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Video of Comet Iwamoto (C/2018 Y1) disintegrating

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#1 CharlesC

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Posted 14 February 2019 - 07:55 AM

Last night I made a video of Y1 comet and was surprised to see it disintegrating.  It happened at  9:43pm EST starting on frame #22.

Here are 20 frames (frames 10-41) out of 75 frames.  Used my python script in Sharpcap V2.9 to capture frames and Virtual dub to make video. 

Video was zoomed 4X, deshaked, flipped, and cropped. 

 

Equipment was; 6SE mount, 750mm F6 C5, .5FR, LN300, Sharpcap, VirtualDub.

 

Was forced to use .5FR because Sharpcap couldn't find enough stars to stack.  Camera was set to one second exposures (longest exposure I can do in a red zone).  Script was set to stack for 60 seconds for each frame capture. Ran if for 75 minutes.  Required using deshake in Virtualdub due to 6SE mount. 

 

Click on top-right arrows to go full screen and loop.

https://flic.kr/p/2dDrHGu


Edited by CharlesC, 14 February 2019 - 09:50 AM.

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#2 CharlesC

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Posted 14 February 2019 - 08:09 AM

Here is all data and full length video.  Zip file has 75 frames.  Full length video has shake problems at start and end. Virtualdub couldn't completely deshake it.  Maybe someone else can fix it. 

 

https://drive.google...zIX9GIfM3js3j21


Edited by CharlesC, 14 February 2019 - 08:13 AM.

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#3 petert913

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Posted 14 February 2019 - 08:22 AM

It does look like a chunk fell off there !



#4 CharlesC

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Posted 14 February 2019 - 08:25 AM

It does look like a chunk fell off there !

I count at least five chunks.  Like it's throwing off sparks, but these are huge pieces for me to see them.   


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#5 S1mas

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Posted 14 February 2019 - 08:51 AM

Thanks for script, I'm gonna try it.


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#6 descott12

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Posted 14 February 2019 - 08:51 AM

Very cool and very innovative capture! Great work


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#7 mclewis1

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Posted 14 February 2019 - 10:51 AM

Charles, I'd definitely submit the video to SpaceWeather.com ... maybe even APOD too.


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#8 Anduin

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Posted 14 February 2019 - 11:01 AM

Congratulations, you have something really interesting there.


Enviado do meu iPhone usando Tapatalk
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#9 CharlesC

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Posted 14 February 2019 - 12:40 PM

Charles, I'd definitely submit the video to SpaceWeather.com ... maybe even APOD too.

 

I tried Spaceweather as you suggest.  Doubt APOD would want my low quality video.  Perhaps someone else got it with better equipment?

 

I made a better versions to submit to Spaceweather below.  Learned how to use VirtualDub video filters working on this (deshake, zoom, brightness, rotate, ...)

 

 

Zoomed Y1 comet video

https://youtu.be/d2gnLveOFGY

 

Full Y1 comet video

https://youtu.be/HmFF6MZ0J40


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#10 einarin

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Posted 14 February 2019 - 01:13 PM

So what was the time frame of that video ? 75 minutes total.

I'm little skeptical that so big a chunk of comet (km scale) would eject/move so fast - if you think of the distance to comet and the scale.



#11 mclewis1

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Posted 14 February 2019 - 05:57 PM

The fragments or whatever they are (debris, dust, puffs of gas, etc.) don't appear to move much. They seem to separate from the comet and stay behind. I guess that means that they decelerated very quickly. Perhaps they are lightweight material (gas, dust, etc.) that has little mass?

 

The overall video seems similar to the images of other comets outgassing or breaking up.




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