NGC7293 – The Helix Nebula

NGC7293 , the Helix Nebula,  Celestron 9.25 XLT SCT, taken using Nebulosity3, darks subtracted with GCX in Ubuntu, post processing with MaximDL and Nebulosity 3, stacked and more processing with GIMPshop in Ubuntu.  Approximately 10 hours of exposure.