Astronomy |

AstroLLaVA: towards the unification of astronomical data and natural language

Fri, 11 Apr 2025 00:00:00 +0000

Foundation Models in Astronomy: Why They Matter

Mon, 10 Feb 2025 00:00:00 +0000

Foundation models — large neural networks pre-trained on massive datasets — are starting to transform astronomical data analysis. Models like DINOv2 or CLIP, originally trained on natural images, can be fine-tuned for astronomical tasks with surprisingly good results. At , I presented early comparisons of these models on galaxy morphological classification, and my paper digs into how to best specialize DINOv2 for astronomy.

The key challenge is the domain gap: astronomical images (multi-band, high dynamic range, specific noise) look nothing like everyday photos. Choosing the right fine-tuning strategy turns out to matter a lot — and is the core focus of my current work.

On the multimodal side, I am involved in the collaboration, where I contribute to — a vision-language model for astronomy presented at ICLR 2025.

STAROS Projects

Fri, 01 Sep 2023 00:00:00 +0000

STAROS Projects develops spectroscopy tools and observation campaigns to foster professional–amateur (pro-am) collaborations in astronomy.

As a member of the group, I participate in several instrumentation and spectroscopy-focused initiatives for observational astronomy.

Spectroscopic Database Development

Creation of a dedicated spectroscopic database derived from multiple observing campaigns. This resource supports analysis workflows for stellar, solar, and atmospheric spectra.

Collaborative Observation Campaigns

Organizing multi-month observation campaigns where astronomers contribute spectroscopic data. The alpha Draconis campaign mobilized several astronomers over several months, consolidating more than 10 consecutive days of observations from over 200 spectra.

Alpha Draconis — Orbital Parameters

Results of a STAROS monitoring campaign on the bright eclipsing binary star α Draconis. Over 200 high-resolution spectra were obtained by an international group of amateur astronomers.

OHP Spectro Workshop

Co-organized a with Shelyak Instruments (2025).