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Heart Nebula, SHO

The Heart Nebula in SHO. 3 hours and 29 minutes of Hydrogen-α, Oxygen III and Sulfur II using 5nm and 3nm Astrodon filters and a monochromatic CMOS camera sensor.

Processing Details

PixInsight

Star allignment of the linear H, OIII and SII data with StarAllignment, Hydrogen-α frame as a reference.

Frames were cropped with DynamicCrop using the same process.

The background noise of the frames was reduced with Automatic Background Extraction.

The Pixel Math formula:

• R: SII * .6 + Ha * .4

• G: Ha * .6 + OIII * .1

• B: OIII * 1

Auto-stretch of the SHO integration with the Screen Transfer Function (STF) and Curves Transformations.

Blue reduction 0.40 with SCNR.

Noise Reduction with ACDNR.

Histogram Transformation optimisations.

Photoshop

Selective Sharpening with High Pass Filter.

Tech Card