Celestial hemisphere:  Southern  ·  Constellation: Orion (Ori)  ·  Contains:  Horsehead nebula  ·  IC 432  ·  IC 434  ·  IC 435  ·  NGC 2023  ·  NGC 2024  ·  The star Alnitak (ζOri)  ·  The star σOri
HaRGB - B33 - Horsehead Nebula, Min Xie
HaRGB - B33 - Horsehead Nebula
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HaRGB - B33 - Horsehead Nebula

HaRGB - B33 - Horsehead Nebula, Min Xie
HaRGB - B33 - Horsehead Nebula
Powered byPixInsight

HaRGB - B33 - Horsehead Nebula

Equipment

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Acquisition details

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Description

My last attempt on the Horsehead Nebula was one year ago - with my astro-modified Nikon D500 on the SkyWatcher Star Adventurer. Still remember that night at Fort Griffin Historical Site, with so much trouble trying to aim the Nikkor 70-200mm lens, could only track for 60 seconds, cranking up all the way up to ISO 5000. Finally only saw the faint horsehead showing up on the view finder - Pure Joy at that moment.

Here comes the revisit. The H-Alpha data was collected at home and RGB data was from TAS Atoka site this Monday. It was freezing cold (-4C).

Somehow I still feel something is missing. I haven't figure it out yet. The resolving power of the GT-81 is not enough to bring up the most important details. I tried to order an Astrodon Sloan i' filter for this target for the infrared data. The order never delivered. It will happen later, I hope.





Pre-processing of Ha Master

- Calibration / Integration, Astro Pixel Processor

- Dynamic Background Extraction, PixInsight

- Deconvolution, PixInsight

- MultiscaleLinearTransformation (Denoise), PixInsight

- ScreenTransferFunction / HistogramTransformation, PixInsight.


Pre-processing of RGB Masters

- Calibration / Integration, Astro Pixel Processor

- Dynamic Background Extraction, PixInsight

- MultiscaleLinearTransformation (Denoise), PixInsight

- MorphologicalTransformation, PixInsight

- ScreenTransferFunction / HistogramTransformation, PixInsight.


HaRGB Combination & Post-processing

- LRGBCombination (Ha master as the Lum), PixInsight

- Final Touch-up, Photoshop

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