On the application of optical-fiber image scramblers to astronomical spectroscopy
, 1986 Single, step-index optical fibers, when properly employed, can function as optically efficient image scramblers. Their use as optical feeds for astronomical slit spectrographs can reduce zonal error levels in those instruments by orders of magnitude.
W. D. Heacox
semanticscholar +1 more source
Far-red spectroscopy of peculiar stars and the GAIA mission [PDF]
arXiv, 2002 The coming GAIA Cornerstone mission by ESA will provide micro-arcsec astrometry, 10 bands photometry and far-red spectroscopy for a huge number of stars in the Galaxy (10^9). GAIA spectroscopy will cover the range 8480--8740 Ang, which includes the CaII triplet and the head of the Paschen series.
arxiv
High Resolution Interference Spectroscopy Applied to Astronomical Investigations (2000 to 3000 Å) [PDF]
, 1971 B. Bates
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The Development of a Segmented N-Type Germanium Detector, and Its Application to Astronomical Gamma-Ray Spectroscopy [PDF]
, 1984 N. Gehrels +7 more
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Weighted Stacking of Radio Images Affected by Noise and Interfering Signals
The Astrophysical Journal Supplement SeriesWe implement an algorithm based on the weighted stacking of astronomical images that can combine different observations of the same region of the sky removing the interfering signals.
Giulia Murgia, Sofia Fatigoni
doaj +1 more source
Current and future capabilities of the 74-inch telescope of Kottamia astronomical observatory in Egypt [PDF]
NRIAG Journal of Astronomy and Astrophysics, Special Issue, PP.
271-285, (2008) - Egypt, 2014 In this paper, we are going to introduce the Kottamia Astronomical Observatory, KAO, to the astronomical community. The current status of the telescope together with the available instrumentations is described. An upgrade stage including a new optical system and a computer controlling of both the telescope and dome are achieved. The specifications of a
arxiv
Single-epoch and Differential Astrometric Microlensing of Quasars
The Astrophysical JournalWe propose and discuss a new experimental approach to measure the centroid shift induced by gravitational microlensing in the images of lensed quasars (astrometric microlensing).
R. Forés-Toribio +5 more
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DOPPLER AND SUB-DOPPLER MILLIMETER AND SUB-MILLIMETER WAVE SPECTROSCOPY OF KEY ASTRONOMICAL MOLECULES: HNC AND CS [PDF]
, 2015 Sven Thorwirth +4 more
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Stellar synthetic spectroscopy in the Virtual Observatory era [PDF]
Astronomical Spectroscopy and Virtual Observatory, Proceedings of
the EURO-VO Workshop, Eds.: M. Guainazzi and P. Osuna, Published by the
European Space Agency., 2008, p.169, 2010 Arguments for including in the VO large grids of synthetic spectra fully covering the HR diagram are presented. One obvious need is that of population synthesis at all redshifts. Theoretical spectra have also the power to predict peculiar behaviors, that could remain unnoticed in observed spectra, or lead to erroneous conclusions.
arxiv
Real-time Collision-free Motion Planning for Next-generation Fiber Positioners in LAMOST
The Astronomical JournalMultiobject fiber-fed spectrographs have thousands of fiber positioners packed on a focal plane with shared working space to move the fiber-ends in parallel, which maximizes observation time.
Guifeng Chen +4 more
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