(meteorobs) Question on an interesting meteor -Enhanced Picture

[Larry]

Hi Pat.

Visual indication of tumbling or rotation to date has been in spiral trains 
or pulsating flaring. The above and below reversed curves of this outgassing 
would be a rather unique or unusual additional way of determining tumble or 
rotation.... which is worth pursuing.

I fully agree with you on the wild wind theory.  No part of it makes sense 
given the image and certainly nothing offered to date on wind blown trains 
has any similarity or relationship to what is clearly photographed jetting.

The curving of the jetted streams and its curve reversals below occured to 
me to be evidence of tumbling or rotation many hours after I first viewed 
this image and was when I tried to figure out what would make those streams 
act like that. It was not an instant assessment.

I believe the meteor occured near the end of the 2 minute filming because of 
the supurb sharpness and resolution of this event.

I do not own or use fine cameras like the 20D Pat. I have no info. on what 
would be best.

Larry
YCSentinel


----- Original Message ----- 
From: "pat_branch" <pat_branch at yahoo.com>
To: "Global Meteor Observing Forum" <meteorobs at meteorobs.org>
Sent: 2009/09/10 06:50
Subject: Re: (meteorobs) Question on an interesting meteor -Enhanced Picture


> I'm not sure the rotating meteor is important, it could still be ejecta or 
> outgassing. My only problem with ejecta/outgassing is the 4km range. While 
> I have not done any calculations and drag is small at that altitude you 
> are talking about ejecta coming off at every fast velocities which mean 
> large internal pressures. I'm thinking 5-6000 psi and I doubt most hot 
> non-iron meteors would withstand more than 2-3000 psi before ejecting 
> particles.
>
> The problem I have with wind blown train, is the rest of the path is so 
> smooth and undistrubed that it appears winds are very light. Also winds 
> produce a bunching effect due to slowing of the leading edge, so you don't 
> get the sharp pointed ends you get bullet looking ends. Wind shear at the 
> 3 upwards areas followed by a downward shoot would mean a lot more 
> spreading in the area between them.
>
> I'm sure we have all formed our own opinions. I guess I'm going to make 
> sure I have a few cameras and different angles (50-100 miles apart) for 
> the Leonids! Any good suggestions on cameras? I've gotten good results 
> with my film camera, but ready to try a DSLR (other than my little 
> Pentac).
>
> --- In meteorobs at yahoogroups.com, "Larry" <ycsentinel at ...> wrote:
>>
>> And none of the adversaries appear to be willing to even suggest a simple
>> rotating meteoroid mass with outgassing or ejecta. I am disappointed in 
>> the
>> scientific objectivity. But I can live with it as it does indeed cause
>> greater thought in defense of a fixation however right or wrong.
>>
>> Absolutely no offense intended to anyone.
>>
>> YCSentinel (with a fixation too.)
>>
>
>
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