Possible Example of Airplane Trails

• by TED91 moderator

  Three parallel artifacts. What are they? Damage of the original photographic plates?

  

  

  Posted February 5, 2014 7:58 PM

• by TED91 moderator

  Here is another example: AWI0000f70

  

  Posted February 5, 2014 8:39 PM

• by lrebull scientist, translator, admin

  My bet is maybe plane. One light for each wing! Had several of these in my thesis data. Would be useful to do the math as to the angular separation of the two streaks and how far apart a typical plane's wingspan would appear at 40,000 feet.

  Posted February 5, 2014 9:20 PM

• by jdebes scientist, admin

  A 747's wingspan is 211ft, which would subtend ~18 arcminutes at 40,000 feet. If I did my trig correctly, and that's about what the one image looks like, maybe closer to 10 arcminutes.

  Posted February 6, 2014 4:32 AM

• by TED91 moderator

  http://talk.diskdetective.org/#/subjects/AWI00006bt - Probably another example

  http://simbad.u-strasbg.fr/simbad/sim-coo?CooDefinedFrames=none&CooEpoch=2000&Coord=254.2542274+45.4593286&submit=submit query&Radius.unit=arcmin&CooEqui=2000&CooFrame=FK5&Radius=0.2

  Posted February 7, 2014 9:26 PM

• by TED91 moderator

  There is another example: AWI00004uf

  http://simbad.u-strasbg.fr/simbad/sim-coo?CooDefinedFrames=none&CooEpoch=2000&Coord=133.1766068+44.4229167&submit=submit query&Radius.unit=arcmin&CooEqui=2000&CooFrame=FK5&Radius=2

  http://i1319.photobucket.com/albums/t662/Ted_91/Disk Detective/ImageAWI00004uf_zpsb1462955.jpg

  Posted February 20, 2014 9:26 PM