(meteorobs) Hypervelocity meteors

[Ed Majden]

On 30-Dec-07, at 9:53 AM, Pavol Habuda wrote:

> A had some time to read that article. Here are some notes on that one.
>
> 1. Spectrum is lack of green forbidden line 557.5 nm. It means, either 
> meteor
> was too slow (slow than 30 km/s) or indeed very fast, with height of 
> ending
> above 115 km. Article proposes meteor height about 100 km. It is 
> nonsense, in that
> height green line must be very prominent in spectrum.
>
>

Dear Pavol:
	I'm also a skeptic when it comes to these velocity claims.  With this 
in mind, I have a question regarding your statement above re the OI 
forbidden line at 557.7 nm.   I have seen many Perseid spectra recorded 
on film that don't show the OI line.  On the other hand, all of my 
image intensified spectra record this line very well.  Do you have an 
explanation for this?
Best regards and Happy New Year:
Ed Majden

http://members.shaw.ca/epmajden/index.htm