Dark Hours, Done Right: Modeling Sky Darkness and Building With Provenance
astronomy software Aug 09, 2026 6 min read

Dark Hours, Done Right: Modeling Sky Darkness and Building With Provenance

Dark Hours–style night-sky planners turn twilight, moonlight, light pollution, and astro-aware weather into scored “clear dark hour” windows. This guide shows the engineering pieces (geometric-mean scoring, seeing/transparency inputs, horizon glow) and a provenance checklist so AI-generated projects don’t accidentally converge on existing open-source work.

by ahsan
Decker and Lil: Building HyperCard-Style Interactive Documents (Without the Old Constraints)
software development Jul 27, 2026 6 min read

Decker and Lil: Building HyperCard-Style Interactive Documents (Without the Old Constraints)

Decker brings an authoring experience inspired by HyperCard into a modern workflow: cards and widgets you control visually, plus Lil scripting for interactive behavior and data queries. Decks export as standalone self-executing HTML, with a line-oriented text format that stays friendly to version control.

by ahsan