(meteorobs) Fisheye lens misunderstanding and photography update

[Thomas Ashcraft]

Meteorites USA wrote:
> Is aliasing really that important? ....... What is the desired outcome 
> of this discussion?
>   

Hi Eric,

For me as the original question poster it is an important issue.  I am 
currently trying to get as much intricate image detail as possible from 
an individual meteor capture so as to add the light, burn and potential 
electromagnetic information to my radio meteor and fireball studies. The 
sharper and truer the picture the better for my particular purposes.

Also, your further questions are good ones but probably deserve their 
own thread. Otherwise there will be major thread drift.  -  Thomas


> What I would like to learn is how to determine altitude and azimuth of 
> the retardation point of a bolide event as recorded from a fish-eye lens 
> from an all-sky cam. It's easier to figure from a camera with a 90 
> degree FOV pointing horizontally in any given direction, but an all sky 
> camera pointing straight up with a 180 degree FOV is much harder to 
> calculate. The horizon to horizon view coupled with the distortion of 
> the image and aliasing can cause mis calculations.
>
> Can someone please explain how to determine altitude and azimuth please 
> from an an all sky image? Links? Papers? Discussions?
>
> Thanks...
>
> Regards,
> Eric
>
>