M42 - Grande Nébuleuse d'Orion - Orion
RVB: 67*300s + 715*40s - 400ISO
Ha 12nm: 21*600s - 800ISO
Tot Exp: 18h35min
Set-up:
TS 70/420mm
Canon 1000D défiltré partiel
HEQ5
Traitement:
Siril
Photoshop CS6
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Taken on March 30, 2018