Heart 'n Soul - Samyang lens (Tom Gray)

Heart 'n Soul - Samyang lens

Revision title: Resized

Three decent clear nights over the last week have given me opportunity to extend my integration times and put my Samyang lens through its paces. There are still some problems with backspace and tilt but the nights too good to waste on optimising this.

Here we have the ‘heart and soul’ nebulae, IC 1805 (Sh2-190) and Sh2-199 respectively, situated in the Perseus arm of the MW, 7500LY away. Composed of hydrogen and oxygen, ionised by the bright star cluster, Melotte 15 in the centre. The soul lies close by, with deep pools of OIII.

I captured these at f2.8 in hope of sharpening up the stars; I’m not sure this has made much difference. I combined data over two nights using guided 5min and 10min exposures on my little Star Adventurer mount. I used my L-eNhance NB filter in order to extract Ha and OIII channels.

Calibrated with dark flats that seem to work better than normal bias frames with my 183 sensor and post processed in Siril using GHS. Starnet extraction allowed me to process the nebulae and stars separately with much less stretch. The final recomposition has been sharpened and denoised using free AI tools from Deep Sky Detail. Please do enjoy.

This is a basic OSC processing. I will do an HOO and perhaps false colour images in revisions. Overall, I’m very pleased with the result. Sure the bottom of the image has some tilt issues, but the saturation, depth and detail are so much better with longer exposures and integration. Comments are always welcome.

Original
B
Final
E
F

B

Title: False colour to show up some of that blue OIII

Description: Pixel math composition R=Ha, G=0.4*Ha+0.6*OIII, B=OIII in Siril, Starnet ++, recomposition and Astrosharp/clean

Uploaded: ...

E

Title: Resized

Description: For mouseover

Uploaded: ...

F

Title: Synthetic stars

Description: StarNet removal - restretching starless image using GHS followed by Astroharp/Astroclean AI. Stars resynthesised in Siril before recomposition, with final resize in Fitswork. Still trying to produce better stars and remove halos using L-eNhance filter.

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Camera Lens Astrophotography
Sky-Watcher Star Adventurer
Altair Astro 183 M/C Hypercams
UK Astro-Imaging

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Status	Advanced success
Started	...
PixInsight job	9S9CI833RGR3UOHJURDZR9RMDLUK3ACI
PixInsight queue size	n/a
PixInsight stage	TASK_LOG

RA (center)	02h43m51s.37
RA (top/left)	02h21m12s.54
RA (top/right)	03h03m53s.39
RA (bottom/right)	03h08m45s.70
RA (bottom/left)	02h21m09s.86

Dec (center)	+61°02′32″.2
Dec (top/left)	+59°22′52″.2
Dec (top/right)	+58°56′48″.5
Dec (bottom/right)	+62°26′54″.7
Dec (bottom/left)	+62°55′50″.8

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Heart 'n Soul - Samyang lens

Revision title: Resized

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Heart 'n Soul - Samyang lens

Revision title: Resized

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