diff --git a/StarryNights/Ariane13.js b/StarryNights/Ariane13.js
new file mode 100644
index 0000000..6ca9a51
--- /dev/null
+++ b/StarryNights/Ariane13.js
@@ -0,0 +1,39 @@
+// Ariane13 par PLN
+// À partir d'une photo prise le 13 avril 2019 par le téléscope Hubble de Abell 2261, une galaxie géante 10 fois plus grande que notre Voie Lactée.
+// https://nech.pl/ariane13
+s0.initImage("file:///home/pln/Work/Hydra/StarryNights/img/april-13-2019-galaxy-cluster-abell-2261.jpg")
+src(s0)
+.brightness(0.13).contrast(1.72)
+.out(o0)
+
+periodeGravite = 13
+periodeRotation = 13 * 04
+periodeTelescope = 13 * 04 * 92
+periodeTrousNoirs = 13 * 13 * 13 * 13
+
+// DEBUG
+// periodeGravite = 10
+// periodeTrousNoirs = 20
+// periodeRotation = 13
+// periodeTelescope = 2
+
+
+src(o0)
+.blend(o0)
+.blend(src(o1).scale(0.5,0.9)
+  .contrast(1.05)
+  .rotate(() => -time/periodeRotation % 360)
+  , 0.35)
+.out(o2)
+
+src(o2)
+  .modulate(o0,() => Math.sin(time/periodeGravite)/10)
+  .out(o1)
+
+src(o1)
+  .blend(o0, () => 0.25 + Math.sin(time / periodeTrousNoirs) * 1.5)
+  .blend(src(o1).add(noise(100,0.1).thresh(0.9 + 0.05 * Math.sin(time))).scale(0.9), 0.32)
+  .scale(() => 1.5 + Math.sin(time/periodeTelescope) * 0.6)
+.out(o3)
+
+render(o3)
diff --git a/StarryNights/DustyHalley.js b/StarryNights/DustyHalley.js
index 4927168..9d7415d 100644
--- a/StarryNights/DustyHalley.js
+++ b/StarryNights/DustyHalley.js
@@ -12,6 +12,6 @@ src(o2)
   .blend(src(o2).thresh(), () => 0.5 + 0.125 * Math.sin(time / 100 % 180))
   .scrollX(-0.05)
   // .scrollY(-0.1)
-  .scale(1.18)
+  .scale(1.08)
 .out(o3)
-render()
+render(o3)
diff --git a/StarryNights/GaLactic.js b/StarryNights/GaLactic.js
index 07bf40a..36c9a86 100644
--- a/StarryNights/GaLactic.js
+++ b/StarryNights/GaLactic.js
@@ -16,7 +16,7 @@ src(o1)
   .blend(o0)
   .blend(o1,0.3)
   .brightness(0.15).contrast(1.4)
-  .scale(() => 1.5 + Math.sin(time/50) * 0.6)
+  .scale(() => 1.5 + Math.sin(time/70) * 0.6)
 .out(o3)
 
-render()
+render(o3)
diff --git a/StarryNights/img/april-13-2019-galaxy-cluster-abell-2261.jpg b/StarryNights/img/april-13-2019-galaxy-cluster-abell-2261.jpg
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diff --git a/StarryNights/img/december-13-2019-comet-wirtanen.png b/StarryNights/img/december-13-2019-comet-wirtanen.png
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index 0000000..47885d8
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diff --git a/StarryNights/img/info.md b/StarryNights/img/info.md
new file mode 100644
index 0000000..e69de29
--- /dev/null
+++ b/StarryNights/img/info.md
diff --git a/StarryNights/img/september-13-2019-arches-cluster.jpg b/StarryNights/img/september-13-2019-arches-cluster.jpg
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index 0000000..7aa2f06
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