The Crescent Nebula and the Soap Bubble Nebula – by André van der Hoeven, Kees Scherer, Sara Wager and Dominque Dierick
BiColor Hydrogen-alpha and Oxygen III composite of 57 hours of total integration time acquired with 4 different setups:
André: TMB92/QSI583ws
Sara: Orion Optics ODK10/TMB152/QSI683wsg
Kees: Skywatcher Esprit 100/QHY16200
Dominique: Takahashi FSQ106/QHY163M