Results 1 to 10 of about 141,058 (288)
Revitalizing Astronomical Azimuth Determination: Integrating Modern Computing with Traditional Techniques [PDF]
SensorsIt is not widely recognized today that astronomical methods for azimuth determination continue to rank among the most accurate techniques for establishing orientation.
Luigi Barazzetti
doaj +4 more sources
Parametric high resolution techniques for radio astronomical imaging [PDF]
IEEE Journal of Selected Topics in Signal Processing, 2008 The increased sensitivity of future radio telescopes will result in requirements for higher dynamic range within the image as well as better resolution and immunity to interference.
Ben-David, Chen, Leshem, Amir
core +3 more sources
Astronomical Site Selection for Turkey Using GIS Techniques [PDF]
Experimental Astronomy, 2015 A site selection of potential observatory locations in Turkey have been carried out by using Multi-Criteria Decision Analysis (MCDA) coupled with Geographical Information Systems (GIS) and satellite imagery which in turn reduced cost and time and ...
Ak, Tansel +14 more
core +9 more sources
Laser frequency comb techniques for precise astronomical spectroscopy [PDF]
Monthly Notices of the Royal Astronomical Society, 2012 Precise astronomical spectroscopic analyses routinely assume that individual pixels in charge-coupled devices (CCDs) have uniform sensitivity to photons.
Andre N. Luiten +37 more
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The Calibration of the 35–40 GHz Solar Radio Spectrometer with the New Moon and a Noise Source
The Astrophysical Journal Supplement Series, 2023 Calibrating solar radio flux has always been a concern in the solar community. Previously, fluxes were calibrated by matching load or the new Moon for relative calibration, and at times with the assistance of other stations’ data. Moreover, the frequency
ZiQian Shang +9 more
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Dispersion Characteristics of the Multi-mode Fiber-fed VIPA Spectrograph
The Astronomical Journal, 2023 A high-resolution ( ${ \mathcal R }\gt {10}^{5}$ ), multi-mode fiber-fed spectrograph on large telescopes with a reasonable size is desirable in astronomy.
Xiaoming Zhu +4 more
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Pulsar and Magnetar Navigation with Fermi/GBM and GECAM
The Astrophysical Journal Supplement Series, 2023 The determination of the absolute and relative position of a spacecraft is critical for its operation, observations, data analysis, scientific studies, as well as deep-space exploration in general.
Xi-Hong Luo +31 more
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The Transformational Power of Frequency Phase Transfer Methods for ngEHT
Galaxies, 2023 (Sub) mm VLBI observations are strongly hindered by limited sensitivity, with the fast tropospheric fluctuations being the dominant culprit. We predict great benefits from applying next-generation frequency phase transfer calibration techniques for the ...
María J. Rioja +2 more
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Using gamma regression for photometric redshifts of survey galaxies [PDF]
, 2015 Machine learning techniques offer a plethora of opportunities in tackling big data within the astronomical community. We present the set of Generalized Linear Models as a fast alternative for determining photometric redshifts of galaxies, a set of tools ...
Cameron, E. +5 more
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The Astrophysical Journal, 2023 The timing follow-up of newly discovered millisecond pulsars (MSPs) is hindered by the larger positional uncertainty (a few tens of arcminutes) associated with the discovery.
Shyam S. Sharma +5 more
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