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Location: UFOUpDatesList.Com > 2012 > Aug > Aug 26

Re: 'Snowflake' Video From South America

From: Bruce Maccabee <brumac.nul>
Date: Sat, 25 Aug 2012 17:25:13 -0400 (EDT)
Archived: Sun, 26 Aug 2012 08:35:34 -0400
Subject: Re: 'Snowflake' Video From South America


>From: Viktor Golubic <Diverge247.nul>
>To: post.nul
>Date: Thu, 23 Aug 2012 21:44:53 -0400 (EDT)
>Subject: Re: 'Snowflake' Video From South America

>>From: Bruce Maccabee <brumac.nul>
>>To: post.nul
>>Date: Tue, 21 Aug 2012 12:02:13 -0400 (EDT)
>>Subject: Re: 'Snowflake' Video From South America

>>>From: Martin Shough <parcellular.nul>
>>>To: <post.nul>
>>>Date: Mon, 20 Aug 2012 12:41:39 +0100
>>>Subject: 'Snowflake' Video From South America

>>>http://tinyurl.com/c6c5pfu

>>>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.

>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.

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.

Since a diffraction filter operates inside the camera the
diffraction orders would be created and there would be nothing
to block a diffraction order.

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!



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