Results 91 to 100 of about 57,270 (311)

Multi-use lunar telescopes [PDF]

, 1991
The objective of multi-use telescopes is to reduce the initial and operational costs of space telescopes to the point where a fair number of telescopes, a dozen or so, would be affordable.
Trueblood, Mark, Hine, Butler, Talent, David, Genet, Russell, Boyd, Louis, Genet, David, Filippenko, Alexei V., Drummond, Mark   +7 more
core  

The Bochum Survey of the Southern Galactic Disk: IV. Multi‐Band Photometry

Astronomische Nachrichten, EarlyView.
ABSTRACT The Southern Galactic Disk Survey (GDS) monitored a mosaic of 268 fields along a 6°‐wide stripe in the southern galactic disk from September 2010 to September 2019. These fields were observed between 21 and 407 times sim r′$$ {r}^{\prime } $$ultaneously in (8mag≲r′≲18mag$$ 8\kern0.6em \mathrm{mag}\lesssim {r}^{\prime}\lesssim 18\kern0.6em ...
Julia Blex, Dominik J. Bomans, Kerstin Weis, Markus Demleitner, Moritz Hackstein, Anna Franckowiak, Michael Ramolla, Christian Westhues, Christofer Fein, Rolf Chini   +9 more
wiley   +1 more source

The first NenuFAR pulsar catalogue

Astronomy & Astrophysics
Context. The radio frequency range below 100 MHz has been unexplored until recently for extended pulsar population studies. We present the first low-frequency pulsar census of the northern sky with the NenuFAR radio telescope (10–85 MHz), performed ...
Bondonneau L., Grießmeier J.-M., Theureau G., Cognard I., Jankowski F., Kondratiev V., Kravtsov I., Pétri J., Possenti A., Ulyanov O., Zakharenko V., Brionne M., Cecconi B., Corbel S., Girard J. N., Konovalenko O., Tokarsky P., Zarka P.   +17 more
doaj   +1 more source

The prototype Schwarzschild Couder Telescope: A Medium-Sized Telescope for the Cherenkov Telescope Array

EPJ Web of Conferences, 2023
The Schwarzschild-Couder Telescope (SCT) is a dual-mirror telescope designed for the Cherenkov Telescope Array Observatory (CTAO) to observe very-high-energy gamma rays (20 GeV to 300 TeV). It features a dualmirror system and a high-resolution camera with an 8° field of view (FoV) for enhanced angular resolution and background rejection.
openaire   +2 more sources

Gamma-Ray Telescopes: 400 Years of Astronomical Telescopes [PDF]

, 2010
The last half-century has seen dramatic developments in gamma-ray telescopes, from their initial conception and development through to their blossoming into full maturity as a potent research tool in astronomy.
Gehrels, Neil, Cannizzo, John K.
core  

Large aperture Fresnel telescopes/011 [PDF]

, 1998
At Livermore we`ve spent the last two years examining an alternative approach towards very large aperture (VLA) telescopes, one based upon transmissive Fresnel lenses rather than on mirrors.
Hyde, R.A., LLNL
core   +1 more source

EBHIS Local Volume Galaxy Hi Survey (LVGHIS)

Astronomische Nachrichten, EarlyView.
ABSTRACT Here, we present the “Local Volume Galaxy Hi Survey” (LVGHIS). It is based on the first data release of the Milky Way portion of the Effelsberg Bonn Hi‐Survey (EBHIS). We homogeneously measured the mass and dynamics of the local volume galaxies within the radial velocity limit of |vLSR|≤600kms−1$$ \mid {v}_{\mathrm{LSR}}\mid \le 600\kern0.6em \
V. A. Schulz, J. Kerp, A. C. Schröder, B. Winkel   +3 more
wiley   +1 more source

High-Precision UBVRI Photometry with a New 50 Cm Telescope at Stará Lesná

Open Astronomy, 2003
The paper presents the experience, observations and results obtained with the new 50 cm photometric telescope at the Stará Lesná Observatory equipped with an SBIG ST10MXE CCD camera.
Pribulla T., Chochol D.
doaj   +1 more source

Case Study of a Fly's Eye Homogenizer for the Calibration Illumination of Integral Field Units

Astronomische Nachrichten, EarlyView.
ABSTRACT Integral‐field unit spectrographs require a homogeneous calibration illumination of the field of view for proper flat and wavelength calibration (e.g., BlueMUSE which is currently under development for the VLT). This article presents the adaptation of a fly's eye homogenizer, frequently used in laser applications, to this task in astronomical ...
Daniel P. Sablowski, Carlos E. Rodriguez Alvarez, Dennis Plueschke, Andreas Kelz, Svend M. Bauer   +4 more
wiley   +1 more source

The medium size telescopes of the Cherenkov telescope array [PDF]

AIP Conference Proceedings, 2017
The Cherenkov Telescope Array (CTA) is the planned next-generation instrument for ground-based gamma-ray astronomy, covering a photon energy range of ~20 GeV to above 100 TeV. CTA will consist of the order of 100 telescopes of three sizes, installed at two sites in the Northern and Southern Hemisphere.
openaire   +2 more sources