Sh2-12 in _HaRGB

 

 

Sharpless 2-12 is a very large nebula. It's full extent sprawls over a vast region and it is therefore best imaged with either a smaller focal length or a camera with a bigger sensor or both

 

Still this view does reveal some interesting structures. Like many Sharpless objects it doesn't seem to be imaged that often

 

 

Total integration :

 

Three and a half hours in Ha (10 minute subs)

 

2 hours and 20 minutes in RGB with a OSC

5 minute subs x 24 + one minute subs x 60)

 

 

Equipment

 

Sharpstar Z4

HEQ5

ZWO ASI 533 MM pro

ZWO ASI 533 MC pro

Antlia 3 nm H alpha Filter

ASIAR

 

Software

 

ASIAIR

AstropixelProcessor

PixinSight

Photoshop CS6

 

 

Processing notes-

Ha and RGBI data processed independently

 

Stack in AstroPixelProcessor

 

Graxpert for Gradient Correction in Ha

In this instance I removed light pollution and neutralised background in the RGB stack using AstroPixelProcessor before Gradient Correction in PixInsight. This seemed to provide better results than GC /ADBE or Graxpert in PI by themselves

 

BlurX (Correct Only)

BlurX non stellar

Starnet++

 

Nebula

 

 

Noise X

GHS

CurvesTransformation

 

Stars

 

Setiastro StarStretch script

 

Stars combined with

PixelMath

 

HaRGB

 

 

Ha and RGB combined using the Marco Lorenzi technique as suggested by Andy Campbell

 

 

 

Done