Pour moi ; il s'agit d'un engin non conventionnelle juste à la vue de ces manœuvres ; Kentaro Mori via ufoupdate compare cette vidéo à une autre très ressemblante
https://www.youtube.com/watch?v=nc93h-CQjeASelon l’analyse de Bruce Macabee et 1 topic qui dure depuis
des semaines sur UFOUPDATE se serait peut-être un hoax ; voici la réponse
de Bruce Macabee
Subtracting
the erratic camera motion and measuring the position
of the light relative to the house window, I think the object
seems to drift slowly up and to the left over the rooftop during
the video. This makes me think of a bright star or planet. But
of course with no direction or time information to go on it's
hard to say. The pattern of lights hints at some optical or
video artefact but I haven't seen an effect exactly like this
before. Any thoughts?
I wonder if the guy videoed a bright planet using a "star
filter" or something like that on his lens (a diffraction filter
with three gratings that are 120 degrees apart).
He might have used a color filter as well to make the light
approximately monochromatic to avoid color blur that would occur
when a diffraction filter is used with polychromatic light such
as starlight.
Tha latter portion of the video looks like an "emboss" version
of the first part. Pulsations of the image could be a
combination of "focus hunting" by the camera and atmospheric
scintillation.
If all this were to turn out to be true, then it would be a
hoax.
Réponse de Viktor Golubic analyste en image via ufoupdate
Hi Bruce, I
think this is a very good suggestion. However, every
diffraction filter I know has bilateral symmetry: Where there is
the corresponding right half identical to its left. However,
this is a seven point polygon (not even numbered) with no
bilateral reflection plane. I'm not sure any exist and even if
you attempted seven, by default it will a produce a fourteen
point pattern (even not odd like this one).
Any additional thoughts?
My only thinking is that this is a lens flare effect caused by a
thin film coating and the shape of the aperture. In that case,
the spatial distribution of the flare depends on the shape of
the aperture itself which has a seven point symmetry.
You are correct that there wouldn't be a "7-fold symmetry"
created by a filter such as described above.
I have looked at the video again and noted that it seems like a
"6-fold" array with a couple of other lights in seemingly random
but fixed relative to other lights -
positions.
The seven is always there and never varies so I'm not seeing
anything but seven. I had tried to envision six but the axis are
also bent slightly to accord with a seven-fold system.
I also note the "lights" (diffraction orders if this were an
image of a diffraction pattern) seem weak or non-existent at the
right side. It is as if some lights were missing or blocked by
something.
I thought of that too but the intensitieare are not diminished
and I have frozen the images multiple times throughout the
recording. The symmetry does not appear to have any voids, but
blocking could be there.
Since a diffraction filter operates inside the camera the
diffraction orders would be created and there would be nothing
to block a diffraction order.
Yes, agreed
I therefore question my own suggested explanation and note that
others have proposed a LED light hoax. If so, and if the lights
were intended to be in a pattern, then something happened to the
'contraption' on the way up!
My first thoughts were LED helium filled balloons and had bought
some recently for my friends daughter.
The slight rotation could still be adequately explained as the
photographer rotating the camera as he held it. I can still
believe that we are looking at a lens flare through a seven
point aperture, noting that the center one is always brightest.
A thin-film coating on the lens could cause the two order
separation along each of the seven axes, thus filling out the
flare as observed.
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