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A method for optimal reduction of data taken with multi-fiber spectrographs is described, based on global correction of their geometrical distortion. Though it was specifically developed for reducing observations performed at Palomar…

天体物理学 · 物理学 2009-11-07 Maurice Viton , Bruno Milliard

We present the data reduction pipeline for CHARIS, a high-contrast integral-field spectrograph for the Subaru Telescope. The pipeline constructs a ramp from the raw reads using the measured nonlinear pixel response, and reconstructs the…

The data volumes generated by modern radio interferometers, such as the SKA precursors, present significant computational challenges for imaging pipelines. Addressing the need for high-performance, portable, and scalable software, we…

天体物理仪器与方法 · 物理学 2026-01-28 Giovanni Lacopo , Emanuele De Rubeis , Claudio Gheller , Giuliano Taffoni , Luca Tornatore

The Galactic O-Star Spectroscopic Survey (GOSSS) is an ambitious project that is observing all known Galactic O stars with B < 13 in the blue-violet part of the spectrum with R-2500. It is based on version 2 of the most complete catalog to…

天体物理仪器与方法 · 物理学 2011-01-19 Alfredo Sota , Jesús Maíz Apellániz

Long wavelength infrared (8-13 $\mu$m) spectroscopy is invaluable for detecting molecular features in the atmospheres of gas giant and terrestrial exoplanets. The nulling-optimized mid-infrared camera (NOMIC) on the Large Binocular…

地球与行星天体物理 · 物理学 2024-07-08 Brittany E. Miles , Steve Ertel , Kevin Wagner , Daniel Apai

Aims: Integral Field Spectroscopy (IFS) is a powerful approach for the study of nearby galaxies since it enables a detailed analysis of their resolved physical properties. Here we present the sample of nearby galaxies selected to exploit…

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…

iLocater is a near-infrared (NIR) radial velocity (RV) spectrograph that is being developed for the Large Binocular Telescope in Arizona. Unlike seeing limited designs, iLocater uses adaptive optics to inject starlight directly into a…

天体物理仪器与方法 · 物理学 2019-01-23 Eric B. Bechter , Andrew J. Bechter , Justin R. Crepp , Jonathan Crass , David King

We describe the reduction of data taken with the PACS instrument on board the Herschel Space Observatory in the Science Demonstration Phase of the Herschel-ATLAS (H-ATLAS) survey, specifically data obtained for a 4x4-deg^2 region using…

Many different methods exist for reducing data obtained when an astronomical source is studied with a two-channel polarimeter, such as a Wollaston prism system. This paper presents a rigorous method of reducing the data from raw aperture…

天体物理学 · 物理学 2007-05-23 G. Leyshon

Large Array of imaging atmospheric Cherenkov Telescope (LACT) is an array of 32 Cherenkov telescopes with 6-meter diameter mirrors to be constructed at the LHAASO site, aiming to enhance our understanding of ultra-high energy gamma ray…

高能天体物理现象 · 物理学 2025-09-26 Zhipeng Zhang , Ruizhi Yang , Shoushan Zhang

The Infrared Spectrograph (IRS) is one of three science instruments on the Spitzer Space Telescope. The IRS comprises four separate spectrograph modules covering the wavelength range from 5.3 to 38micron with spectral resolutions, R \~90…

天体物理学 · 物理学 2011-05-05 J. R. Houck , the Spitzer/IRS team

When interpreting spectropolarimetric observations of the solar atmosphere, wavelength variations of the emergent intensity and polarization translate into information on the depth stratification of physical parameters. We aim to quantify…

太阳与恒星天体物理 · 物理学 2025-01-29 C. J. Díaz Baso , I. Milić , L. Rouppe van der Voort , R. Schlichenmaier

When recording spectra from the ground, atmospheric turbulence causes degradation of the spatial resolution. We present a data reduction method that restores the spatial resolution of the spectra to their undegraded state. By assuming that…

天体物理仪器与方法 · 物理学 2017-12-13 Michiel van Noort

The Compton camera is a gamma-ray imaging device developed in the 1970s. In the 1990s, the COMPTEL detector onboard the CGRO was the first to utilize a Compton camera for MeV all-sky survey observations. Recently, various Compton cameras…

The integral-field unit (IFU) spectrometers on board the James Webb Space Telescope (JWST) undersample the nearly diffraction-limited point spread function provided by the telescope optics. This undersampling produces large oscillating…

天体物理仪器与方法 · 物理学 2026-03-31 David R. Law , Melanie Clarke

Airglow emission lines, which dominate the optical-to-near-IR sky radiation, show strong, line-dependent variability on various time scales. Therefore, the subtraction of the sky background in the affected wavelength regime becomes a…

天体物理仪器与方法 · 物理学 2014-07-09 S. Noll , W. Kausch , S. Kimeswenger , M. Barden , A. M. Jones , A. Modigliani , C. Szyszka , J. Taylor

We present a new solar flux atlas with the aim to understand wavelength precision and accuracy in solar benchmark data. The atlas covers the wavelength range 405--2300 nm and was observed at the Institut f\"ur Astrophysik, G\"ottingen (IAG)…

太阳与恒星天体物理 · 物理学 2016-02-24 Ansgar Reiners , Niclas Mrotzek , Ulrike Lemke , Johannes Hinrichs , Klaus Reinsch

The techniques and software tools developed for the reduction and analysis of ISO-CAM/PHOT data with the LARI method are presented. The method, designed for the detection of faint sources in ISO raster observations, is based on the…

Extrasolar planets observation and characterization by high contrast imaging instruments is set to be a very important subject in observational astronomy. Dedicated instruments are being developed to achieve this goal with very high…

天体物理学 · 物理学 2009-11-13 Arthur Vigan , Maud Langlois , Claire Moutou , Kjetil Dohlen