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- Named to pay tribute to the Greek goddess of nature, life, and hunt Artemis.

- In the SPECULOOS network, which consists of four telescopes which are scanning the sky in the southern hemisphere from the Paranal Observtory (Chile) and which are named after the four Galilean moons of Jupiter: IO, EUROPA, GANYMEDE and CALLISTO. The SPECULOOS project also has another 1m telescope (SAINT-EX) sited in Mexico, and two 60 cm prototypes called TRAPPIST,  sited respectively in Chile and Morocco.

- ARTEMIS is a 1m diameter telescope in a building 4m high. It was built by the German company ASTELCO. Its detectors are very sensitive to the infrared wavelengths which are emitted by ultra-cool stars.


With a new telescope situated on a scenic plateau at the Instituto de Astrofísica de Canarias (IAC) in Tenerife, Spain, planetary scientists now have an added way to search for Earth-sized exoplanets. Artemis, the first ground-based telescope of the SPECULOOS Northern Observatory (SNO), joins a network of 1-meter-class robotic telescopes as part of the SPECULOOS project (Search for habitable Planets EClipsing ULtra-cOOl Stars), which is led by Michael Gillon at the University of Liège in Belgium and carried out in collaboration with MIT’s Department of Earth, Atmospheric and Planetary Sciences (EAPS) and several other institutions and financial supporters.


The other network telescopes that make up the SPECULOOS Southern Observatory — named Io, Europa, Ganymede, and Callisto after the four Galilean moons of Jupiter — are up and running at the Paranal Observatory in Chile, busily scanning the skies for exoplanets in the Southern Hemisphere. Together, these SPECULOOS telescopes will look for terrestrial planets circling very faint, nearby stars, called ultra-cool dwarfs, and the new Artemis telescope will allow the research group to expand the search into the Northern Hemisphere skies.


Artemis was funded by the generous support of MIT donors Peter A. Gilman, the Heising-Simons Foundation, and Colin and Leslie Masson, with additional support from the Ministry of Higher Education of the Federation Wallonie-Bruxelles, and the Balzan Foundation.


Video credits: Daniel Lòpez, editor, producer, time lapse photography; drone photography courtesy ASTELCO, tau-tec GmbH/Michael Ruder; additional material courtesy NASA/JPL, ESO

Publications which made use of the data gathered by the Artemis telescope of the SPECULOOS Northern Observatory

Link to ADS Library

Rommel, Braga-Ribas, Ortiz et al. 2023 A large topographic feature on the surface of the trans-Neptunian object (307261) 2002 MS_4 measured from stellar occultations. arXiv e-prints arXiv:2308.08062.


Brož, Ďurech, Ferrais et al. 2023 2021 occultations and transits of Linus orbiting (22) Kalliope. I. Polygonal and cliptracing algorithms. Astronomy and Astrophysics 676, A60.


Gan, Cadieux, Jahandar et al. 2023 A massive hot Jupiter orbiting a metal-rich early-M star discovered in the TESS full frame images. arXiv e-prints arXiv:2307.07329.


Hartman, Bakos, Csubry et al. 2023 TOI 4201 b and TOI 5344 b: Discovery of Two Transiting Giant Planets Around M Dwarf Stars and Revised Parameters for Three Others. arXiv e-prints arXiv:2307.06809.


Ghachoui, Soubkiou, Wells et al. 2023 TESS discovery of a super-Earth orbiting the M dwarf star TOI-1680. arXiv e-prints arXiv:2307.05368.


Barkaoui, Timmermans, Soubkiou et al. 2023 TOI-2084 b and TOI-4184 b: two new sub-Neptunes around M dwarf stars. arXiv e-prints arXiv:2306.15095.

Burdanov, Hasler, and de Wit 2023, "GPU-based framework for detecting small Solar system bodies in targeted exoplanet surveys", Monthly Notices of the Royal Astronomical Society 521, 4568-4578.
Pozuelos, Timmermans, Rackham et al. 2023, "
A super-Earth and a mini-Neptune near the 2:1 MMR straddling the radius valley around the nearby mid-M dwarf TOI-2096", Astronomy and Astrophysics 672, A70.
Morgado, Sicardy, Braga-Ribas et al. 2023, "A dense ring of the trans-Neptunian object Quaoar outside its Roche limit", Nature 614, 239-243.

