Optical astronomy is the research area focused on observing and analyzing electromagnetic radiation in the optical band, typically encompassing near-ultraviolet, visible, and near-infrared wavelengths accessible to ground- and space-based telescopes using optical elements and detectors. It employs instruments such as imaging cameras, spectrographs, and polarimeters on refracting or reflecting telescopes to study the photometric, spectroscopic, and polarimetric properties of astronomical sources. The field addresses topics including stellar and galactic structure, interstellar medium characterization, planetary systems, and cosmological parameters, and it relies on advanced techniques in adaptive optics, precision calibration, and data reduction to mitigate atmospheric and instrumental effects.
The National Institute for Astrophysics (INAF) has released images of five galaxies in the local universe, taken with the Italian VST ( VLT Survey Telescope) managed by INAF in Chile. The new images show these iconic galaxies ...
Astronomy
Nov 15, 2024
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NASA's Nancy Grace Roman Space Telescope is one giant step closer to unlocking the mysteries of the universe. The mission has now received its final major delivery: the Optical Telescope Assembly, which includes a 7.9-foot ...
Astronomy
Nov 14, 2024
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Using the Large Sky Area Multi-Object Fiber Spectroscopic Telescope (LAMOST), Chinese astronomers have identified nearly 300 candidate supergiant stars in the Andromeda and Triangulum galaxies. The finding was reported in ...
On a mountain in northern Chile, scientists are carefully assembling the intricate components of the NSF–DOE Vera C. Rubin Observatory, one of the most advanced astronomical facilities in history. Equipped with an innovative ...
Astronomy
Nov 1, 2024
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For Halloween, the European Southern Observatory (ESO) reveals this spooktacular image of a dark nebula that creates the illusion of a wolf-like silhouette against a colorful cosmic backdrop. Fittingly nicknamed the Dark ...
Astronomy
Oct 31, 2024
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Astronomers have employed the Canada-France-Hawaii Telescope (CFHT) to perform comprehensive multiwavelength observations of a large and massive spiral galaxy known as UGC 2885. Results of the observational campaign, published ...
Russian astronomer Valerij Kozhevnikov has performed photometric observations of a candidate cataclysmic variable known as LAMOST J035913.61+405035.0. He detected 14 eclipses of this system. The finding was reported in a ...
Sometimes, seeing clearly requires complete black. For astronomy and precision optics, coating devices in black paint can cut down on stray light, enhancing images and boosting performance. For the most advanced telescopes ...
Nanophysics
Mar 12, 2024
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