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NGC 6357 (Sco)
Technical data: 4"-Pentax SDUF II ST10XME and CFW8 filter set RGB (R=6x180s; G=6x180s; B=6x180s; RGB bin1). The channels were combined 1,2:0,9:1,4 per software Authors: Volker Wendel and Bernd Flach-Wilken
Technical data: 4"-Pentax SDUF II ST10XME with Custum Scientific 3nm-H-alpha filter 3x20 minutes exposure time Authors: Volker Wendel and Bernd Flach-Wilken
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