OSIRIS, the main optical (360-1000nm) 1st-generation instrument for GTC, is being integrated. Except for some grisms and filters, all main optical components...
Experimental validation of Lyot stop apodization in ground-based coronagraphy
We show that the use of apodizing functions at the coronagraph Lyot plane may be useful for improving the image contrast of ground-based coronagraphs. An...
Exploitation of CanariCam: Opening new windows for spanish astrophysics
CanariCam is the Day One mid-infrared imager for the Spanish 10 m Gran Telescopio Canarias (GTC). With its multimode options that allow spectroscopy...
Fast infrared winds during the radio-loud and X-ray obscured stages of the black hole transient GRS 1915+105
The black hole transient GRS 1915+105 entered a new phase of activity in 2018, generally characterised by low X-ray and radio fluxes. This phase has only been...
First fringes with an integrated-optics beam combiner at 10 μm. A new step towards instrument miniaturization for mid-infrared interferometry
Context. Observations of milliarcsecond-resolution scales and high dynamic range hold a central place in the exploration of distant planetary systems in order...
First Observation of the Submillimeter Polarization Spectrum in a Translucent Molecular Cloud
Polarized emission from aligned dust is a crucial tool for studies of magnetism in the ISM, but a troublesome contaminant for studies of cosmic microwave...
First performance of the GeMS + GMOS system - 1. Imaging
During the commissioning of the Gemini MCAO System (GeMS), we had the opportunity to obtain data with the Gemini Multi-Object Spectrograph (GMOS), the most...
First Results from the Hertzsprung SONG Telescope: Asteroseismology of the G5 Subgiant Star μ Herculis
We report the first asteroseismic results obtained with the Hertzsprung Stellar Observations Network Group Telescope from an extensive high-precision radial...
First results from the Very Small Array - I. Observational methods
The Very Small Array (VSA) is a synthesis telescope designed to image faint structures in the cosmic microwave background on degree and sub-degree angular...