[meteorite-list] Re: Entry Burn [was Lunar Burn]

From: E.P. Grondine <epgrondine_at_meteoritecentral.com>
Date: Wed Aug 23 10:42:24 2006
Message-ID: <20060823144215.37804.qmail_at_web36903.mail.mud.yahoo.com>

Hi all -

While one might think that the difference in entry
spectra is simply a reflection of the neural function
of the eye, based on my observational experience, I
have to disagree. Both entries were bright, and there
was a distinct difference in spectra.

I think this could go the way of the cold meteorites
discussion, but fortunately in this case the color
capabilities of automatic videotaping systems will
probably resolve the question in the near future.

The one had a green cast to it, the other did not. At
 least that's how it looked to me. I suppose for the
time being maybe its best to leave it at that.

good hunting,
Ed
 
--- Marco Langbroek <marco.langbroek_at_wanadoo.nl>
wrote:

>
> I agree with Chris. Bear in mind that the source of
> the luminous phenomena we
> see when we see a meteor, is not so much the
> meteoroid itself burning up: it's
> the atmosphere around it becoming incandescend.
>
> - Marco
>
>
> > There are only a limited number of meteor spectra,
> so the colors aren't
> > real well understood, but I'd be surprised if you
> saw the nickel
> > emission over the atmospheric oxygen. The majority
> of slow, bright
> > meteors are reported as green by many witnesses,
> but only a small
> > fraction of those contain significant nickel.
> >
> > Chris
>
>
> -----
> Dr Marco Langbroek
> Dutch Meteor Society (DMS)
>
> e-mail: meteorites_at_dmsweb.org
> private website
> http://home.wanadoo.nl/marco.langbroek
> DMS website http://www.dmsweb.org
> -----
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Received on Wed 23 Aug 2006 10:42:15 AM PDT