Aug
21
2016Hello,
here is the great wall, part of the famous North America Nebula, NGC 7000. Imaged with the Moravian G3-16200 at my 12″ f/4 Newtonian. L:R:G:B:HA:OIII:SII=110:60:60:60: 300:360:270 minutes. Subexposures were 30 minutes for HA OIII SII and 5 minutes for LRGB.
Reinhold
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