New Image: vdB 136 in Ha+RGB

[Stuart Heggie]

Taken with the AP155 and Moravian G4 (16803ccd)

https://www.astrofoto.ca/stuartheggie/ccd_photos/vdB4_136_HaRGB_via_HaRGBCombine_AP155_G4_July2025.html

15/15/16 x 10min each for RGB; 

22 x 20min H-Alpha

Calibration and processing of the RGB and H-Alpha in PixInsight as follows:

WBPP script for the four masters then CombineChannels for the RGB
RGB: SPCC, BlurX, NoiseX, Gradient, Curves, HistogramTransform
H-Alpha: BlurX, NoiseX, StarX, Curves and HT and LHE
Combine the Ha with the RGB via the process HaRGB_Combine

Photoshop processing:
Colour balance, some bad column artifact removal
Tweaks and small noise reduction then Save-for-Web

Stuart Heggie

https://www.stuartheggie.com/f783431253

[Ian Clements]

On 7/8/25 11:14, Stuart Heggie wrote:

That's a great image! I like the way RGB+Ha worked.

Very nicely done! 

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[Stuart Heggie]

Thank you Ian! The HaRGB_Combine process is really slick. 

I got an identical result doing it “old school” in photoshop but it was definitely easier in PixInsight. 

Stuart Heggie

https://www.stuartheggie.com/f783431253

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