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NGC1491 is an emission nebula in Perseus that has strong Hα and OIII components.  This image incorporates OSC star color with the bi-color narrowband data. 

Acquisition Details

Hα = 37x10min
OIII =  89x10min
OSC = 60x5min

Total = 26hrs

Captured with Sequence Generator Pro.  Processed with Pixinsight.


Hα=8x20min OIII=9x20min

False RGB color image from narrowband filters. R=Hα+24%SII  G=OIII  B=OIII+15%Hα