Methanol immersion reduces spherical aberration of water dipping lenses at long wavelengths used in multi-photon laser scanning microscopy [PDF]
, 2012 Dipping objectives were tested for multi-photon laser scanning microscopy, since their large working distances are advantageous for thick specimens and the absence of a coverslip facilitates examination of living material.
Bestvater +28 more
core +1 more source
INDUCED SPHERICAL ABERRATION OF THE CORNEA AND STRESS ACCOMMODATION IN CHILDREN WITH MYOPIA
Российский офтальмологический журнал, 2018 Purpose: to study the relationship between spherical aberrations of the cornea induced by orthokeratologic (OK) lenses and accommodation stress and to assess the effectiveness of treating accommodation overstrain with Irifrin BK 2.5 % in myopic patients ...
M. V. Makhova +2 more
doaj +1 more source
Photonics, 2022 Spectroradiometers exhibit the smallest aberration and the optimum response at the field-of-view (FOV) center. The aberration increases and the response deteriorates at positions further away from the FOV center, which leads to nonuniformity in the ...
Zhaoqiang Jiao +5 more
doaj +1 more source
Aberration-Corrected Lorentz Microscopy [PDF]
Microscopy and Microanalysis, 2010 Extended abstract of a paper presented at Microscopy and Microanalysis 2010 in Portland, Oregon, USA, August 1 – August 5, 2010.
NT Nuhfer, A Budruk, M De Graef
openaire +1 more source
Exoplanet detection with simultaneous spectral differential imaging: effects of out-of-pupil-plane optical aberrations [PDF]
, 2006 Imaging faint companions (exoplanets and brown dwarfs) around nearby stars is currently limited by speckle noise. To efficiently attenuate this noise, a technique called simultaneous spectral differential imaging (SSDI) can be used.
Macintosh, Bruce +2 more
core +2 more sources
Fast Restoration of Aberration-Degraded Extended Object Based on Local Region Abstraction
IEEE Photonics Journal, 2018 The compensating capability of wavefront sensorless adaptive optics (WFSless AO) system for extended object images degraded by aberration is severely limited to correction speed due to largely sized images and low frame rate of camera.
Lianghua Wen +8 more
doaj +1 more source
Journal of Analytical Science and Technology, 2020 Background The contrast transfer function (CTF) is an important principle in the field of transmission electron microscopy (TEM) imaging. It provides information on how the electron wave that interacted with a sample (in frequency domain) in an objective
Sang-Chul Lee +3 more
doaj +1 more source
Ground-layer wavefront reconstruction from multiple natural guide stars [PDF]
, 2007 Observational tests of ground layer wavefront recovery have been made in open loop using a constellation of four natural guide stars at the 1.55 m Kuiper telescope in Arizona.
Athey A. +17 more
core +3 more sources
Active Optics and Aberration Correction Technology for Sparse Aperture Segmented Mirrors
Applied Sciences, 2023 Active optics and aberration correction techniques for sparse aperture segmented mirrors are studied. A finite element model of the sparse aperture segmented mirror was established, and a multi-aperture aberration polynomial was derived. According to the
Benlei Zhang +3 more
doaj +1 more source
Spherical aberration correction in a scanning transmission electron microscope using a sculpted foil
, 2017 Nearly twenty years ago, following a sixty year struggle, scientists succeeded in correcting the bane of electron lenses, spherical aberration, using electromagnetic aberration correction.
Arie, Ady +7 more
core +1 more source