M40 (The Best Messier Object) in HαRGB (Brent Newton)

Celestial hemisphere: Northern · Constellation: Ursa Major (UMa) · Contains: 69 UMa) · Kaffa (δ UMa · The star 68 UMa · The star 70 UMa · The star 71 UMa · The star 74 UMa · The star 75 UMa · The star Megrez

M40 (The Best Messier Object) in HαRGB, Brent Newton

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M40 (The Best Messier Object) in HαRGB

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M40 (The Best Messier Object) in HαRGB

Yes, I wasted pretty much all of the clear skies I had this Spring shooting this instead of the Virgo cluster or Abell 2199. Would have added in Oiii but the Moon and the clouds never seemed to agree on their timing.

Pre-processing:
- Flats, Flat Darks calibration
- Subframe Weighing, Star Align, Local Norm
- Image Intergation

Housekeeping:
- Crop
- DBE
- LFit R, B to G
- RGB Channel Combine

Hα:
- StarNet
- Rista method TGVD, MMT
- Signal isolated from R continuum

RGB:
- ImageSolver + SPCC
- StarX
- Hydrogen applied to R, B channels
- Rista method TGVD, MMT
- GHS (Starless), ArcSinH (Stars)
- Star PixelMath Screen blend, Bill's Star Reduction

- Curves tweaks for Vibrance

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ASI 6200 MM Pro
Unique or Unusal Deep Sky Targets
WO Star 71
Central USA
Narrowband imaging
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Antlia Filters
DSO

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M40 (The Best Messier Object) in HαRGB

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