(meteorobs) Possible Innovation ? - Addendum

[stange34 at sbcglobal.net]

If I had to guess, I would bet this is what Ed Majden is preparing to do 
with his new scatter equipment..... Find the relationships. :-)

YCS


----- Original Message ----- 
From: <stange34 at sbcglobal.net>
To: "Global Meteor Observing Forum" <meteorobs at meteorobs.org>
Sent: 2007/11/01 05:06
Subject: Re: (meteorobs) Possible Innovation ? - fireball movies 
withscattersound


> Just a suggestion for your consideration if you have established a 
> confirmed
> direct scatter connection to specific Fireball events on camera.
>
> A research effort  into characterizing Fireballs by way of scatter signal
> envelope would be unique. These areas of application might be using 
> sideband
> trapizoidal modulation shape or something similar(remember the trapizoid 
> on
> early post Korean War sideband?)  to determine some of the following
> possibilities. (I assume you are a radio amateur).
>
> a) Angle of attack, either approaching or receeding,
> b) Direction,
> c) Velocity (Speed & Direction),
> d) Length of any trains as a means of determining its additional effect on
> scatter,
> e) Mass, or physical ablation diameter/length,
> f) Ablation temperature,
> g) Additional significant meteor characteristics you may think of....
>
> Putting scatter into a "more structured science" beyond simple detection
> would advance knowledge in meteor science. My opinion, however small.
>
> YCS
>
>
> ----- Original Message ----- 
> From: "Thomas Ashcraft" <ashcraft at heliotown.com>
> To: "Global Meteor Observing Forum" <meteorobs at meteorobs.org>
> Sent: 2007/10/31 17:56
> Subject: (meteorobs) Possible Innovation ? - fireball movies with
> scattersound
>
>
>>
>> Oct 31, 2007
>>
>> Greetings Meteor Observers.
>>
>> Here is an update on my fireball capture system ( video and radio) and I
>> have a question for the experts.
>>
>> I am now recording optically all night with an all sky camera and
>> fisheye lens and have added a second forward scatter radio into my
>> system. I am working at 61.250 MHz and 83.250 MHz. ( Both radios are
>> ICOM PCR 1000 models).  The system is now capturing fireballs with
>> stereo sound.
>>
>> Question :  Has anyone else made movies of fireballs with sound like
>> this?  I am wondering if this is original work or some sort of possible
>> innovation?
>>
>> Here is a webpage with a sample movie with stereo forward scatter :
>> http://www.heliotown.com/Fireball_Video_Oct_30_2007_Ashcraft.html
>> :
>> :
>> And below are a couple of movies ( mono sound in these cases) that
>> exhibit sonic detail of the fireball trail as the fireball flares.
>> (Below movies are choice of .mp4 or .divx)
>>
>> http://www.heliotown.com/fb20071026_0755UTspec.divx          3 MB
>> http://www.heliotown.com/fb20071026_0755UTspec.mp4          3.4 MB
>> :
>> http://www.heliotown.com/fb20071022_054550utNICE.divx      1.1 MB
>> http://www.heliotown.com/fb20071022_054550utNICE.mp4      3 MB
>>
>> Many thanks for any references to other related work.
>> .
>> Clear skies,
>> Thomas Ashcraft
>> ashcraft(at)heliotown.com
>>
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>
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