feat(skychart): add SH2, LBN, vdB, HCG, and Abell PNe DSO catalogs#7
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giancarloerra merged 1 commit intomainfrom Mar 15, 2026
Merged
feat(skychart): add SH2, LBN, vdB, HCG, and Abell PNe DSO catalogs#7giancarloerra merged 1 commit intomainfrom
giancarloerra merged 1 commit intomainfrom
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Add five new deep-sky-object catalogs sourced from VizieR/CDS: - SH2 (Sharpless HII regions) — 313 objects - LBN (Lynds Bright Nebulae) — 329 objects - vdB (van den Bergh reflection nebulae) — 158 objects - HCG (Hickson Compact Groups) — 100 objects - Abell PNe (Abell planetary nebulae) — 72 objects Plus additional LDN/B (Lynds Dark + Barnard) entries (186 objects). Changes: - New data file: catalogs_extra.json (1,158 objects), merged at load time - Catalog detection (getDSOCatalogs) and label extraction (getDSOLabel) - UI checkboxes for each new catalog with state persistence - Catalogs without magnitude data (Abell, HCG, LBN, SH2) bypass the magnitude slider and unknown-magnitude toggle automatically - Hint text under the unknown-magnitude checkbox explaining the bypass - README updated with VizieR attribution, new screenshots, tech credits - fetch_catalogs.py script for reproducible catalog fetching from VizieR
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Summary
Adds five new deep-sky-object catalogs to the sky chart, sourced from
VizieR/CDS and bundled in
catalogs_extra.json(1,158 objects total).Changes
Sky Chart (
public/skychart.html)catalogs_extra.jsonalongsidedsos.14.jsongetDSOCatalogs) and label extraction (getDSOLabel)for all five new catalogs
magnitude data (96–100% null) — objects from these catalogs bypass the
magnitude slider and unknown-magnitude toggle automatically
Data
public/data/celestial/catalogs_extra.json— 1,158 extra DSO featuresscripts/fetch_catalogs.py— reproducible VizieR fetch scriptDocumentation (
README.md)