Untitled Document

The Helix Nebula

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Atik 383L+ Mono Camera Atik EFW2/OAG 
Baader Ha,OIII filters Losmandy G11

Ha=6x20min OIII=11x20min 
Total = 5hrs 40min  
Sub-exposures registered, calibrated and stacked in DeepSkyStacker Final processing in PS3: Levels/curves stretching, reduce noise filter, smartsharpen filter, high pass filter, selective color adjustments Bi-color RGB image using Steve Canistra's narrowband bi-color technique