The integration and verification phase of the GREGOR telescope reached an important milestone with the installation of the interim 1 m SolarLite primary mirror...
Hα kinematics of the Spitzer Infrared Nearby Galaxies Survey - II
This is the second part of an Hα kinematics follow-up survey of the Spitzer Infrared Nearby Galaxies Survey (SINGS) sample. The aim of this paper is to shed new...
Intensity Interferometry using the MAGIC telescopes
The MAGIC telescopes are a stereoscopic system of two 17m mirror diameter Cherenkov telescopes for gamma-ray observations, in operation since many years on the...
LOFAR MSSS: detection of a low-frequency radio transient in 400 h of monitoring of the North Celestial Pole
We present the results of a four-month campaign searching for low-frequency radio transients near the North Celestial Pole with the Low-Frequency Array (LOFAR)...
Optical intensity interferometry observations using the MAGIC Imaging Atmospheric Cherenkov Telescopes
Imaging Atmospheric Cherenkov Telescopes (IACTs) currently in operation feature large mirrors and order of 1 ns time response to signals of a few photo...
P-REx: The Piston Reconstruction Experiment for infrared interferometry
For sensitive infrared interferometry, it is crucial to control the differential piston evolution between the used telescopes. This is classically done by the...
Performance and first measurements of the MAGIC stellar intensity interferometer
In recent years, a new generation of optical intensity interferometers has emerged, leveraging the existing infrastructure of Imaging Atmospheric Cherenkov...
Spiral Inflow Feeding the Nuclear Starburst in M83, Observed in Hα Emission with the GHαFaS Fabry-Perot Interferometer
We present observations of the nearby barred starburst galaxy M83 (NGC 5236), with the new Fabry-Perot interferometer GHαFaS mounted on the 4.2 m William...
SYMPA, a dedicated instrument for Jovian seismology. I. Principle and performance
Aims:The detection and measurement of acoustic modes on the giant planets of the solar system is of great interest for the study of the internal structure and...