Go Back   IceInSpace > Images > Solar System
Register FAQ Calendar Today's Posts Search

Reply
 
Thread Tools Rate Thread
  #1  
Old 20-12-2012, 01:37 AM
naskies's Avatar
naskies (Dave)
Registered User

naskies is offline
 
Join Date: Jul 2011
Location: Brisbane
Posts: 1,865
Persistent train from Geminid meteor

Hi all,

I was very privileged to have observed hundreds of Geminids last week from dark skies in Leyburn, and also had a couple of Canon 5DmkIIs capturing time lapse images for half the evening.

I noticed that quite a few of the meteors I imaged had very noticeable persistent trains, such as this:

6.2 MB video

This bright Geminid streak in Cancer was just under 5 degrees long. If you watch the video carefully, you can see a persistent train grow larger and fainter during the video. Each frame was recorded for 10 sec at 35 mm, f/1.4, ISO 6400, and the duration of entire video is 14 min of elapsed time.

I've also created a montage of the time lapse:

2500x1285 montage (2 MB)

The left column shows the raw frames with enhanced contrast; the middle column has the sky background subtracted and then linearly stretched; and the right column has the sky background subtracted, inverted, and then stretched.

Hope you like it. Thanks for looking!



PS: if you look really carefully at the video, you'll also be able to spot 5 moving satellites, 3 geostationary satellites flaring, and 1 geostationary satellite at constant brightness.
Attached Thumbnails
Click for full-size image (stackedImage3.jpg)
169.3 KB56 views
Click for full-size image (GeminidMeteorTrain.jpg)
108.2 KB60 views
Reply With Quote
  #2  
Old 20-12-2012, 04:38 AM
iceman's Avatar
iceman (Mike)
Sir Post a Lot!

iceman is offline
 
Join Date: Sep 2004
Location: Gosford, NSW, Australia
Posts: 36,799
Great work Dave, love the trail!
Reply With Quote
  #3  
Old 20-12-2012, 07:00 PM
naskies's Avatar
naskies (Dave)
Registered User

naskies is offline
 
Join Date: Jul 2011
Location: Brisbane
Posts: 1,865
Thanks Mike!
Reply With Quote
  #4  
Old 20-12-2012, 07:38 PM
colinmlegg's Avatar
colinmlegg (Colin)
Registered User

colinmlegg is offline
 
Join Date: Dec 2011
Location: Perth, WA
Posts: 610
Excellent capture, Dave. Nice montage and video.
Reply With Quote
  #5  
Old 20-12-2012, 09:25 PM
Octane's Avatar
Octane (Humayun)
IIS Member #671

Octane is offline
 
Join Date: Dec 2005
Location: Canberra
Posts: 11,159
Dave,

Oh, wow, that is awesome! Great catch!

H
Reply With Quote
  #6  
Old 21-12-2012, 11:48 AM
naskies's Avatar
naskies (Dave)
Registered User

naskies is offline
 
Join Date: Jul 2011
Location: Brisbane
Posts: 1,865
Thanks Colin & H! After being dazzled by the bright meteors, I definitely didn't see any of the trains naked eye. Next time I might try to point a pair of binos or my Dob at them to see if I can spot them.
Reply With Quote
  #7  
Old 21-12-2012, 06:11 PM
Matt Wastell's Avatar
Matt Wastell (Matt)
Look up, look good!

Matt Wastell is offline
 
Join Date: Jul 2009
Location: Brisbane, Australia
Posts: 2,762
Hi Dave - super work - I did pick out a few satellites in the vid!
Reply With Quote
  #8  
Old 21-12-2012, 11:22 PM
John Hothersall's Avatar
John Hothersall
Registered User

John Hothersall is offline
 
Join Date: Apr 2007
Location: Thornlands, Brisbane.
Posts: 1,346
Great decay of the meteor train caught, thats what I would have loved to get. Saw meteor tarin decays in the Leonids in 1998 fireballs and its amazing to see the shapes they fade into over a minute or two.

Cannot see the video atm - will try again later.

