Results 181 to 190 of about 200,926 (234)

Astronomical calibration of the middle Cambrian in Baltica: Global carbon cycle synchronization and climate dynamics

Jamart V, Pas D, Hinnov L, Spangenberg J, Adatte T, Nielsen A, Schovsbo N, Thibault N, Arts M, Daley A.   +9 more
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The astronomical method and its application to the chronology of ancient India / K.L. Daftari

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A Faint Progenitor System for the Faint Supernova 2024vjm

Zimmerman E, Gal-Yam A, Groot P, Ofek E, Roestel Jv, Pastorello A, Valenti S, Ravi A, Chen P, Schulze S, Blagorodnova N, Wavasseur M, Gómez-Muñoz M, Tranin H, de Wet S, Leloudas G, Vreeswijk P, Kwok L, Schwab M, Jha S, Maguire K, Sand D, Stringer E, Kupfer T, Faran T, Anderson J, Andrews J, Andrews M, Badash A, Bloemen S, Bostroem K, Chen T, Valle MD, Dimitriadis G, Dong Y, Farah J, Gillanders J, Godson B, Gromadzki M, Hiramatsu D, Hoang E, Howell D, Janzen D, Kuncarayakti H, Li J, Lyman J, Maeda K, Magee M, Mehta D, Milligan A, Moran S, Ni YQ, O’Neill D, Pearson J, Pieterse D, Pignata G, Reguitti A, Reichart D, Retamal NM, Santos R, Scaringi S, Shrestha M, Srivastav S, Stoppa F, Subrayan B, Valerin G, Wang X, Wynn K, Yaron O, Zang W.   +69 more
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Integral methods in astronomical spectroscopy

Astrophysical Bulletin, 2010
We discuss the milestones of development of the integral methods used in the optical spectroscopy of astronomical objects. We analyze the reasons why some of these methods did not get wide practical application. We demonstrate that a combination of integral methods with multichannel detectors allow increasing the efficiency of the existing astronomical
V. E. Panchuk, M. E. Sachkov, M. V. Yushkin, M. V. Yakopov   +3 more
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Polarization measuring astronomical instrument: an improved method

Romanian Astronomical Journal, 2023
"This work deals with a new theoretical method proposed with the intent of improving the quality of astronomical polarimetric data. The theoretical method is ap- plied to one of the simplest possible birefringent type polarizer device constructs, being a hybrid measurement procedure between the fixed position angles and the continu- ous rotation ...
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Astronomical image restoration using Bayesian methods

2016 IEEE Chinese Guidance, Navigation and Control Conference (CGNCC), 2016
This paper is devoted to the combination of several prior models in Bayesian image restoration and increasingly wide utilization in astronomical images. Bayesian methods introduce image models using prior knowledge and address the ill-posed problem in the registration parameter estimation.
null Xiaoping Shi, null Rui Guo, null Zicai Wang   +2 more
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Codebook Design Method for Astronomical Images Compression

Full Text Book of Minar Congress9, 2023
The searching in binary codebook of a combination the Block Truncation Coding and Vector Quantization methods BTC and VQ desires a time consuming process because the full codebook search for every input vector toward discovery the best matched codevector or code word, so, in this paper, at first, a small binary codebook has been designed then by ...
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Automatic processing method for astronomical CCD images

SPIE Proceedings, 2002
Since several hundreds of CCD images are obtained with the CCD camera in the Lower Latitude Meridian Circle (LLMC) every observational night, it is essential to adopt an automatic processing method to find the initial position of each object in these images, to center the object detected and to calculate its magnitude.
Binhua Li, Lei Yang, Wei Mao
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