Astrophotography .FITS (2880-Byte Blocks) & PixInsight .XISF Corrupt Subframe & Checksum Surgeon

Deterministic IAU FITS 2880-byte header/data block aligner + 1's-complement 32-bit 'DATASUM'/'CHECKSUM' recalculator + PixInsight 'XISF0100' LZ4/Zlib byte-shuffled 16/32-bit float block salvager engine (.fits, .fit, .fts, .xisf) built for PixInsight, ZWO ASIair, N.I.N.A., Siril — zero-upload ephemeral Wasm RAM execution.

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Cloudflare Ephemeral Wasm RAM · 0% Retention

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