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Related papers: "Slow-Scanning" in Ground-Based Mid-Infrared Obser…

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We present the characterization and calibration of the slow-scan observation mode of the Infrared Camera (IRC) on-board AKARI. The IRC slow-scan observations were operated at the S9W (9 $\mu$m) and L18W (18 $\mu$m) bands. We have developed…

Instrumentation and Methods for Astrophysics · Physics 2015-06-11 Satoshi Takita , Norio Ikeda , Yoshimi Kitamura , Daisuke Ishihara , Hirokazu Kataza , Akiko Kawamura , Shinki Oyabu , Munetaka Ueno , Issei Yamamura

The Space Infrared Telescope Facility (SIRTF) will drift away from the Earth at about 0.1 AU/yr. Microlensing events will therefore have different characteristics as seen from the satellite and the Earth. From the difference, it is possible…

Astrophysics · Physics 2009-10-30 Andrew Gould

Stereoscopic spectral imaging is an observing technique that affords rapid acquisition of limited spectral information over an entire image plane simultaneously. Light from a telescope is dispersed into multiple spectral orders, which are…

Astrophysics · Physics 2007-05-23 Craig E. DeForest , Charles C. Kankelborg

The Sub-millimetre Common User Bolometer Array (SCUBA) at the JCMT employs a chopping and nodding observation technique to remove variations in the atmospheric signal and improve the long term stability of the instrument. In order to…

Astrophysics · Physics 2009-11-10 M. Zemcov , M. Halpern , E. Pierpaoli

We present an overview of SPICA, the Space Infrared Telescope for Cosmology and Astrophysics, a world-class space observatory optimized for mid- and far-IR astronomy (from 5 to ~210um) with a cryogenically cooled ~3.2m telescope (<6 K). Its…

Instrumentation and Methods for Astrophysics · Physics 2019-08-14 Javier R. Goicoechea , Takao Nakagawa

We present details of the second part of the Southern Infrared Proper Motion Survey (SIPS). Here accurate relative astrometry allows us to reduce the minimum proper motion to 0.1 arcseconds per year. This yields 6904 objects with proper…

Astrophysics · Physics 2009-11-13 N. R. Deacon , N. C. Hambly

We use the mock catalog of galaxies, constructed based on the COSMOS galaxy catalog including information on photometric redshifts (photo-z) and SED types of galaxies, in order to study how to define a galaxy subsample suitable for weak…

Cosmology and Nongalactic Astrophysics · Physics 2015-05-18 Atsushi J. Nishizawa , Masahiro Takada , Takashi Hamana , Hisanori Furusawa

Many lens surveys have hitherto used observations of large samples of background sources to select the small minority which are multiply imaged by lensing galaxies along the line of sight. Recently surveys such as SLACS and OLS have…

Astrophysics · Physics 2008-11-26 N. Jackson , I. W. A. Browne

Current ground-based submillimeter instruments (e.g. SCUBA-2, SHARC-2 and LABOCA) have hundreds to thousands of detectors, sampled at tens to hundreds of hertz, generating up to hundreds of gigabytes per night. Since noise is correlated…

Instrumentation and Methods for Astrophysics · Physics 2014-05-05 Gaelen Marsden , Adam Brazier , Tim Jenness , Jack Sayers , Douglas Scott

This paper introduces an innovative approach to silicon and glass via inspection, which combines hybrid field microscopy with photometric stereo. Conventional optical microscopy techniques are generally limited to superficial inspections…

Image and Video Processing · Electrical Eng. & Systems 2025-05-09 Gugeong Sung

Spectroscopy sampling along delay time is typically performed with uniform delay spacing, which has to be low enough to satisfy the Nyquist-Shannon sampling theorem. The sampling theorem puts the lower bound for the sampling rate to ensure…

Chemical Physics · Physics 2025-03-04 Junyan Sun , Deran Zhang , Ziqian Cheng , Dazhi Xu , Hui Dong

Surveillance and surveying are two important applications of empirical research. A major part of terrain modelling is supported by photographic surveys which are used for capturing expansive natural surfaces using a wide range of sensors --…

Image and Video Processing · Electrical Eng. & Systems 2023-05-16 Maniratnam Mandal , Venkatesh K. Subramanian

The brighter-fatter effect affects all CCD sensors to various degrees. Deep-depleted thick sensors are seriously affected and the measurement of galaxy shapes for cosmic shear measurements requires an accurate correction of the effect in…

Instrumentation and Methods for Astrophysics · Physics 2023-02-22 Pierre Astier , Nicolas Regnault

The mid-infrared emission from 18 nearby galaxies imaged with the IRAC instrument on Spitzer Space Telescope samples the spatial distributions of the reddening-free stellar photospheric emission and the warm dust in the ISM. These two…

Astrophysics · Physics 2009-11-10 M. A. Pahre , M. L. N. Ashby , G. G. Fazio , S. P. Willner

The statistical power of weak lensing measurements is principally driven by the number of high redshift galaxies whose shapes are resolved. Conventional wisdom and physical intuition suggest this is optimised by deep imaging at long (red or…

The Japanese infrared astronomical satellite AKARI performed ~4000 pointed observations for 16 months until the end of 2007 August, when the telescope and instruments were cooled by liquid Helium. Observation targets include solar system…

Instrumentation and Methods for Astrophysics · Physics 2016-02-17 Fumi Egusa , Fumihiko Usui , Kazumi Murata , Takuji Yamashita , Issei Yamamura , Takashi Onaka

We present a near-field optical technique for second harmonic imaging using bare tapered optical fiber tip illuminated with femtosecond laser pulses. Enhancement of electric field at the tip of the fiber results in enhanced second harmonic…

Materials Science · Physics 2009-10-31 I. I. Smolyaninov , H. Y. Liang , S. Aggarwal , R. Ramesh , C. H. Lee , C. C. Davis

Single-pixel imaging via compressed sensing can reconstruct high-quality images from a few linear random measurements of an object/scene known a priori to be sparse or compressive, by using a point/bucket detector without spatial…

Image and Video Processing · Electrical Eng. & Systems 2019-09-25 Wen-Kai Yu

Recent advances in cosmic-ray detectors have provided exceptional sensitivities of dark matter with high angular resolution. Motivated by this, we present a comprehensive study of cosmic-ray flux from dark matter decay in dwarf spheroidal…

Cosmology and Nongalactic Astrophysics · Physics 2023-05-24 Wen Yin , Kohei Hayashi

Dual-comb spectroscopy has been proven a powerful tool in molecular characterization, which remains challenging to implement in the mid-infrared region due to difficulties in the realization of two mutually locked comb sources and efficient…