Burdanov, de Wit, Gillon et al. 2022, "SPECULOOS Northern Observatory: Searching for Red Worlds in the Northern Skies", Publications of the Astronomical Society of the Pacific 134, 105001.
Fernández-Valenzuela, Ortiz, Morales et al. 2022, "Hi'iaka's physical and dynamical properties using long-term photometric data", European Planetary Science Congress EPSC2022-406.
Gan, Soubkiou, Wang et al. 2022, "TESS discovery of a sub-Neptune orbiting a mid-M dwarf TOI-2136", Monthly Notices of the Royal Astronomical Society 514, 4120-4139.
Burdanov and de Wit 2022, "Small body harvest from SPECULOOS: GPU-accelerated search for asteroids and comets in our Solar System using photometric data from the SPECULOOS exoplanet search.", Bulletin of the American Astronomical Society 54, 102.341.

Schanche, Pozuelos, Günther et al. 2022, "TOI-2257 b: A highly eccentric long-period sub-Neptune transiting a nearby M dwarf", Astronomy and Astrophysics 657, A45.
Fernández-Valenzuela, Ortiz Moreno, Holler et al. 2021, "Physical properties of Hi'iaka from stellar occultation data", AAS/Division for Planetary Sciences Meeting Abstracts 53, 503.05.
Devogele, Ferrais, Jehin et al. 2021, "Physical characterization of the active asteroid (6478) Gault from a multi-apparition campaign (2018-2020)", AAS/Division for Planetary Sciences Meeting Abstracts 53, 309.04.
Wells, Rackham, Schanche et al. 2021, "A large sub-Neptune transiting the thick-disk M4 V TOI-2406", Astronomy and Astrophysics 653, A97.
Devogèle, Ferrais, Jehin et al. 2021, "(6478) Gault: physical characterization of an active main-belt asteroid", Monthly Notices of the Royal Astronomical Society 505, 245-258.
Sebastian, Pedersen, Murray et al. 2020, "Development of the SPECULOOS exoplanet search project", Ground-based and Airborne Telescopes VIII 11445, 1144521.
Niraula, Wit, Rackham et al. 2020, "π Earth: A 3.14 day Earth-sized Planet from K2's Kitchen Served Warm by the SPECULOOS Team", The Astronomical Journal 160, 172.
Demory, Pozuelos, Gómez Maqueo Chew et al. 2020, "A super-Earth and a sub-Neptune orbiting the bright, quiet M3 dwarf TOI-1266", Astronomy and Astrophysics 642, A49.
Delrez, Gillon, Queloz et al. 2018, "SPECULOOS: a network of robotic telescopes to hunt for terrestrial planets around the nearest ultracool dwarfs",
Ground-based and Airborne Telescopes VII 10700, 10700

Related Papers:

de Wit, J., Wakeford H., Gillon, M., Lewis N., Valenti, J., et al. (2016), Nature, 537, 69, Press Release 

“A combined transmission spectrum of the Earth-sized exoplanets TRAPPIST-1 b and c”

Gillon, M., Jehin, E., Lederer, S., Delrez, L., de Wit, J., et al. (2016),  Nature, 533, 221. Press Release

“Temperate Earth-sized planets transiting a nearby ultracool dwarf star”

Gillon, M., Triaud, A., Demory, B.-O., …, de Wit, J., et al.  (2017),  Nature, 542, 456. Press Release

“Seven temperate terrestrial planets around the nearby ultracool dwarf star TRAPPIST-1”

de Wit, J., Wakeford H., Lewis N., et al. (2018), Nature Astronomy, 2, 214. Press Release

“Atmospheric Reconnaissance of TRAPPIST-1’s Habitable-zone Earth-sized Exoplanets”

Delrez, L., Gillon, M., Queloz, D., Demory, B.-O., Almleaky, Y., de Wit, J., et al. (2018), Proceedings of SPIE

“SPECULOOS: a network of robotic telescopes to hunt for terrestrial planets around the nearest ultracool dwarfs”

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