Double peaking meteors.

[Bill Ward]

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

Attachments:

1. 

   M20171027_005547_KILWINNING_P.jpg
   

2. 

   M20171027_020429_KILWINNING_P.jpg
   

3. 

   M20171027_024837_KILWINNING_P.jpg
   

[Bill Ward]

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.

[Alex Pratt]

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.

[Bill Ward]

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.

[Jeremy Shears]

I’ve just uploaded an image of a nice double-peaker to my Members Page

[Bill Ward]

Hi,

That’s an excellent example, and indeed a long gap between the light emissions. Must have positively skipped into the atmosphere ;-))

Bill.

PS, Great to catch up with you at Newcastle. I should have taken a chance and got on the train with you rather than waiting for the “direct” later train. Ended up being 1h 30min late!, I’m glad I had driven into Glasgow as I would not have made the last train down the local line.

[Alex Pratt]

Hi,

It looks like my NW camera recorded the same event, although the meteor was near the edge of my FoV, so unfortunately I only recorded one of the trails.

Cheers,

     Alex.

[Jeremy Shears]

Thanks Alex – certainly looks like the same event.

Sorry to hear about your travel woes, Bill. I had some delay too, but at least it was a splendid day at the Newcastle meeting. Excellent talks and good to meet up with folks, including you and Alex.

Jeremy

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