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Revitalizing Astronomical Azimuth Determination: Integrating Modern Computing with Traditional Techniques [PDF]

open access: yesSensors
It 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

Astronomical Site Selection for Turkey Using GIS Techniques [PDF]

open access: yesExperimental 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

Parametric high resolution techniques for radio astronomical imaging [PDF]

open access: yesIEEE 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

Laser frequency comb techniques for precise astronomical spectroscopy [PDF]

open access: yesMonthly 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
core   +4 more sources

Some Astronomical Applications of Cross-Correlation Techniques [PDF]

open access: yesThe Astrophysical Journal, 1965
Cross-correlation techniques have been used for many years to increase the signal-to-noise ratio of a wide variety of analogue and digital data. A large literature describing these methods exists, and many clever applications have been developed (see ...
Westphal, J. A.
core   +3 more sources

The Calibration of the 35–40 GHz Solar Radio Spectrometer with the New Moon and a Noise Source

open access: yesThe 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
doaj   +1 more source

Dispersion Characteristics of the Multi-mode Fiber-fed VIPA Spectrograph

open access: yesThe 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
doaj   +1 more source

Pulsar and Magnetar Navigation with Fermi/GBM and GECAM

open access: yesThe 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
doaj   +1 more source

The Transformational Power of Frequency Phase Transfer Methods for ngEHT

open access: yesGalaxies, 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
doaj   +1 more source

The GMRT High Resolution Southern Sky Survey for Pulsars and Transients. V. Localization of Two Millisecond Pulsars

open access: yesThe 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
doaj   +1 more source

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