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Double peaking meteors.

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BillW's picture
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Joined: 05/03/2014 - 08:50
Double peaking meteors.

Having the first clear night in weeks I bagged a few double peaking meteors. These are interesting little chaps.

Getting some decent spectra from these would be nice...!

One never knows what'll turn up with video observing, that's why it's great!

cheers,

Bill

BillW's picture
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Joined: 05/03/2014 - 08:50
Here are the light curves.

Here are the light curves. Note the data is smoothed so loses some intensity data. Also "time" is given to indicate the temporal evolution direction.

First two have a fainter first component then brighter second component and third one is the reverse, bright then fainter. So this indicates that there is no universal model for what should happen with binary component meteors.

See

Meteoroid structure and ablation implications
from multiple maxima meteor light curves.

Roberts, I.D.1, Hawkes,R.L.1, Weryk,R.J.2, Campbell-Brown,M.D.2,
Brown,P.G.2;3, Stokan, E.2 and Subasinghe, D.2

1Department of Physics, Mount Allison University, Sackville, Canada (email: rhawkes@mta.ca)
2Department of Physics and Astronomy, University of Western Ontario, London, Canada
3Centre for Planetary Science and Exploration, University of Western Ontario, London, Canada

from Proceedings of the Meteoroids 2013 Conference
Aug. 26-30, 2013, A.M. University, Poznan, Poland
Jopek T.J., Rietmeijer F., Watanabe J., Williams I.P., ed.

for further ideas on whats going on.

cheers,

Bill.

A R Pratt's picture
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Joined: 04/03/2014 - 14:01
Double-peaked meteors on 2017 10 27

Hi Bill,

just checked my Leeds_N camera. A fairly clear sky from here but I didn't get your listed meteors. Perhaps David A or Denis B might have them.

Cheers,

     Alex.

BillW's picture
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Joined: 05/03/2014 - 08:50
Hi,

Hi,

I still haven't fully reviewed all of the catches. For one random night I caught almost everything, stony spectra, Fe spectra, multiple peak ones, "melters" and lots of "normals".

Last night I had a window of a couple of hours of really good conditions. Decided to forego video and set up some DSLR's with the LCD chopping shutters. 480 images over 4 hours and didn't catch a thing! ;-((

What was realy interesting and pretty cool was the couple of sats I caught that I may have said were meteors. The absence of chops belies their true speed on the sky and instantly reveals them as sats.

I've had to stretch this but it shows the point. A bit symetrical for a meteor but it would have been a maybe...

I'll drop Dave/Dennis a email if I find anything else of note. I've got two cameras covering your direction now. One integrated light and one spectrum system. Both 12mm f0.8's so slightly tight on the fov. We'll get something eventually.

Cheers,

Bill.