The 3-D topology of magnetic fields in and around sunspots
The most prominent features on the surface of the solar disc are the sunspots, which have been studied since their detection in the 17th century. Despite this...
The 3D structure of the penumbra at high resolution from the bottom of the photosphere to the middle chromosphere
Sunspots are the most prominent feature of the solar magnetism in the photosphere. Although they have been widely investigated in the past, their structure...
The 4 m New Robotic Telescope Project: An Updated Report
The New Robotic Telescope (NRT) is an international collaboration to build and operate a 4m diameter fully robotic telescope. The telescope will take advantage...
The 4-m New Robotic Telescope (NRT): status of the optomechanical systems
The New Robotic Telescope (NRT) is currently under conceptual phase design, will be sited on the Observatory of Roque de los Muchachos (ORM) in La Palma (Canary...
The 4MOST–Gaia Purely Astrometric Quasar Survey (4G-PAQS)
The 4MOST–Gaia Purely Astrometric Quasar Survey (4G-PAQS) will carry out the first large-scale, colour-independent quasar survey selected solely on the basis of...
The 99942 Apophis observational campaign at the Canary Islands observatories during its 2021 close approach: preliminary results
Potentially hazardous asteroid (PHA) 99942 Apophis, with a diameter 380-393 m (Licandro et al. 2016), came to its 2021 close approach on March 6, 2021, at 01:06...
The Absolute Proper Motion of the Small Magellanic Cloud a Progress Report
We present a progress report on a project aimed at determining the absolute proper motion of the Small Magellanic Cloud (SMC), with respect to background Quasi...