IC 1805 Heart Nebula (vsola)

IC 1805 Heart Nebula

Revision title: IC 1805 Heart Nebula - SHO w/RGB Stars

Not close to done on this target but I wanted to try some new techniques for processing. Just a quick processing of some data I have from last November added to data I gathered this month. I had a little over an hour of Ha data and about 30 minutes of OIII from last year. So far this year I’ve gathered almost 2 hours of Ha and an hour of OIII. In the end I had about just under 3 hours of usable Ha and just over 2 hours of usable OIII.

I wanted to try a couple of new PixInsight modules so I decided to run through this data. I used WBPP to stack, register, and perform local normalization on the data, the registered images were run through NSG for gradient removal and then processed in Image Integration to produce the Ha/OIII masters, each master had noise reduction performed on them and then run through DBE and stretched. The stretched Ha/OIII masters were combined using Pixel Math. I generated a standard HOO image using 35% Ha an 65% OIII to make the Green channel, Red was 100% Ha, and Blue was 100% OIII. I also generated a HOO image using the Foraxx HOO method of the Green channel. The two HOO had Ha added in as Luminance using LRGB combination. I used NoiseXTerminator to perform noise reduction on each of the images. The two images were blended 50:50.

I used StarXTerminator to remove the stars (unscreen selected) and made a starless image. I used curves on the starless image to adjust the contrast and increase saturation. I used PixelMath to recombine the starless image with the stars. Star reduction was performed using PixelMath and Bill Blanshan’s equations. The darkstructure enhance script was run as well.

Original
Final
B

B

Title: IC 1805 Heart Nebula - SHO w/RGB Stars

Description: Had a nice string of clear nights in September and I was able to wrap up the Heart Nebula. I ended up with a total of over 30 hours of data, only 25 of it was usable. The usable data ended up as follows: RGB – 30 minutes each, Ha – 10 hours, OIII – 8 hours, and SII – 5.5 hours.

I tried some new methods in processing this image. I went with a custom blend of the data, via Pixel Math, to make the image..Since I weighed SII and Ha into the red channel I suppose it could be a HSO vice SHO? For the Green channel I boosted OII and added in a fraction of the Ha data, for the Blue channel I doubled the OII contribution.

After blending, the stars were removed using StarXterminator and the nebula was processed. The RGB data was combined and really light processing before removing and saving the RGB stars. The RGB stars were blended into the SHO nebula to produce the final image.

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Status	Advanced success
Started	...
Astrometry.net job	6388168
PixInsight job	77HKCZ7AIXXQWNMTEQ5OK1BZTQETVHOH
PixInsight queue size	n/a
PixInsight stage	TASK_LOG

RA (center)	02h32m48s.68
RA (top/left)	02h40m18s.68
RA (top/right)	02h38m47s.58
RA (bottom/right)	02h24m48s.86
RA (bottom/left)	02h27m15s.37

Dec (center)	+61°27′38″.6
Dec (top/left)	+60°27′38″.5
Dec (top/right)	+62°37′03″.4
Dec (bottom/right)	+62°26′03″.4
Dec (bottom/left)	+60°17′20″.10

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