Ultra high speed photography


PDA






amateurtje
May 14, 2012, 06:18 PM
I built myself a very fast flash (less than a millionth of a second) and took it to a friend's shooting range to try it out:

Detailed info : click here (http://www.njnoordhoek.com/?p=735).

http://www.njnoordhoek.com/wordpress/wp-content/uploads/2012/01/Smith_and_Wesson900pix.jpg
http://www.njnoordhoek.com/wordpress/wp-content/uploads/2011/10/Magnum45_900pix.jpg
http://www.njnoordhoek.com/wordpress/wp-content/uploads/2011/10/AR15_playing_card2_900pix.jpg
http://www.njnoordhoek.com/wordpress/wp-content/uploads/2011/10/pencils2_900pix.jpg
http://www.njnoordhoek.com/wordpress/wp-content/uploads/2012/05/pencils_900pix.jpg
http://www.njnoordhoek.com/wordpress/wp-content/uploads/2012/05/AR15-just-out-of-barrel-900pix.jpg
http://www.njnoordhoek.com/wordpress/wp-content/uploads/2012/05/DSC_5495-JUST-EXITING-2-900pix.jpg



it works.

If you enjoyed reading about "Ultra high speed photography" here in TheHighRoad.org archive, you'll LOVE our community. Come join TheHighRoad.org today for the full version!
Rail Driver
May 14, 2012, 06:23 PM
That's more than awesome - I'd love to see more!

Cascade1911
May 14, 2012, 06:24 PM
^^^ What rail driver said and maybe some info on equipment used. Very cool.

Nushif
May 14, 2012, 06:25 PM
Oh snap. Love those pics of the revolver.

CharlieDeltaJuliet
May 14, 2012, 06:36 PM
Awesome

RedAlert
May 14, 2012, 06:41 PM
Spectacular! What did you use to trigger the flash???

amateurtje
May 14, 2012, 06:48 PM
The flash has a microphone and a microprocessor with a freely selectable delay.

amateurtje
May 14, 2012, 06:52 PM
quote: "^^^ What rail driver said and maybe some info on equipment used. Very cool."

See this link (http://www.njnoordhoek.com/?p=735) for more info on the setup.

Dnaltrop
May 14, 2012, 06:53 PM
Very nicely done... Insane little flash unit you have there... Weapon in it's own right.

What was the project cost between the piezo Mic, timer, and Flash unit?

Welcome to THR!

amateurtje
May 14, 2012, 06:59 PM
The total cost was about 100 Euro's or 128$ in todays exchange rate. And about 3 weeks of evening hours from breadboard to first day on the shooting range.

Telekinesis
May 14, 2012, 07:39 PM
The total cost was about 100 Euro's or 128$ in todays exchange rate. And about 3 weeks of evening hours from breadboard to first day on the shooting range.

I think I found my next project!

Might want to move the AR's flash hider just a few inches back so its not in the shot next time, it would make you look like a better shot ;) But on the other hand, I do think the gasses escaping look pretty good. I'm not sure where you are in Europe, but is there any chance of getting a few shots of a bullet coming out of a suppressor? I'd be interested to see what the gasses look like...

amateurtje
May 14, 2012, 07:50 PM
Voila (or do you mean a silencer?). Also note the shock wave that is visible (dark ring).

http://www.njnoordhoek.com/wordpress/wp-content/uploads/2012/05/AR15-just-out-of-barrel-900pix.jpg

Telekinesis
May 14, 2012, 07:58 PM
Oh wow, I was thinking a sound suppressor/silencer, but that is a really nice pic! Kinda surprising how far the shock wave is from the bullet. I thought it would have been closer. Are these subsonic or supersonic 9mm?

amateurtje
May 14, 2012, 08:04 PM
It was 9mm converted AR15 and I had the impression that it was subsonic (distance muzzle-bullet was smaller than disctance muzzle-microphone with 0 delay).

Telekinesis
May 14, 2012, 08:23 PM
That makes sense, must be 147gr or 158gr then. A 115gr or 124gr would have been supersonic.

This definitely seems like a fun project. A little daunting with the whole "kill yourself accidentally discharging the capacitor" thing, but the precautions to protect against that aren't too difficult. Time to find a young and impressionable college intern who doesn't mind doing dangerous and possibly deadly work for little or no return! Oh wait, that's me... :D

RichDal
May 14, 2012, 08:41 PM
Wild photos, thanks for posting those. Sounds like an interesting project.

larryh1108
May 14, 2012, 10:28 PM
WoW, just Wow.

Texan Scott
May 14, 2012, 10:33 PM
Niiiiiicccce.

fireman 9731
May 14, 2012, 11:22 PM
Thats amazing. I want to see more!

Tim the student
May 15, 2012, 02:57 AM
Very cool. I think the pencils are my favorite.

