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Re: (meteorobs) Re: NRL Instrument Makes First UV Observation of Meteor in Space
Lew:
I suggest you pass your questions on to Jiri Borovicka. I don't have
the expertise to comment on this. I would just be guessing.
Ed
Subject: (meteorobs) Re: NRL Instrument Makes First UV Observation of Meteor
in Space
>
> The news of this latest result was VERY exciting! However, this line:
>
> > "Ground-based observations of meteors cannot detect many of the
> > important elements and compounds expected to be present in meteoroids."
>
> really gave me pause. Ed and others, is it in fact true that ground-based
> visible and IR meteor spectra are useless for studying certain constituent
> elements in the meteoroid itself?? Why would this be so - are the V and IR
> lines of recombination for these elements in the meteoroid masked by the
> presence of those same elements in the ionized air column surrounding the
> meteor's entry? If so, why would this not also be the case in the far UV,
> making space-based detection just as difficult?
>
> Or are there in fact UV emission lines for meteoroid consituents which
> do not have corresponding lines in the V or near IR bands?
>
> [Now if the above statement were NOT correct, which I would doubt, would
> anyone be willing to make a pointed rebuttal to this public release? :)
> After all there's too little support for ground-based meteor research as
> it is, for us to allow its value to be downplayed in the public media.]
>
> Just a curious question!
> Lew Gramer
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