IC 1805 Heart Nebula in Hubble Palette (JohnAdastra)

Celestial hemisphere: Northern · Constellation: Cassiopeia (Cas) · Contains: IC 1795 · IC 1805 · LBN 645 · LBN 646 · LBN 647 · LBN 648 · LBN 650 · LBN 654 · LBN 655 · LBN 656 · LBN 657 · LDN 1359 · LDN 1360 · LDN 1361 · LDN 1362 · LDN 1363 · LDN 1364 · LDN 1365 · LDN 1366 · LDN 1367 · LDN 1368 · LDN 1369 · LDN 1370 · LDN 1371 · LDN 1372 · LDN 1373 · NGC 896 · Sh2-190

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IC 1805 Heart Nebula in Hubble Palette

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IC 1805 Heart Nebula in Hubble Palette

IC 1805 Heart Nebula and Melotte 15 - Processed with SHO Hubble Palette

Another attempt on this object was made in 2021 with the ASI2600MM-P mono camera obtained in the middle of the year. Each narrowband filter produced strong signal despite local light pollution and a fullish moon in some cases. The final image stood up well to zoom in on Melotte 15, the Heart of the Heart; that image is shown on another page of my gallery:

Melotte 15 - The Heart of the Heart ( JohnAdastra ) - AstroBin

Processing was performed in PixInsight, and before combining, each channel was first denoised with MureDenoise, to obtain a smoothed background. The color and contrast adjustments were done after obtaining a starless image using the StarXTerminator script. A luminance layer with stars was then produced from Ha master light frame, where Deconvolution, star reduction with MorphologicalTransformation, and sharpening with UnsharpMark were disposed. Further refinements were also done with LocalHistogramEqualization, and a minor application of DarkStructureEnhance.

Subframes were collected over the nights of 17 and 19 Novemeber, and 13, 20 and 23 December 2021.

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Status	Advanced success
Started	...
Astrometry.net job	5448211
PixInsight job	RBRHB91NYEJQG7L56KOFLZUUOBBNIG1S
PixInsight queue size	n/a
PixInsight stage	TASK_LOG

RA (center)	02h32m46s.00
RA (top/left)	02h40m26s.58
RA (top/right)	02h37m44s.44
RA (bottom/right)	02h24m35s.80
RA (bottom/left)	02h28m11s.11

Dec (center)	+61°25′19″.6
Dec (top/left)	+60°23′54″.9
Dec (top/right)	+62°40′44″.8
Dec (bottom/right)	+62°25′00″.5
Dec (bottom/left)	+60°09′20″.7

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IC 1805 Heart Nebula in Hubble Palette

IC 1805 Heart Nebula in Hubble Palette

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IC 1805 Heart Nebula in Hubble Palette

IC 1805 Heart Nebula in Hubble Palette

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