field Of View

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STM studies of crystal growth

Proceedings, annual meeting, Electron Microscopy Society of America ◽

10.1017/s0424820100086179 ◽

1991 ◽

Vol 49 ◽

pp. 374-375

Author(s):

M. G. Lagally

Keyword(s):

Crystal Growth ◽

Molecular Beam ◽

Chemical Vapor ◽

Sputter Deposition ◽

Field Of View ◽

Scanning Tunneling ◽

Wide Field ◽

Tunneling Microscopy ◽

Wide Field Of View ◽

The One

It has been recognized since the earliest days of crystal growth that kinetic processes of all Kinds control the nature of the growth. As the technology of crystal growth has become ever more refined, with the advent of such atomistic processes as molecular beam epitaxy, chemical vapor deposition, sputter deposition, and plasma enhanced techniques for the creation of “crystals” as little as one or a few atomic layers thick, multilayer structures, and novel materials combinations, the need to understand the mechanisms controlling the growth process is becoming more critical. Unfortunately, available techniques have not lent themselves well to obtaining a truly microscopic picture of such processes. Because of its atomic resolution on the one hand, and the achievable wide field of view on the other (of the order of micrometers) scanning tunneling microscopy (STM) gives us this opportunity. In this talk, we briefly review the types of growth kinetics measurements that can be made using STM. The use of STM for studies of kinetics is one of the more recent applications of what is itself still a very young field.

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