Celestial hemisphere:  Southern  ·  Constellation: Aquarius (Aqr)  ·  Contains:  Helix Nebula  ·  NGC 7293  ·  PK036-57.1
Helix Nebula in LHSO, Robert H. Kutner
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Helix Nebula in LHSO

Helix Nebula in LHSO, Robert H. Kutner
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Helix Nebula in LHSO

Equipment

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Acquisition details

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Description

Blink / Subframe Select, Calibrated (60 Dark, 60 Flat, 100 Bias), Star Aligned all images with PixInsight. Used the Normalized Scale Gradient for Integration.  

For Ha (IDAS dual band was used for Ha), Sii, and Oiii channels:  Cropped, DBE, EZ Denoise  EZ Soft Stretch, StarNet for star removal, and channel combined using PixelMath (ForaxX palette*). 

Ha used for Lum was Cropped, DBE, TGV, MLT, Mask Stretched, HDR, LHT, MMT, Star reduced with MorphTrans, and LRGB combined with the PixelMath RGB image.

Combined image was Curve Transformed and Color Saturation modified to taste with masks, saved as TIFF 16 bit for Photoshop to further adjust saturation and contrast, adjust channel balance, and additional noise reduction. Resampled and Annotated in PI for final image.

*f is (Ha*Oiii)^~(Ha*Oiii)
R = f*Sii + ~f*Ha  
G = f*(.7*Ha + .3*Sii) + ~f*Oiii
B = Oiii

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Helix Nebula in LHSO, Robert H. Kutner

In these public groups

Cloudy Nights