M81 & M82 through the aurora? (Leela.Astro.Imaging)

Celestial hemisphere: Northern · Constellation: Ursa Major (UMa) · Contains: Bode's Galaxy · Cigar Galaxy · HD83838 · HD85142 · HD85161 · HD85458 · HD85533 · HD85828 · HD86559 · HD86574 · HD86839 · HD87000 · HD87043 · M 81 · M 82 · NGC 2959 · NGC 2961 · NGC 2976 · NGC 3031 · NGC 3034 · NGC 3077

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M81 & M82 through the aurora?

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M81 & M82 through the aurora?

I've been capturing full frame OSC data on M81 & M82. I had my rig running on the night of Fri 10 May, when ofc the aurora came to town. It was even visible in Bortle 9!

And that night I happened to have the Ha/Oiii dual band filter set to capture. So I was curious to see whether the aurora would affect any of the data I was capturing that night.

This is c 2hrs of data - just from that night - calibrated and processed. Is the purplish/maroonish "nebulosity" in this the aurora? I've attached an inverted image too which seems to show something there.

When I compare this to the 8hrs of data from other nights, none of the background colour seems to be there.

Is this the aurora??

Final
Original
B

UK Astro-Imaging
Cloudy Nights
Takahashi Refractors

DSO (wide-field)

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Status	Advanced success
Started	...
Astrometry.net job	9859321
PixInsight job	PRA1VRJB37ZGV7Q4KU9ENII1YPJ87WRT
PixInsight queue size	n/a
PixInsight stage	TASK_LOG

RA (center)	09h56m36s.60
RA (top/left)	09h43m37s.60
RA (top/right)	09h45m43s.84
RA (bottom/right)	10h07m30s.100
RA (bottom/left)	10h09m29s.89

Dec (center)	+69°02′32″.0
Dec (top/left)	+70°52′30″.7
Dec (top/right)	+67°09′23″.7
Dec (bottom/right)	+67°09′51″.8
Dec (bottom/left)	+70°52′36″.7

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M81 & M82 through the aurora?

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