Results 201 to 210 of about 3,030,245 (218)

Comparison of shift-and-add and bispectrum image reconstruction methods for astronomy in the near infrared

Journal of the Optical Society of America A, 1996
Using the results of photometry applied to speckle image reconstructions of the triple stellar system LHS1070 in the near infrared, we compare quantitatively the performance of shift-and-add and bispectrum image reconstruction methods and find that comparable results can be obtained.
V. A. Klückers, A. J. Longmore, N. J. Wooder, J. C. Dainty   +3 more
openaire   +1 more source

Near-infrared Instrumentation For Rapid-response Astronomy

2016
Ɣ-ray bursts (GRBs) are the Universe's most luminous transient events. Since the discovery of GRBs was announced in 1973, efforts have been ongoing to obtain data over a broader range of the electromagnetic spectrum at the earliest possible times following the initial detection. The discovery of the theorized ``afterglow'' emission in radio through X-
openaire   +2 more sources

Building the largest mock astrometric catalogue of the Milky Way centre in the near infrared for the end-to-end simulation of the JASMINE satellite

Astronomical Telescopes + Instrumentation
There is currently a strong push towards infrared astronomy, like the ground-breaking JWST and the upcoming ROMAN and Gaia NIR missions. The Japanese JASMINE telescope will be the first Near Infrared (NIR) astro-photometric mission to focus on the ...
Pau Ramos, Daisuke Kawata, Ryou Ohsawa, S. Nishiyama, J. Sanders, L. Smith, N. Koshimoto, D. Minniti, P. Lucas   +8 more
semanticscholar   +1 more source

A discussion on infared astronomy - Near infrared photometry of late-type stars

Philosophical Transactions of the Royal Society of London. Series A, Mathematical and Physical Sciences, 1969
Abstract A multi-band photoelectric photometer for observations in the ultraviolet, blue and visible and the infrared bands W (1.06μm), X (1.13 μm, Y (1.63 μm) and Z (2.21 μm) has been constructed and applied to both stellar and planetary observations. The results of photometry obtained for 61 stars are presented.
openaire   +1 more source

GNOSIS: An OH suppressing near-infrared spectrograph for astronomy using fibre Bragg gratings

2011 Conference on Lasers and Electro-Optics Europe and 12th European Quantum Electronics Conference (CLEO EUROPE/EQEC), 2011
Astronomical near-infrared spectroscopy is made difficult by the extremely bright and variable night sky background. The night sky surface brightness is more than a thousand times brighter at 1.6µm than at 0.4µm. Furthermore the brightness of the sky changes by factors of ∼10% on time-scales of minutes. Background-subtraction is therefore frustrated by
J. S. Lawrence, S.C. Ellis, J. Bland-Hawthorn, J. Bryant, S. Case, L. Gers, R. Haynes, A. Horton, S. Lee, S. Leon-Saval, H. Loehmannsroeben, S. Miziarski, J. Mladenoff, J. O'Byrne, W. Rambold, M. Roth, S. Smedley, C. Trinh   +17 more
openaire   +1 more source

Comparison of shift-and-add & bispectrum image reconstruction methods for astronomy in the near-infrared

Signal Recovery and Synthesis, 1995
It is well known that atmospheric turbulence limits the resolution available to ground based astronomical observations to 0.5-1.0 arcseconds in the infrared. The advent of speckle interferometry in the 1970’s [1] has allowed the recovery of diffraction limited Fourier modulus information of astronomical objects of interest to be attempted routinely.
V.A. Klückers, A.J. Longmore, J.C. Dainty   +2 more
openaire   +1 more source

Toward high spectral resolution transition-edge sensor arrays with highly scalable readouts for visible to near-infrared astronomy

X-Ray, Optical, and Infrared Detectors for Astronomy XII
P. Szypryt, Douglas Bennett, Ian Fogarty Florang, J. W. Fowler, Andrea Giachero, A. Lita, John A. B. Mates, G. O’Neil, D. Swetz, Leaf Swordy, J. Ullom, M. Vissers, J. Wheeler   +12 more
semanticscholar   +1 more source

<title>Cryogenically Cooled Array Spectrometer For Near-Infrared Astronomy</title>

SPIE Proceedings, 1984
C M. Mountain, R G. Bingham, C Sanchez-Magro, M J. Selby   +3 more
openaire   +1 more source

The Impact of Near-Infrared Sky Surveys on Galactic and Extragalactic Astronomy

1998
openaire   +1 more source

Exoatmospheric Astronomy of Visible, Near- and Middle-Infrared Radiation Bands

Radiophysics and Quantum Electronics
openaire   +1 more source