essential
likely
maybe
probably not
Front (prompt)
True-color composite on Landsat TM — band-to-color-gun mapping?
Plain English (default view) — short, conversational, lightly seasoned with science
🔬 Scientific / formula (revealed on click) — markdown + $$…$$ ok
**Band Combination 3-2-1** on Landsat TM: - 🟥 R display gun ← **Band 3 (Red)** - 🟩 G display gun ← **Band 2 (Green)** - 🟦 B display gun ← **Band 1 (Blue)** Each band feeds the matching color gun → image looks roughly natural. ⚠️ On Landsat 8/9 **OLI** (numbering shifted by 1 because coastal/aerosol = Band 1): - 🟥 R ← **Band 4 (Red)** - 🟩 G ← **Band 3 (Green)** - 🟦 B ← **Band 2 (Blue)**
💡 Mnemonic / memory aid (shown on hover)
True color = 3-2-1 countdown (on TM). Each band matches its real color. OLI just shifts everything up by 1.
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