Hello everyone, I am sharing my image of the Heart and Soul Nebula, emission nebulae located in the constellation Cassiopeia. This is a two panel mosaic processed in SHO. Hope you enjoy!

Acquisition details:
Top panel:
Ha: 45 x 180s (2 h 15 min)
Oiii: 105 x 180s (5 h 15 min)
Sii: 65 x 180s (3 h 15 min)

Bottom panel:
Ha: 50 x 180s (2 h 30 min)
Oiii: 109 x 180s (5 h 27 min)
Sii: 69 x 180s (3 h 27 min)

Total integration time: 22 h 9 min

Equipment:
Main scope: William Optics Redcat51
Main camera: ZWO ASI1600MM Pro
Guide scope: Svbony SV165 30mm f/4
Guide camera: ZWO ASI120MM Mini
Mount: Juwei 14
Filters: Svbony SV227 5nm Ha, Oii and Sii
Control: ZWO ASIAIR Plus

Processing: Pixinsight, GraXpert, StarNet

For each mono stack, WBPP -> GraXpert background extraction -> DNA Linear Fit Then, MosaicByCoordinates -> TrimMosaicTile -> GradientMergeMosaic. Then, GraXpert noise reduction -> StarNet -> LRGBCombination -> NarrowbandNormalization -> CurvesTransformation.

For the stars, I did a SHO combination -> StarReduction -> Invert -> SCNR -> Invert.

Finally, the stars and starless image are combined using PixelMath.

by AdamWongwr

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