Over three nights this past week (mid-Oct 2022) I imaged the Shark Nebula LDN1235 in LRGB, almost 370 subs in total. As is my usual routine, I first use PixInsight's Blink on all subs to visually reject obvious duds, followed after with scrubbing through SubframeSelector, then on to WeightedBatchPreprocessing.
Well, look what turned up! Two 60sec L subs, calibrated, registered and stacked above (via the max operator in PixelMath) captured this fine meteor. It appears to have been in a spin as it disintegrated, based on the many angled debris dispersion lines. There is a little exposure loss in these lines at the point in time when the first sub ended, and then the camera and N.I.N.A. were briefly busy before the subsequent exposure started.
It would seem to be a sporadic, as its angle on the sky does not trace back to this past week's Orionid shower's radiant.
This is a crop from the full field FOV.
The final LRGB Shark image, sans meteor, is here:
https://www.astrobin.com/u7qlwl/---
Conditions: SQM 21.49, humid and gusty. Afternoon skyflat.
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