Applied Sciences, 2021 Due to the space and time constraints of turbulence measurement equipment and the experiment scene, it is difficult to obtain the atmosphere refractive index structure constant over the ocean.
Manman Xu +5 more
semanticscholar +1 more source
Optical blocking performance of CCDs developed for the X-ray Astronomy Satellite XRISM [PDF]
, 2020 We have been developing P-channel Charge-Coupled Devices (CCDs) for the upcoming X-ray Astronomy Satellite XRISM, planned to be launched in 2021. While the basic design of the CCD camera (Soft X-ray Imager: SXI) is almost the same as that of the lost ...
H. Uchida +45 more
semanticscholar +1 more source
Spectroscopic evidence for a large spot on the dimming Betelgeuse
Nature Communications, 2021 The reason of the dimming of Betelgeuse is debated. Here, the authors show effective temperature decrease that can be explained by a large spot.
Sofya Alexeeva +6 more
doaj +1 more source
Optical Polarimetry in Undergraduate Education [PDF]
EPJ Web of Conferences, 2019 Polarimetry plays an important part in observational astronomy, but it is all too often given limited attention in astronomy textbooks. Coupled with a sometimes confusing mathematical introduction, students may feel that polarization is a difficult ...
Topasna Gregory
doaj +1 more source
Large-format platinum silicide microwave kinetic inductance detectors for optical to near-IR astronomy. [PDF]
Optics Express, 2017 We have fabricated and characterized 10,000 and 20,440 pixel Microwave Kinetic Inductance Detector (MKID) arrays for the Dark-speckle Near-IR Energy-resolved Superconducting Spectrophotometer (DARKNESS) and the MKID Exoplanet Camera (MEC).
P. Szypryt +12 more
semanticscholar +1 more source
Frequency-insensitive spatiotemporal shaping of single photon in multiuser quantum network
npj Quantum Information, 2023 Exploiting the fundamental features of quantum mechanics, an entanglement-based quantum network offers a promising platform for many dramatic applications such as multi-user cryptography.
Yiwen Huang +9 more
doaj +1 more source
Impact of Satellite Constellations on Optical Astronomy and Recommendations Toward Mitigations
, 2020 In May 2019 SpaceX launched its first batch of 60 Starlink communication satellites, which surprised astronomers and laypeople with their appearance in the night sky.
ConstanceWalker +39 more
semanticscholar +1 more source
SHIMM: A Versatile Seeing Monitor for Astronomy [PDF]
Monthly notices of the Royal Astronomical Society, 2023 Characterisation of atmospheric optical turbulence is crucial for the design and operation of modern ground–based optical telescopes. In particular, the effective application of adaptive optics correction on large and extremely large telescopes relies ...
S. Perera +5 more
semanticscholar +1 more source
Optical Property and Alighment of KAO Wide Field Telescope (NEOPAT-3) [PDF]
Journal of Astronomy and Space Sciences, 2004 We have investigated the optical property of the KAO(Korea Astronomy Observatory) wide field telescope (named NEOPAT-3; Near Earth Object and Satellite Patrol-3) and aligned optical system.
In-Soo Yuk +9 more
doaj +1 more source
Optical Orbit Determination of a Geosynchronous Earth Orbit Satellite Effected by Baseline Distances between Various Ground-based Tracking Stations Ⅱ: COMS Case with Analysis of Actual Observation Data [PDF]
Journal of Astronomy and Space Sciences, 2015 We estimated the orbit of the Communication, Ocean and Meteorological Satellite (COMS), a Geostationary Earth Orbit (GEO) satellite, through data from actual optical observations using telescopes at the Sobaeksan Optical Astronomy Observatory (SOAO) of
Ju Young Son +11 more
doaj +1 more source