Using an Altair Starwave 60 ED refractor with an 0.8 reducer/flattener and 2" magnetic filter holder with an Altair Ha/OIII 2" dualband filter, using an SV605CC cooled, 14 bit OSC CMOS camera. Data captured with AstroDMx Capture; calibrated and stacked in Siril and post processed in GraXpert, Cosmic Clarity, the Gimp 2.10 and Photoshop CS2. Total integration of 18 x 5 minute exposures of the Dolphin Head nebula.
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The Dolphin head nebula SH2-308
Steve Wainwright and Nicola Mackin
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