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Location: UFOUpDatesList.Com > 2012 > May > May 21

Re: Unusual Craft Over Reading, England

From: Martin Shough<parcellular.nul>
Date: Mon, 21 May 2012 11:25:58 +0100
Archived: Mon, 21 May 2012 06:48:15 -0400
Subject: Re: Unusual Craft Over Reading, England


>From: William Treurniet <wtreurniet.nul>
>To: post.nul
>Date: Sat, 19 May 2012 14:54:52 -0400
>Subject: Re: Unusual Craft Over Reading, England

>>From: Martin Shough<parcellular.nul>
>>To:<post.nul>
>>Date: Sat, 19 May 2012 16:20:43 +0100
>>Subject: Re: Unusual Craft Over Reading, England

<snip>

>Thank you Martin, for mentioning that possible explanation.
>Maybe not a soap bubble, but a mylar balloon?

Also possible.

>A problem with it
>though is that the black band in the object has a vertical
>orientation. Presumably the horizon is horizontal in England.

It is the camera axis that has a (near)vertical orientation,
pointed "at the sky". The up/down of this frame orientation is
arbitrary in relation to gravity. The orientation of the band on
this apparently shiny spheroid is unknown.

>Also, towards the end of the clip, the object turns so that the
>band disappears. The band appears to go behind the object,
>suggesting it is a semicircle rather than a full circle. A
>spherical reflection would not disappear.

>The object also seems to flash briefly occasionally, which would
>be odd if the light source were the sun. Judging from the way
>the cloud is illuminated, the sun is approximately behind the
>camera location. The flashes suggest to me that the light source
>is the object itself.

The changing reflection geometry of a bubble (or, differently,
an aspherical mylar balloon) moving in relation to the
landscape, the sun and a fixed camera is complex and the direct
illumination need not even be constant because the ray path
between it and a low sun "behind the camera" (whatever that
means) can easily be interrupted by trees, poles, buildings etc.

There're really no grounds for assuming this thing is self
luminous or is anything other than a mundane object (bubble,
balloon etc) until you have started to do some of the type of
investigation of angular relationships and camera
orientation/surroundings and local winds etc that I suggested
already, to try to put at least approximate bounds on possible
size and rate and altitude (coupled variables) and direction,
for testing predictions of bubble/balloon theories.

You may be able to prove yourself right. Until then this is not
very interesting for the rest of us.


Martin




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