Results 101 to 110 of about 2,141 (221)
The Astrophysical JournalWe present resolved images of the inner disk component around HD 141569A using the Magellan adaptive optics system with the Clio2 1–5 μ m camera, offering a glimpse of a complex system thought to be in a short evolutionary phase between protoplanetary ...
Jay K. Kueny +6 more
doaj +1 more source
Data-calibrated point spread function prediction
Astronomy & AstrophysicsContext. Precise knowledge of the point spread function (PSF) underpins many data analysis steps in astronomy, from photometry and astrometry to source de-blending and deconvolution.
Kuznetsov Arseniy +3 more
doaj +1 more source
Development of visual performance based mesopic photometry [PDF]
, 2005 This work started by investigating the applicability of the photopic V(λ) function to predict visual task performance at mesopic light levels. Visual acuity and pedestrian visibility experiments were carried out in varied lighting and viewing conditions.
Eloholma, Marjukka
core
Unraveling the active site cover of coproheme decarboxylase from Listeria monocytogenes
The FEBS Journal, EarlyView.During heme biosynthesis in Gram‐positive bacteria, coproheme decarboxylase (ChdC) catalyzes the conversion of four‐propionate substrate coproheme to the two propionate product heme b. Its active site is universally covered by a flexible linking loop. This study identifies an important histidine residue, which stabilizes the loop in a ChdC homolog.
Nikolaus Falb +4 more
wiley +1 more source
GALACTICNUCLEUS: A high-angular-resolution JHKs imaging survey of the Galactic center
Astronomy & AstrophysicsContext. The center of the Milky Way presents a unique environment of fundamental astrophysical interest. However, its extreme crowding and extinction make this region particularly challenging to study.
Martínez-Arranz Á. +3 more
doaj +1 more source
, 2012 This paper discusses an innovative simulation model based approach for long exposure atmospheric point spread function (PSF) reconstruction in the context of laser guide star (LGS) multiconjugate adaptive optics (MCAO).
V\ue9ran, J.-P. +4 more
core +1 more source
Towards high-precision exoplanet photometry with the Huntsman telescope
, 2019 Empirical thesis.Bibliography: pages 55-59.1. Introduction -- 2. The Huntsman telescope -- 3. Methodology -- 4. Photometry results -- 5. Summary and discussion -- Appendix -- References.The Huntsman Telescope, situated at Siding Spring Observatory in ...
Alvarado Montes, Jaime Andrés
core +2 more sources
Measurement of the point-spread function of a noisy imaging system [PDF]
, 2007 The averaged point-spread function (PSF) estimation of an image acquisition system is important for many computer vision applications, including edge detection and depth from defocus. The paper compares several mathematical models of the PSF and presents
Richard C Staunton +5 more
core +1 more source
The hidden science of haptics: A pedagogical review of tactile evaluation in cosmetics
International Journal of Cosmetic Science, Volume 48, Issue 3, Page 600-634, June 2026.This review explores the physiological basis of tactile perception and critically examines classical and emerging sensory methods used in cosmetics, advocating for broader methodological integration and recognition of sensory analysis in the field. Abstract Sensory analysis is a cornerstone of cosmetic development, yet remains underrepresented in peer ...
Morgane Postec +2 more
wiley +1 more source
A Multiband Study of the HR 4796A Disk in the Optical Using MagAO-X
The Astrophysical JournalWe present total intensity images of the debris disk around HR 4796A from observations spanning 2023 to 2025 with the Magellan extreme adaptive optics instrument (MagAO-X).
Jay K. Kueny +20 more
doaj +1 more source