Results 91 to 100 of about 5,542,325 (204)

Astronomical society magellanic cloud

open access: yes, 2009
Astronomical society "Magellanic cloud" was founded on May 16, 2001 in the town of Prokuplje, Serbia, by A. Simonovic, A. Valjarevic, then students of geography at the University of Pristina, Z. Mijajlovic professor of mathematics, S. Segan, professor of
Simonović, Aleksandar   +3 more
core   +1 more source

Surviving Tidal Tails Around the Milky Way Bulge Globular Cluster NGC 6355

open access: yesThe Astronomical Journal
We present results of the analysis of a set of images obtained in the field of the Milky Way bulge globular cluster NGC 6355 using the Dark Energy Camera, which is attached to the 4 m Blanco telescope of the Cerro-Tololo Interamerican Observatory.
Andrés E. Piatti
doaj   +1 more source

Cloud Removal in Full-disk Solar Images Using Deep Learning

open access: yesThe Astrophysical Journal Supplement Series
Ground-based solar telescopes often encounter cloud interference during observations, leading to varying degrees of cloud cover in solar images. Existing cloud removal methods face several challenges, including incomplete cloud removal, insufficient ...
Zhenhong Shang   +3 more
doaj   +1 more source

Image processing of historical astronomical plates [PDF]

open access: yes, 2018
© 2018 Astronomical Institute, Slovak Academy of Sciences. Many fields of X-ray astrophysics require multifrequency data including optical. Long-term data, such as provided by data archives, have special value.

core  

Beam Measurements of Full Stokes Parameters for the FAST L-band 19-beam Receiver

open access: yesThe Astronomical Journal
The Five-hundred-meter Aperture Spherical radio Telescope (FAST) has been fully operational since 2020 January 11. We present a comprehensive analysis of the beam structure for each of the 19 feed horns on FAST's L -band receiver across the Stokes I , Q ,
Xunzhou Chen   +9 more
doaj   +1 more source

Deep Learning Techniques for Astronomical Object Classification

open access: yes, 2022
As there are an infinite number of deep space objects, it is crucial to differentiate those space objects such as stars, galaxies, or quasars in recent or upcoming deep astronomical surveys. This task becomes very difficult because of the tedious procedure for separation between edgy and expanded sources, which makes this classification problem a ...
openaire   +1 more source

Photoelectric observations of lunar occultations at Engelhardt Astronomical Observatory [PDF]

open access: yes, 1998
Results of the lunar occultations observed from 1984 to 1997 at the Engelhardt Astronomical Observatory are reported. The times of lunar occultation for 63 stars, with a precision of a few milliseconds, and diameters for 12 stars have been ...
Rizvanov N., Shaimukhametov R.
core  

The Global Asteroseismology Project Proof of Concept: Asteroseismology of Massive Stars with Continuous Ground-based Observations

open access: yesThe Astronomical Journal
Massive (≳8 M _⊙ ) stars are the progenitors of many astrophysical systems, yet key aspects of their structure and evolution are poorly understood. Asteroseismology has the potential to solve these open puzzles; however, sampling both the short period ...
Noi Shitrit, Iair Arcavi
doaj   +1 more source

Monthly notices of the Astronomical Society of London

open access: yes
Mode of access ...
Astronomical Society of London
core  

Subspace Techniques for Radio-Astronomical Data Enhancement

open access: yes, 2008
Radio astronomical observations have very poor signal to noise ratios, unlike in other disciplines. On the other hand, it is possible to observe the object of interest for long time intervals as well as using a wider bandwidth. Traditionally, by averaging in time and in frequency, it has been possible to improve the signal to noise ratio of ...
openaire   +2 more sources

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