diff --git a/StarryNights/did.js b/StarryNights/did.js
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+// On February 24 in 2009
+// Saturn and Moons
+// In this image, four moons of Saturn are passing in front of the giant planet.
+// The large, orange moon Titan casts a large shadow on the northern pole. Smaller moons Mimas, Dione and Enceladus appear as white dots.
+
+s0.initImage("file:///home/pln/Work/Hydra/StarryNights/img/february-24-2019-saturn-and-moons.jpg")
+// Source celeste: Saturne
+src(s0)
+  .scale(() => 1 + 0.025 * Math.sin(time / 2.413))
+  .scale(() => 1.15 + 0.25 * Math.sin(time / 24.0257))
+  .contrast(1.32).brightness(-0.1)
+  .out(o0)
+// Oeuvre au noir: soustraction en rotation
+src(o0)
+  .sub(src(o2).rotate(() => time/199.3 % 360).scale([0.999,1.001]))
+  .out(o1)
+// Oeuvre au blanc: filtre lumineux
+src(o0)
+  .add(src(o1)
+    .rotate(() => -(time/57.0224) % 220)
+    .luma(() => 0.5 + 0.8 * Math.sin(time/19.93))
+    .mask(voronoi(12,0.2))
+    .scale(0.25))
+  .out(o2)
+//Oeuvre au jaune: Masque geometrique
+src(o1)
+  .blend(o2,() => 0.8 + 0.4 * Math.sin(time))
+  .blend(src(o1),() => 0.8 + 0.6 * Math.sin(time/(1312)))
+  // Oeuvre au rouge: Etoiles solaires
+  .add(noise(93,0.01)
+    .scroll(() => time/195.7)
+    .mask(shape(30).scale(1.93).invert())
+    .thresh(0.93))
+  .out(o3)
+
+render(o3)
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diff --git a/StarryNights/img/february-24-2019-saturn-and-moons.jpg b/StarryNights/img/february-24-2019-saturn-and-moons.jpg
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