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(meteorobs) Re: LEO antiradiant ; WAS Question about Leonid photo



Dear Friends,

Here comes Mr Kwon O Chul account about his nice APOD photo !
Please note he is not on Meteorobs. <kwon572@astrokorea.com>

I know the LEO peak night was a hard time for everyone, but Kwon's task was
specially hard ;-)

Christophe

***********
Hello, Christophe

Thank you for forwarding the emails.

Your explanation was just right.
I have taken photo with Nikon FM2 / 35mm lens.
The exposure time was about 40~60 minutes. and it was about a.m. 3 ~ 4, i
think.
With long time exposure, the radiant point moved.
and for that reason the antiradiant effect arises.

The direction was west, opposite to the radiant point.
I think this made antiradiant effect more remarable.

(At that time, i was so busy with my four cameras, i could not record exact
time and aperture.
 My three cameras were at top of the mountain and this camera was at
observatory.
 As you know, the distance between two point was more than 10 minutes-walks
along the uphill mountain path.
 And my exposure time of fish-eye was 8 minutes, so i had to run...
 At that night, i had run up and down the mountain at least 10
times... -.-;;)

Sincerely
Kwon, O Chul.


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