Aurora Mystery Taken by John Ashley on October 7, 2018 @
West Glacier, Montana
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Camera Used: NIKON CORPORATION NIKON D750 Exposure Time: 15/1 Aperture: f/2.0 ISO: 3200 Date Taken: 2018:10:10 18:30:31
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In my timelapse images of northern lights Sunday night there is an odd, white blob that appears to move from near center frame to the left edge in just under 3 minutes real time, just after the aurora started. Anyone have any ideas what this might be? Nikon D750 with 24mm Rokinon lens, consecutive 15-second exposures with 2-second delay between frames.
I can't entirely rule out a light leak from the camera viewfinder, but I don't think that's it. I don't often block the viewfinder at night, but I only turn my headlamp on when necessary, and I make a point of not shining my headlamp towards the cameras. I was tending a southward camera at the time so I wasn't looking north when these frames were recorded, unfortunately.
There is actually a larger but dimmer blob that immediately preceded this one. You can see both on the timelapse video on my business FB page at: https://www.facebook.com/JohnAshleyFineArt/?__tn__=kCH-R&eid=ARC7KRw1837jW3zx_n6DLhzE3WsGbdAZkDCyUz0LaJmSyNujnpQ-jqd1byirjOJchBLunt5Or0A-6d5J&hc_ref=ARSPfJdp4XtUHPIRv-xnH9MNW6L6XRraPIm2j9oGLhTSn1LJa77LCsp5enZ5V9FFqqo&fref=nf&__xts__[0]=68.ARCyQXHtQiTBp76DdJ0SFGYVWXjnwMtdtspyq7lbFSZJ61Fu-gRIZmnIfcFZJEOX4ChfHMwg1A2HeUi8L0redSI79tm_2NeQTdg9kqyOCWazzPAfMiCMsUmt2V7T6fhXQm5RVeAvVdlUkOS7JTzGMOG57O6-oP-1L1WIbBlgEriAu4Xevz58DQ