Results 41 to 50 of about 1,249,922 (287)
The Astrophysical Journal Supplement SeriesThe Gemini Planet Imager (GPI), an extreme adaptive optics instrument on Gemini South, has been pivotal in the advancement of the debris-disk field.
Katie A. Crotts +12 more
doaj +1 more source
Square Root Compression and Noise Effects in Digitally Transformed Images
The Astrophysical Journal, 2022 We report on a particular example of noise and data representation interacting to introduce systematic error into scientific measurements. Many instruments collect integer digitized values and apply nonlinear coding, in particular square root coding, to ...
Craig E. DeForest +3 more
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Optimizing ISOCAM data processing using spatial redundancy [PDF]
, 2000 We present new data processing techniques that allow to correct the main instrumental effects that degrade the images obtained by ISOCAM, the camera on board the Infrared Space Observatory (ISO).
Abergel, A. +3 more
core +2 more sources
Advanced Functional Materials, EarlyView.Two pyridinium‐based ionic liquid templated hybrid manganese halides, (C4Py)2[MnCl4] and (C4Py)2[MnBr4], display similar bulk structures but show significantly different photoluminescence behaviors due to the bromine heavy‐atom effect. Their stable local Mn environments remain intact even in the molten state, allowing applications such as luminescence ...
Biswajit Bhattacharyya +22 more
wiley +1 more source
An Algorithm Architecture for Radio Interferometric Data Processing
The Astronomical JournalWe present a foundational, scalable algorithm architecture for processing data from aperture synthesis radio telescopes. The analysis leading to the architecture is rooted in the theory of aperture synthesis, signal processing, and numerical optimization,
S. Bhatnagar +4 more
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The Evryscope Fast Transient Engine: Real-time Detection for Rapidly Evolving Transients
The Astrophysical Journal Supplement Series, 2023 Astrophysical transients with rapid developments on subhour timescales are intrinsically rare. Due to their short durations, events like stellar superflares, optical flashes from gamma-ray bursts, and shock breakouts from young supernovae are difficult ...
Hank Corbett +10 more
doaj +1 more source
Acquisition and analysis of adaptive optics imaging polarimetry data [PDF]
, 1999 The process of data taking, reduction and calibration of near-infrared imaging polarimetry data taken with the ESO Adaptive Optics System ADONIS is described. The ADONIS polarimetric facility is provided by a rotating wire grid polarizer.
Ageorges, N., Walsh, J. R.
core +3 more sources
Advanced Functional Materials, EarlyView.Gold bipyramids can act as efficient plasmonic nanoheaters, but they often reshape during laser heating. This study shows that oxygen nanobubbles drive oxidative etching and that surface ligands control stability. CTAB‐ and citrate‐coated particles blunt and lose optical performance, whereas polystyrene sulfonate preserves shape and heating by ...
Irene López‐Sicilia +7 more
wiley +1 more source
Imaging Stars by Performing Full-Stokes Optical Interferometric Polarimetry [PDF]
Journal of Astronomy and Space Sciences, 2012 Optical interferometry and polarimetry have separately provided new insights into stellar astronomy, especially in the fields of fundamental parameters and atmospheric models.
Nicholas M. Elias II +6 more
doaj +1 more source
The Hubble Legacy Archive NICMOS Grism Data
, 2008 The Hubble Legacy Archive (HLA) aims to create calibrated science data from the Hubble Space Telescope archive and make them accessible via user-friendly and Virtual Observatory (VO) compatible interfaces.
A. Micol +28 more
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