Show HN: AstroLens – AI that watches the sky and finds what nobody catalogued

**Show HN: AstroLens – AI that watches the sky and finds what nobody catalogued**

# Show HN: AstroLens -- AI that watches the sky and finds what nobody catalogued*https://github.com/samantaba/astroLens** (MIT licensed, Python)AstroLens is an open-source tool that downloads images from sky surveys (SDSS, ZTF, DECaLS, Pan-STARRS, Hubble, and others), runs them through a Vision Transformer + out-of-distribution ensemble + YOLOv8 pipeline, computes galaxy morphology, and cross-references everything against SIMBAD/NED/VizieR. It's designed to run autonomously for days.*Results from a 3-day validation run* (zero human intervention):published results in https://www.linkedin.com/pulse/astrolens-v110-teaching-ai-wa...- 20,997 images from 7 sources analyzed - 3,458 anomaly candidates across 354 sky regions - Independently recovered SN 2014J (Type Ia supernova in M82), NGC 3690 (galaxy merger), and SDSS J0252+0039 (gravitational lens) - YOLO transient detection went from 51.5% to 99.5% mAP50 by training on data collected during the run itself - 140 self-correction cycles, zero errors*What makes it interesting*: The pipeline is self-correcting — it adjusts OOD thresholds, rebalances survey sources based on anomaly yield, recalibrates its reference distributions, and handles errors autonomously. It's not a batch job; it's a continuous system that gets better as it runs.*Honest limitations*: It found known objects, not new discoveries — this validates the pipeline but the real test is pointing it at less-explored regions. OOD detection on astronomical images is inherently noisy (the boundary between "unusual galaxy" and "imaging artifact" is fuzzy). The self-correcting system helps, but false positives remain a challenge.Runs on a laptop (CPU/MPS/CUDA)...

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