Timescapes - Digital Timelapse Discussion
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Faint wriggly trails
http://forum.timescapes.org/phpBB3/viewtopic.php?f=17&t=10874
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Author:  TchmilFan [ Tue Aug 20, 2013 6:13 am ]
Post subject:  Faint wriggly trails

I'm posting on behalf of my friend - he could do it but I like doing the digging!


He took a time lapse while up in the Atacama and there were some odd faint trails in the photos.
Exposure 30
Aperture f/2.8
Focal Length 22 mm
ISO Speed 800

As far as I can see, they're too fast for anything astronomical apart from small meteorites but the tracks are wrong. Too fast to be planes, too wriggly to be satellites. #2 could be, I suppose.
I'd normally think faint reflections from land-based sources but he's in the desert. Mounted on tripod, no major vibrations nearby - but that would affect the other trails.

http://www.flickr.com/photos/bambi851/9541801961/(Flickr tag not working?)
Image

Not expecting them to be anything spooky. Just curious to see if other timelapsers have encountered similar problems (if it can be called a problem, I suppose)

Ta

Author:  Siege [ Thu Aug 22, 2013 11:15 pm ]
Post subject:  Re: Faint wriggly trails

Is he using the eyepiece cap on the viewfinder? Possibly light leakage through there from his own torch while moving around behind the camera?
I've had red dots showing up in long exposures for that very reason.

Author:  bberis [ Sun Sep 08, 2013 8:29 am ]
Post subject:  Re: Faint wriggly trails

Did you find out what was causing this? Having Looked at the photo on flickr my initial thought was a hair on the sensor.

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