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Advanced Processing of the M17 Nebula in Hubble Palette

1 year ago
2
Peter Jenkins is your guide through the entire processing process of the M17 nebula. All images were taken at full moon through the CHI-2 50cm telescope for under 70 credits. Peter squeezes out every possible detail despite the moon conditions to create an award-winning image. You can download the associated dataset from the bottom of the page.
SPECIFICATIONS
Tutor .......................................................................................................................................................................................................................... Peter Jenkins
Parts .......................................................................................................................................................................................................................... 14 videos
Duration .......................................................................................................................................................................................................................... 1h 04m
Level .......................................................................................................................................................................................................................... Premium
Software used .......................................................................................................................................................................................................................... PixInsight, Photoshop

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PART 1
Deciding which image to use
1 year ago
2
Deciding which image to use
PART 1
Deciding which image to use
3 minutes
Cosmetic correction to remove flaws
PART 2
Cosmetic correction to remove flaws
4 minutes
Image registration
PART 3
Image registration
2 minutes
Image integration
PART 4
Image integration
5 minutes
Cropping the image sets
PART 5
Cropping the image sets
2 minutes
Dynamic Background extraction
PART 6
Dynamic Background extraction
6 minutes
Histogram transformation & Noise reduction
PART 7
Histogram transformation & Noise reduction
8 minutes
Star removal
PART 8
Star removal
4 minutes
Create RGB images for stars
PART 9
Create RGB images for stars
5 minutes
Create Luminance layer for detail
PART 10
Create Luminance layer for detail
4 minutes
Fine tune and combine starless images
PART 11
Fine tune and combine starless images
7 minutes
Add coloured stars and Luminance
PART 12
Add coloured stars and Luminance
3 minutes
Sharpening
PART 13
Sharpening
4 minutes
Levels, Curves and Colour saturation in Photoshop
PART 14
Levels, Curves and Colour saturation in Photoshop
7 minutes
PART 1

Deciding which image to use

Comments

Mr. Jenkins, the whole tutorial is very instructive especially Part 14 very useful, partial treatment with curves is very interesting. Thanks a lot.

Hi Peter,

Thanks for the tutorial - I have some images from AUS-2 which has a column defect, I applied the technique you describe - but with the limited subs from a one-click request pixinsight appears to simply blank the defect, such that when you stack you get a noticeable dark line present as opposed to the light.

Does pixinsight not populate data for the bad column by interpolating the pixel value from adjacent rows or columns? Or at least populate the values as a random noise value?

Or have I entirely missed a setting that I am supposed to apply? It seems like I have replaced a bright defect with a dark one of lesser severity.

Thanks,

John.