The ion tail of C/2023 A3 Tsuchinshan-Atlas - September 28, 2024 (HR_Maurer)

Celestial hemisphere: Southern · Constellation: Sextans (Sex) · Contains: Solar system body or event

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The ion tail of C/2023 A3 Tsuchinshan-Atlas - September 28, 2024

Acquisition type: Electronically-Assisted Astronomy (EAA, e.g. based on a live video feed)

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The ion tail of C/2023 A3 Tsuchinshan-Atlas - September 28, 2024

Acquisition type: Electronically-Assisted Astronomy (EAA, e.g. based on a live video feed)

As a plasma guy, im especially fascinated by ion tails. When photographing the comet in the east, i was a bit disappointed not to see an ion tail in my images. So, after coming back home from La Palma, i tried to bring out the ion tail from an image stack. Here's the result of capturing the comet on October 28th. What i did was
- calibrated the images (flats, darks)
- removed the dawn gradient from each single sub, using GraXpert 3.2
- removed median from each single sub in PI
- registered (not easy because of atmospheric refraction) in PI
- stacked in PI
- starXterminator, noiseXterminator in PI
- merged the result with a separate foreground stack and part of the sky background in photoshop

Due to re-merging with the dawning sky, the ion tail was barely visible again, so i tried to enhance it. In my opinion it is visible in more detail in the raw-ish comet stack. I uploaded that raw-ish stack for comparison.

Original
Final
C

Comets Imaging
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Status	Advanced failed
Started	...
PixInsight job	O0PJ4MDHJYFUJWKSFCJ9NR8T27ZVJIMH
PixInsight queue size	n/a
PixInsight stage	PLATE_SOLVING_IMAGE

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The ion tail of C/2023 A3 Tsuchinshan-Atlas - September 28, 2024

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The ion tail of C/2023 A3 Tsuchinshan-Atlas - September 28, 2024

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