Heart and Melotte 15 with Topaz Studio masking (Jonathan Young)

Celestial hemisphere: Northern · Constellation: Cassiopeia (Cas) · Contains: IC 1805 · Sh2-190

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Heart and Melotte 15 with Topaz Studio masking

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Heart and Melotte 15 with Topaz Studio masking

The Heart Nebula in Cassiopeia at 7500 light years. An intense star forming region frames Melotte 15.

21.5 hrs for an HA-SHO artistic composition from August 18, 19 and 20th 2020.

First full run trialing a new processing workflow using Topaz Studio 2 with integrating Denoise, Sharp and Adjust and the masking features as plug-ins. I find it is still necessary to correct smaller star shapes after using the AI algorithms. So far I've found that Topaz has many tools give a slight boost to small, mid and large detail/contrast, while adjust drives additional color depth that is beyond what I can achieve in other software. A bonus of using Studio II integrated package is that masking and opacity options are available to balance the adjustments and can focus the AI algorithms on lighter details in the background.

Processing:

Initial stacking in DSS (Average stacking, 22% culled for star trails, tracking issues). 21 hrs total.

Initial background, stretch, HDR, decon, sharp, color at Red = S50H50, Green = S50H50, Blue = O100 in Startools (Ha - SHO) & denoise.

Tweaks Topaz Studio (AI Clear, basic adjustment, precision detail)

Denoise AI with 50% weight & mask (lum ~33%) (low light)

Sharpening AI with 67% weight & mask (lum ~33%)

Adjust AI no mask (20% weight)

Dehaze at 10%

Mask and replace stars in Startools.

Suburban Astrophotography
Central USA
Fine Art Astrophotography
Cloudy Nights

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Status	Advanced success
Started	...
Astrometry.net job	4427995
PixInsight job	BRH2LIW7X1YSSIKPVGGIQ59W842BHCOO
PixInsight queue size	n/a
PixInsight stage	n/a

RA (center)	02h32m22s.26
RA (top/left)	02h39m00s.100
RA (top/right)	02h31m42s.67
RA (bottom/right)	02h25m52s.36
RA (bottom/left)	02h32m59s.99

Dec (center)	+61°28′41″.9
Dec (top/left)	+61°48′40″.8
Dec (top/right)	+62°19′49″.8
Dec (bottom/right)	+61°07′33″.0
Dec (bottom/left)	+60°37′31″.5

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Heart and Melotte 15 with Topaz Studio masking

Heart and Melotte 15 with Topaz Studio masking

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Heart and Melotte 15 with Topaz Studio masking

Heart and Melotte 15 with Topaz Studio masking

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