John.
Reply With Quote
  #9  
Old 22-12-2012, 12:26 AM
ourkind's Avatar
ourkind (Carlos)
There is no substitute

ourkind is offline
 
Join Date: Jul 2012
Location: Sydney
Posts: 1,964
Wow Dave that is brilliant, love the video! Thanks for sharing it. I missed them as I had to work those nights.
Reply With Quote
  #10  
Old 22-12-2012, 11:09 AM
RickS's Avatar
RickS (Rick)
PI cult recruiter

RickS is offline
 
Join Date: Apr 2010
Location: Brisbane
Posts: 10,584
Very cool, Dave! I've never seen that captured before.
Reply With Quote
  #11  
Old 22-12-2012, 03:40 PM
naskies's Avatar
naskies (Dave)
Registered User

naskies is offline
 
Join Date: Jul 2011
Location: Brisbane
Posts: 1,865
Quote:
Originally Posted by RickS View Post
Very cool, Dave! I've never seen that captured before.
Thanks Rick! It was a surprise for me too. Many of the other brighter meteors I captured showed persistent trains too. If this bad weather keeps up, I'll have to post process them all...

Quote:
Originally Posted by ourkind View Post
Wow Dave that is brilliant, love the video! Thanks for sharing it. I missed them as I had to work those nights.
Thanks Carlos. I'm hooked on meteors now

Quote:
Originally Posted by John Hothersall View Post
Great decay of the meteor train caught, thats what I would have loved to get. Saw meteor tarin decays in the Leonids in 1998 fireballs and its amazing to see the shapes they fade into over a minute or two.

Cannot see the video atm - will try again later.
Thanks John! It's even easier to see the train as it moves against the sidereal motion of the stars in the video. Let me know if you have no luck watching it. Most modern web browsers can play it directly if you have a broadband internet connection, otherwise you might have to save it to disk and then use a video player such as VLC to play it.

Quote:
Originally Posted by Matt Wastell View Post
Hi Dave - super work - I did pick out a few satellites in the vid!
Thanks Matt! I've just assembled one hour of time lapse frames of Gemini in the hour leading up to dawn... the sky's littered with satellites! Hopefully I'll be able to post it soon.
Reply With Quote
  #12  
Old 22-12-2012, 04:15 PM
Larryp's Avatar
Larryp (Laurie)
Registered User

Larryp is offline
 
Join Date: Apr 2012
Location: Sydney
Posts: 5,244
Great video, Dave-captured superbly!
Reply With Quote
  #13  
Old 23-12-2012, 01:44 AM
John Hothersall's Avatar
John Hothersall
Registered User

John Hothersall is offline
 
Join Date: Apr 2007
Location: Thornlands, Brisbane.
Posts: 1,346
Wow, just seen the video and its so cool in motion like that especially on loop and such a strange spiral shape too.

John.
Reply With Quote
  #14  
Old 23-12-2012, 02:18 AM
bartman's Avatar
bartman (Bart)
1 of 7 of 9

bartman is offline
 
Join Date: Sep 2009
Location: Perth
Posts: 1,968
Wow!
well wicked captures there!
Bartman
Reply With Quote
  #15  
Old 23-12-2012, 10:06 PM
naskies's Avatar
naskies (Dave)
Registered User

naskies is offline
 
Join Date: Jul 2011
Location: Brisbane
Posts: 1,865
I've posted a composite of meteors and another video (including two different meteors with bright persistent trains) here in case anyone is interested:

http://www.iceinspace.com.au/forum/s...d.php?t=100975

Quote:
Originally Posted by Larryp View Post
Great video, Dave-captured superbly!
Thanks Larry!

Quote:
Originally Posted by John Hothersall View Post
Wow, just seen the video and its so cool in motion like that especially on loop and such a strange spiral shape too.
Thanks John! During my next meteor shower, I'll definitely have the Dob ready to point at the aftermath of fireballs. I do like the action from your video captures too - I may have to give that a go too.

Quote:
Originally Posted by bartman View Post
Wow!
well wicked captures there!
Thanks Bart!
Reply With Quote
  #16  
Old 26-12-2012, 12:51 PM
astronobob's Avatar
astronobob (Bob)
Casual Cosmos Capturer

astronobob is offline
 
Join Date: Jun 2010
Location: Gold Coast SE QLD
Posts: 4,469
Great work Dave, that Composite is amaizing & the Vid shows just how busy it was , , Awesome ! !
Reply With Quote
  #17  
Old 26-12-2012, 08:06 PM
naskies's Avatar
naskies (Dave)
Registered User

naskies is offline
 
Join Date: Jul 2011
Location: Brisbane
Posts: 1,865
Thanks Bob! See you at Leyburn in the future.
Reply With Quote
Reply

Bookmarks


Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off

Forum Jump


All times are GMT +10. The time is now 01:11 AM.

Powered by vBulletin Version 3.8.7 | Copyright ©2000 - 2025, Jelsoft Enterprises Ltd.
Advertisement
Bintel
Advertisement