JSpear
May 15, 2012, 03:36 AM
Wow, I know it's been said before but wow, just freaking awesome pics!!!

hang fire
May 15, 2012, 04:34 AM
I have been to three dog fights and two county fairs but never have seen such.

Neato and well done.

OARNGESI
May 15, 2012, 04:38 AM
great shots

doubleh
May 15, 2012, 10:17 AM
That is great. I would like to see more also.

danweasel
May 15, 2012, 11:26 AM
So good.

Oh so good.

newbuckeye
May 15, 2012, 11:41 AM
The revolver pics are really cool!

Dr T
May 15, 2012, 11:43 AM
Wonderful.

What was the Camera and film speed (or digital equivalent)? I have often wondered about the sensitivity of the imaging plane.

If this was film, what film did you use?

Owen Sparks
May 15, 2012, 11:50 AM
Notice the tiny fragments of lead in the picture of the pellet leaving the barrel of the air rifle.

Arkansas Paul
May 15, 2012, 11:52 AM
That is extremely cool. I think the first pic is my favorite. Awesome!

amateurtje
May 15, 2012, 02:18 PM
Wonderful.

What was the Camera and film speed (or digital equivalent)? I have often wondered about the sensitivity of the imaging plane.

If this was film, what film did you use?
Typically iso 800 f5.6 at 10 feet
Using a nikon d90 (aps c sized sensor)

Deanimator
May 15, 2012, 02:25 PM
Are the plans for the triggering mechanism on the web?

Agsalaska
May 15, 2012, 02:27 PM
Wow. Beyond awesome.

amateurtje
May 15, 2012, 02:36 PM
Are the plans for the triggering mechanism on the web?
Triggering is not unlike: http://www.arduino.cc/en/Tutorial/KnockSensor

erkman
May 15, 2012, 05:23 PM
Those are some awesome pics!

Centurian22
May 15, 2012, 05:51 PM
Awesome!! Can't wait to see more and read about the project. I would love to set something like this up!!!

amateurtje
May 15, 2012, 06:03 PM
Awesome!! Can't wait to see more and read about the project. I would love to set something like this up!!!
See this link (http://www.njnoordhoek.com/?p=790) for all details on the setup.

scallop
May 16, 2012, 12:09 AM
As I am suffering from a dearth of imagination and cleverness I will add my WOW!! and AWESOME! to the mix. Great job, some of the best pix I have ever seen.

Friendly, Don't Fire!
May 16, 2012, 12:22 AM
I knew it was theoretically possible, however, I never took the time to set everything up to try it.

I was going to use an electronic "trigger" by placing two wires each clipped to a sheet of aluminum foil. Then, put a piece of waxed paper between the aluminum foil and shoot through the layers, in hopes that the projectile will make the two sandwiched sheets make contact with one another.

I like your microphone (adjustible) better.

elora
May 16, 2012, 03:25 AM
Amazing Post. Very cool and interesting. Waiting for more such cool Ultra high speed photography .

Inebriated
May 16, 2012, 04:12 AM
That's amazing man! Is that their largest size? I'd love the colored pencils pic as my desktop, if you've got a larger version!

amateurtje
May 16, 2012, 02:55 PM
That's amazing man! Is that their largest size? I'd love the colored pencils pic as my desktop, if you've got a larger version!
Here is a 3 megapixel version (2048x1360). The original is 12 megapixel and covers the same view.
All pencils were hit. so the bullet tip is actually inside the yellow pencil already:

http://www.njnoordhoek.com/wordpress/wp-content/uploads/2012/05/pencils-3MPix.jpg

All pencils were hit (so the bullet is acutally inside the yellow pencil).
We used the remains for a second, but poorly focussed and timed shot (where is my green pencil!?):

http://www.njnoordhoek.com/wordpress/wp-content/uploads/2012/05/pencils_900pix.jpg

Inebriated
May 16, 2012, 02:56 PM
Thank you very much!

Centurian22
May 17, 2012, 06:25 AM
The shock wave on that last picture is still awesome, for a 'messed up' picture.

amateurtje
May 17, 2012, 08:02 AM
I think it is mainly gunsmoke, since the muzzle was quite close, but it still shows the bullet is coming in at a very high speed.

buckhorn_cortez
May 17, 2012, 12:34 PM
You might want to try setting up the flash to make the bullet cast a shadow on a plain background. The shadow graph will show the shock waves being pushed by the nose and base of the bullet. Worked for EG&G and took a summer course at MIT from Harold Edgerton in high speed photography - the shadow graph was one of the first projects we had to do.

amateurtje
May 17, 2012, 02:44 PM
Did you use a special point source flash?

If you enjoyed reading about "Ultra high speed photography" here in TheHighRoad.org archive, you'll LOVE our community. Come join TheHighRoad.org today for the full version!