Mysteries, Chemtrails, Aerosols :: Mysterious NZ New Zealand based Discussion Forums The strange & mysterious, archaeological anomalies, modern oddities... Current affairs, health & medical issues, Aerosol Spraying in NZ... ...and general interest: ARCHIVES
As luck would have it I had copied two images to Flickr some time ago as I was going through some saved to disk stuff from an expired PC - anyway, Hector they are not good images - BUT if you look carefully (or less carefully re the science of the eye/brain) the line/shadow is visible, albeit faintly. The line was much more visible with the naked eye. I am happy my humble camera has managed to provide a record of what I saw and thought to be strange. The line/shadow begins at the 'hook' on the lower end of the trail. I am not certain about the time of day - I pretty sure it was early morning. (Note: There are 4 images in this set - only the first 2 images are applicable to this thread.)
http://www.flickr.com/photos/44694153@N00/sets/72157602042183363/
Also .... I uploaded some images to Flickr today to update folk on the skies over this way (will post a link in separate thread) ... one of those images was taken in Nelson on Monday ... I saw an irregular persistent trail with a line/shadow behind it .. The image does not show the line/shadow - it was very messy sky with strong glare - but very similar formation to the linked images.
Hector, what I have provided may not be enough for you to confidently assess and attempt to answer my question. Although I am not too sure I can supply any further info about the images, please try me.
I hope my linking to Flickr is ok - all that is needed is a yahoo ID. :)
The link you gave to your images leads to this (after I logged in):
Flickr wrote:
This page is private.
Oops! You don't have permission to view this page.
You will have to change the viewing permissions to "the whole world" if you want to share the pictures to people who don't have an account there. I do, but I still don't have permission to view them.
While you're doing that, this trail is not straight
http://antwrp.gsfc.nasa.gov/apod/image/0706/sts98plume_nasa_big.jpg
but there is a bit of it that is straight enough to cast a visible shadow when viewed from the place where the camera is located. An observer only needs to move a few hundred metres away (forward or back with the plume to the left or right) to not see the shadow; and move back (or forward), and see it again. In that sense "it's a kind of magic", but not when you understand what you are looking at - the geometry of the situation.
The image I posted from Nelson (in the "About those black beams ..." topic) has a contrail that is not straight (in the part that is visible in the photo), but it is still casting a shadow. The part of the contrail in line with the sun needs to be long enough to cast a visible shadow. "Long enough" depends on the haze conditions on the day.
These shadows in NZ are not as pronounced because the air here is not as polluted with particulates (smoke, dust, etc), and because we are in a maritime climate (as opposed to continental in the US or Europe). The air here originates over the ocean (mostly) rather than a neighboring industrial polluter.
Yes, I can see it in both photos; faintly. It looks like a shadow.
Do you know the date it was taken, and where from (approximately), and the view direction. It looks like it is directly under one of the flight routes, so that fact will help to cross check the location and view direction.
