Results 51 to 60 of about 83,260 (295)
Performance Improvement of Near Earth Space Survey (NESS) Wide-Field Telescope (NESS-2) Optics [PDF]
Journal of Astronomy and Space Sciences, 2010 We modified the optical system of 500 mm wide-field telescope of which point spread function showed an irregularity. The telescope has been operated for Near Earth Space Survey (NESS) located at Siding Spring Observatory (SSO) in Australia, and the ...
Sung-Yeol Yu +9 more
doaj +1 more source
Astronomy & Geophysics, 2014 In press with Astronomy & Geophysics, to be published in the June issue. Added a reference and slightly changed Figs.
openaire +4 more sources
Telescopic Network of Zhulong for Orbit Determination and Prediction of Space Objects
Remote SensingThe increasing proliferation of space debris, intermittent space incidents, and the rapid emergence of massive LEO satellite constellations pose significant threats to satellites in orbit.
Xiangxu Lei +6 more
doaj +1 more source
Low Vision Aids: Visual Outcomes and Barriers in Children with Low Vision
Delhi Journal of Ophthalmology, 2019 Aims: To study the demographic profile, cause of low vision, visual outcome and the barriers in using low vision aids (LVA). Design: Prospective observational clinical study.
V. R. Venkataramanan +5 more
doaj +1 more source
Advanced Engineering Materials, EarlyView.Picosecond direct laser interference patterning (DLIP) enables precise microstructure fabrication on stainless steel. Using a multiscan approach, high‐aspect‐ratio patterns are achieved. Fluence influences structure growth and homogeneity, with smaller periods yielding better uniformity.
Fabian Ränke +5 more
wiley +1 more source
Advanced Functional Materials, EarlyView.This research applies advanced laser beam shaping (LCoS‐SLM) to fabricate the Ti‐6Al‐4V alloy via laser powder bed fusion. A tailored beam is used to prevent martensite formation and create a dual α+β microstructure by controlling cooling rates.
Reza Esmaeilzadeh +8 more
wiley +1 more source
Ceramics Surface Design by Laser Texturing: A Review on Structures and Functionalities
Advanced Materials Interfaces, EarlyView.Laser surface texturing (LST) is a huge source for innovation in ceramics, as its versatility allows a swift production of very distinct functionalities for attaining high performances in several fields. This function‐oriented review gathers highly relevant applications of laser surface textured ceramics, from optical, thermal, electronic ...
E. Silva, A. Lopes, G. Miranda
wiley +1 more source
Gazi Üniversitesi Fen Bilimleri DergisiThe study aims experimental investigation of the sigma vectors in Nodal Aberration Theory for a customized non-aplanatic high-precision Cassegrain telescope under coma-free pivot point (CFPP) misalignment conditions.
Meltem Yeşiltepe +1 more
doaj +1 more source
Remote Sensing, 2022 Telescopic observations of Mercury consistently report systematic variations of the normalized spectral slope of visible-to-near-infrared reflectance spectra.
Kay Wohlfarth, Christian Wöhler
doaj +1 more source