(meteorobs) OT-Possible single station determination of

[ycsentinel]

My message addendum got lost. It is being repeated.

It occurs to me that file sharing through Windows would not require a
dedicated live DSL connection and would allow great distances to be
used for range imaging. 

The individual computer time bases or time clocks need only to be
close enough to identify the fireball or meteor between the two
cameras capture systems since it is not necessary to retrieve these
files instantaneously.

Something for me to ponder.  

Larry
YCS 


--- In meteorobs at yahoogroups.com, "Gural, Peter S."
<PETER.S.GURAL at ...> wrote:
>
> Larry;
> 
> I must agree with much of what Chris has indicated in the previous posts
> on this subject. However, there is an alternative which may or may not
> appeal to you. It turns out an IOTA occultation observer named Scott
> Degenhardt had laid out a series of NARROW field of view imagers (approx
> 2 degree FOV), separated by just a few kilometers, and pointing at low
> elevation angle. This was done to measure the physical width of an
> asteroid via stellar occultation timing. He serendipitously collected
> the same meteor in the video record of 5 cameras and because of the
> narrow FOV (high angular resolution of the focal plane) we were able to
> determine trajectory (thus range) quite easily with just a few kilometer
> separation. I am working with him on a paper for the Journal of the IMO
> but it raises the prospects for what I would call short baseline, narrow
> FOV imaging for meteors. 
> 
> Now before you get too excited, the flux rate goes down because of the
> narrow FOV which would have been compensated for by the design Scott
> came up with that achieved better than +10 mag limiting "stellar"
> magnitude for very low cost, but... the angular velocity trailing losses
> across the focal plane because the meteor is whipping along at a lot of
> pixels per frame, drives down the number of meteors you can see. I am
> working on the optimal pointing and separation for such a system before
> we go to press on the article. Thus, it is not a great system for
> determining fireball distances in large FOV systems. Your best bet there
> is the suggestion by Chris to separate the pair of imagers by tens of
> kilometers.
> 
> Pete Gural 
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