Tootfinder

Vaonis Hyperia: smartes Teleskop für Forschung und Astrofotografie
Das Teleskop Vaonis Hyperia wendet sich allein preislich an Institute wie Sternwarten. Es vereint große Optik mit 17 Linsen und schnellen Antrieb.

"Space Advent Calendar"
https://www.theatlantic.com/photography/2025/12/2025-space-telescope-advent-calendar/685096/?g…

2025 Space Telescope Advent Calendar
Welcome to the 18th annual Space Telescope Advent Calendar, featuring remarkable images from NASA’s Hubble Space Telescope and James Webb Space Telescope. Every day until December 25, this page will present a new image of our universe.

Updated at 11:55 a.m. ET on December 6, 2025

The third #AAS247 presser https://www.youtube.com/watch?v=hfDmYXvBbV4 about News from the High-Redshift Universe and Local Analogs dealt with the papers The ALPINE-CRISTAL-JWST Survey: JWST/IFU Optical Observations for 18 Main-sequence Galaxies at z = 4–6 (https://iopscience.iop.org/article/10.3847/1538-4365/ae0928 with https://www.caltech.edu/about/news/young-galaxies-grow-up-fast and https://public.nrao.edu/news/young-galaxies-grow-up-fast/), A New Population of Point-like, Narrow-line Objects Revealed by the James Webb Space Telescope (https://arxiv.org/abs/2509.12177 with https://showme.missouri.edu/2026/scientists-discover-platypus-galaxies-in-the-early-universe/ and https://science.nasa.gov/missions/webb/scientists-identify-astronomys-platypus-with-nasas-webb-telescope/; slide), Supermassive Stars Match the Spectral Signatures of JWST's Little Red Dots (https://arxiv.org/abs/2507.12618 with https://www.cfa.harvard.edu/news/scientists-use-jwst-examine-ancient-monster-stars-may-reveal-birth-black-holes) and Discovery of SiC and Iron Dust around AGB Stars in the Very Metal-poor Sextans a Dwarf Galaxy with JWST: Implications for Dust Production at High Redshift & JWST Captures Growth of Aromatic Hydrocarbon Dust Particles in the Extremely Metal-poor Galaxy Sextans A (https://iopscience.iop.org/article/10.3847/1538-4357/adf06a / https://arxiv.org/abs/2512.04060 with https://science.nasa.gov/missions/webb/nasa-webb-finds-early-universe-analogs-unexpected-talent-for-making-dust/).

Using NASA’s Hubble Space Telescope and ground-based telescopes, astrophysicists have for the first time found firm evidence that a companion is disrupting the atmosphere of Betelgeuse.
Like a boat moving through water, the companion star creates a ripple effect in Betelgeuse’s atmosphere.
Astronomers now see direct signs of this wake, confirming that Betelgeuse really does have a hidden companion shaping its appearance and behavior.

NASA Hubble Helps Detect 'Wake' of Betelgeuse’s Elusive Companion Star

VHE $\gamma$-ray observations of bright BL Lacs with the Large-Sized Telescope prototype (LST-1) of the CTAO
Project, , Abe, Abe, Abhishek, Acero, Aguasca-Cabot, Agudo, Alispach, Ambrosino, Ambrosino, Antonelli, Aramo, Arbet-Engels, Arcaro, Arnesen, Asano, Aubert, Baktash, Balbo, Bamba, Larriva, de Almeida, Barrio, Jim\'enez, Batkovic, Baxter, Gonz\'alez, Bernardini, Bernete, Berti, Bezshyiko, Bigongiari, Bissaldi, Blanch, Bonnoli, Bordas, Borkowski, Brunelli, Bulgarelli, Bunse…

VHE $γ$-ray observations of bright BL Lacs with the Large-Sized Telescope prototype (LST-1) of the CTAO
Cherenkov Telescope Array Observatory (CTAO) is the next-generation ground-based gamma-ray observatory operating in the energy range from 20 GeV up to 300 TeV, with two sites in La Palma (Spain) and Paranal (Chile). It will consist of telescopes of three sizes, covering different parts of the large energy range. We report on the performance of Large-Sized Telescope prototype (LST-1) in the detection and characterization of extragalactic gamma-ray sources, with a focus on the reconstructed gamma…

Thread about gifting (or buying yourself) a telescope and avoiding getting something terrible.
(sorry for Bluesky link but I’m auto-removing posts on Mastodon, this is from last year)
https://bsky.app/profile/thomasfuchs.at/post/3lbx2egm5222k

NY-based Teleskope, which offers smaller LLMs fine-tuned for specific security problems, raised a $25M Series A led by M13, taking its total funding to $32.2M (Leo Schwartz/Fortune)
https://fortune.com/2025/11/03/former-airbnb-engin…

Former Airbnb engineer raises $25 million for AI security platform Teleskope
M13 led the Series A for the New York-based startup with participation from M13 and Lerer Hippeau.

Simulation-based inference via telescoping ratio estimation for trawl processes
Dan Leonte, Rapha\"el Huser, Almut E. D. Veraart
https://arxiv.org/abs/2510.04042 https://…

Simulation-based inference via telescoping ratio estimation for trawl processes
The growing availability of large and complex datasets has increased interest in temporal stochastic processes that can capture stylized facts such as marginal skewness, non-Gaussian tails, long memory, and even non-Markovian dynamics. While such models are often easy to simulate from, parameter estimation remains challenging. Simulation-based inference (SBI) offers a promising way forward, but existing methods typically require large training datasets or complex architectures and frequently yi…

Full #moon with smartphone through a 25€ telescope. 😎

Simultaneously NASA and ESA have published new spacecraft images of #3IATLAS, https://science.nasa.gov/blogs/3iatlas/2025/12/04/nasas-hubble-space-telescope-revisits-interstellar-comet/ from the Hubble Space Telescope on 30 November (just the inner coma with a central condensation) and https://www.esa.int/ESA_Multimedia/Images/2025/12/Comet_3I_ATLAS_shows_activity_in_Juice_navigation_camera_teaser from Juice's NavCam on 2 November with an early sighting of the plasma tail - more contributions to understanding the behavior of the interstellar visitor.