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Related papers: The on-ground data reduction and calibration pipel…

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In this paper we describe in detail the implementation and main properties of a new inversion code for the polarized radiative transfer equation (VFISV: Very Fast inversion of the Stokes vector). VFISV will routinely analyze pipeline data…

Instrumentation and Methods for Astrophysics · Physics 2015-05-13 J. M. Borrero , S. Tomczyk , M. Kubo , H. Socas-Navarro , J. Schou , S. Couvidat , R. Bogart

PICARD is a CNES micro-satellite launched in June 2010 (Thuillier at al. 2006). Its main goal is to measure the solar shape, total and spectral irradiance during the ascending phase of the activity cycle. The SODISM telescope onboard PICARD…

A new data product from the Helioseismic and Magnetic Imager (HMI) onboard the Solar Dynamics Observatory (SDO) called Space-weather HMI Active Region Patches (SHARPs) is now available. SDO/HMI is the first space-based instrument to map the…

Solar and Stellar Astrophysics · Physics 2014-04-08 Monica G. Bobra , Xudong Sun , J. Todd Hoeksema , Michael J. Turmon , Yang Liu , Keiji Hayashi , Graham Barnes , K. D. Leka

The Solar Dynamics Observatory/Helioseismic and Magnetic Imager (SDO/HMI) filtergrams, taken at six wavelengths around the Fe I 6173.3 {\AA} line, contain information about the line-of-sight velocity over a range of heights in the solar…

Selected as the next NASA Medium Class Explorer mission, SPHEREx, the Spectro-Photometer for the History of the Universe, Epoch of Reionization, and Ices Explorer is planned for launch in early 2025. SPHEREx calibration data products…

Instrumentation and Methods for Astrophysics · Physics 2022-08-11 Sam Condon , Marco Viero , James Bock , Howard Hui , Phil Korngut , Hiromasa Miyasaka , Ken Manatt , Chi Nguyen , Hien Nguyen , Steve Padin

The High Frequency Instrument of Planck will map the entire sky in the millimeter and sub-millimeter domain from 100 to 857 GHz with unprecedented sensitivity to polarization ($\Delta P/T_{\tiny cmb} \sim 4\cdot 10^{-6}$) at 100, 143, 217…

Imaging polarimetry is a powerful tool for detecting and characterizing exoplanets and circumstellar environments. Polarimetry allows a separation of the light coming from an unpolarized source such as a star and the polarized source such…

Instrumentation and Methods for Astrophysics · Physics 2015-05-28 H. Canovas , M. Rodenhuis , S. V. Jeffers , M. Min , C. U. Keller

Solar Orbiter was launched on February 10, 2020 with the purpose of investigating solar and heliospheric physics using a payload of instruments designed for both remote and in-situ sensing. Similar to the recently launched Parker Solar…

The National Solar Observatory (NSO)'s Farside Pipeline is a critical tool of the space weather industry. It enables the detection and tracking of solar active regions that have rotated to the farside (invisible surface) of the Sun without…

Solar and Stellar Astrophysics · Physics 2025-12-25 Mitchell Creelman , Kiran Jain , Niles Oien , John Britanik , Thomas M. Wentzel

The Spectrometer and Telescope for Imaging X-rays (STIX) on board Solar Orbiter observes solar X-ray emission in the range of 4 – 150 keV and produces spectra and images of solar flares over a wide range of flare magnitudes. During…

The High Inclination Solar Mission (HISM) is a concept for an out-of-the-ecliptic mission for observing the Sun and the heliosphere. The mission profile is largely based on the Solar Polar Imager concept: initially spiraling in to a 0.48 AU…

Instrumentation and Methods for Astrophysics · Physics 2020-06-08 K. Kobayashi , L. Johnson , H. Thomas , S. McIntosh , D. McKenzie , J. Newmark , A. Heaton , J. Carr , M. Baysinger , Q. Bean , L. Fabisinski , P. Capizzo , K. Clements , S. Sutherlin , J. Garcia , K. Medina , D. Turse

Context. Remote sensing of weak and small-scale solar magnetic fields is of utmost relevance for a number of important open questions in solar physics. This requires the acquisition of spectropolarimetric data with high spatial resolution…

Instrumentation and Methods for Astrophysics · Physics 2016-05-18 F. A. Iglesias , A. Feller , K. Nagaraju , S. K. Solanki

We present preliminary results from the Southern Galactic Plane Survey (SGPS) Test Region and Parkes data. As part of the pilot project for the Southern Galactic Plane Survey, observations of a Test Region (325.5 deg < l < 333.5 deg; -0.5…

Spectropolarimetric reconstructions of the photospheric vector magnetic field are intrinsically limited by the 180$^\circ$-ambiguity in the orientation of the transverse component. So far, the removal of such an ambiguity has required…

The Spectrometer/Telescope for Imaging X-rays (STIX) is one of the 10 instruments on-board the scientific payload of ESA's Solar Orbiter mission. STIX provides hard X-ray imaging spectroscopy in the 4-150~keV energy range, observing hard…

Solar and Stellar Astrophysics · Physics 2023-04-05 Laura A. Hayes , Sophie Musset , Daniel M üller , S äm Krucker

SPHEREx is a NASA infrared astronomy mission that launched on March 12th, 2025 and is operating successfully in low-Earth orbit (LEO). The mission is currently observing the entire sky in 102 spectral channels in four independent all-sky…

In the summer of the year 2000, a NASA Small Explorer satellite, the High Energy Solar Spectroscopic Imager (HESSI), will be launched. It will consist of nine large, coaxial germanium detectors viewing the Sun through a set of Rotation…

Astrophysics · Physics 2007-05-23 D. M. Smith , R. P. Lin , J. McTiernan , A. S. Slassi-Sennou

The solar atmosphere is extremely dynamic, and many important phenomena develop on small scales that are unresolved in observations with the Helioseismic and Magnetic Imager (HMI) instrument on the Solar Dynamics Observatory (SDO). For…

Solar and Stellar Astrophysics · Physics 2015-08-06 Irina N. Kitiashvili , Sebastien Couvidat , Andreas Lagg

PLAnetary Transits and Oscillations of stars (PLATO) is a medium-class mission belonging to the European Space Agency (ESA) Cosmic Vision programme. The mission payload is composed of 26 telescopes and cameras which will observe…

Instrumentation and Methods for Astrophysics · Physics 2018-08-30 M. Rotundo , A. Leoni , L. Serafini , C. Del Vecchio Blanco , D. Davalle , D. Vangelista , M. Focardi , R. Cosentino , S. Pezzuto , G. Giusi , D. Biondi , L. Fanucci
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