Results 31 to 40 of about 14,333 (240)
The Infrared Imaging Spectrograph (IRIS) for TMT: optical design of IRIS imager with "Co-axis double TMA" [PDF]
, 2016 IRIS (InfraRed Imaging Spectrograph) is one of the first-generation instruments for the Thirty Meter Telescope (TMT). IRIS is composed of a combination of near-infrared (0.84--2.4 $\mu$m) diffraction limited imager and integral field spectrograph.
Harakawa, Hiroki +12 more
core +3 more sources
Photorefractive keratectomy results in myopic patients with thin cornea eyes
Oman Journal of Ophthalmology, 2015 Background: To evaluate the results of visual acuity and quality, and corneal integrity in myopic patients with a thin cornea who received photorefractive keratectomy (PRK).
Hassan Hashemi +2 more
doaj +1 more source
A New Reflecting Microscope Objective with Two Concentric Spherical Mirrors [PDF]
, 1969 ...
Beck, J. L.
core +1 more source
Results from the GMT Ground-Layer Experiment at the Magellan Telescopes [PDF]
, 2006 We present results from our two year study of ground-layer turbulence as seen through the 6.5-meter Magellan Telescopes at Las Campanas Observatory. The experiment consists of multiple, moderate resolution, Shack-Hartmann wavefront sensors deployed over ...
Athey, A. +3 more
core +3 more sources
Visual acuity under combined astigmatism and coma: Optical and neural adaptation effects
Journal of Vision, 2011 Previous studies suggest that certain combinations of coma and astigmatism improve optical quality over astigmatism alone. We tested these theoretical predictions on 20 patients. Visual acuity (VA) was measured under best spherical correction for different conditions: low- and higher order aberrations corrected, in the presence of 0.5 D of induced ...
Gracia, Pablo de +4 more
openaire +3 more sources
The Centration Dilemma in Refractive Corrections: Why Is It Still a Dilemma and How to Cope?
Photonics(1) Background: Defining the optimum center for laser refractive corrections is difficult, with many of the available approaches having pros and cons. Decentered ablations result in undesirable side effects like halos, glare, monocular diplopia, and a ...
Samuel Arba Mosquera, Shwetabh Verma
doaj +1 more source
Correction of Optical Aberrations in Elliptic Neutron Guides
, 2012 Modern, nonlinear ballistic neutron guides are an attractive concept in neutron beam delivery and instrumentation, because they offer increased performance over straight or linearly tapered guides.
Andersen, Ken H. +4 more
core +1 more source
, 2019 Digital aberration measurement and removal play a prominent role in computational imaging platforms aimed at achieving simple and compact optical arrangements.
Huang, Xizhi +5 more
core +1 more source
Optical identifications of IRAS point sources: the Fornax, Hydra I and Coma clusters [PDF]
Monthly Notices of the Royal Astronomical Society, 1991 Optical identifications are presented for 66 IRAS point sources in the region of the Fornax cluster of galaxies, 106 IRAS point sources in the region of the Hydra I cluster of galaxies, and 59 IRAS point sources in the region of the Coma cluster of galaxies.
G. Wang +4 more
openaire +1 more source
PhotonicsWe present extended capabilities in simple liquid crystal-based devices that are applicable to adaptive optics and other related fields requiring wavefront manipulation.
Alec Xu +5 more
doaj +1 more source