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Re: High speed Tesla spark photographs - Terry's Now ;-)
Original poster: Vardan <vardan01@xxxxxxxxxxxxxxxxxxxxxxx>
Hi Peter,
At 10:31 PM 9/18/2006, you wrote:
Great pics for first light,
Actually it was the "sixth" run ;-))
Terry even if you people do things upside down compared to here in
Australia (the time axis is going up).
I had to modify the calibrator to figure that out. My mind could not
do it by just looking... To many spinning mirrors and inversions
&:-)) The new calibrator is cool. I will write up the schematic...
The camera is the limitation here even despite your SISG having
brighter sparks.
Yep!! I am seeing the wire conductor traces on the sensor
chip... Olympus just came out with a nice new cam in my range...
You have a larger field than me which will also reduce the available light.
I am not sure how that function works... I tried reducing the field
but the light stayed the same.... The optical lens seems to give
constant light regardless of the zoom... But that lens has a "small"
shutter compared to say a film camera... Some of my old film cameras
had a real low F-stop... I threw all that stuff to my niece and she
has probably pawned it by now for 10X what it is worth "now a days"....
The 100kHz LED works well and fortunately the 4 images don't overlap
otherwise you wouldn't see anything. Given your machining
tolerances, I guess this is a difference due to epoxy thickness.
That is about 0.3 degrees. The epoxy was certainly that. I also
might have "slightly bent" the 1/8 inch motor shaft at 4000 pounds
press "plus" a 'hammer' >:-))) I wanted to be sure it would not come
off at 30000 RPM :o))) I counter drilled the block incase I ever had
to pound it out.... But I don't think that is an option ;-)))
How long are the sparks?
23 inches.
I look forward to closer pics with better detail. I will look at 40M
file as well.
I'll see what I can figure out about a more sensitive camera. I
wonder what is the best "fast" "low light" camera?? Astronomy folks
have "cool" ones, but no optics included... All for telescopes
instead of Tesla coils...
I am thinking going to the little research SISG coil will shorter
sparks, I can get in far closer for more light...
Cheers,
Terry
Cheers
Peter
http://tesladownunder.com
----- Original Message ----- From: "Tesla list" <tesla@xxxxxxxxxx>
To: <tesla@xxxxxxxxxx>
Sent: Tuesday, September 19, 2006 10:15 AM
Subject: High speed Tesla spark photographs - Terry's Now ;-)
Original poster: Vardan <vardan01@xxxxxxxxxxxxxxxxxxxxxxx>
Hi All,
It works!!
http://drsstc.com/~piranha/PIRANHA/pictures/Image6a-good.jpg
http://drsstc.com/~piranha/PIRANHA/pictures/Image8a-good.jpg
Here are the setup details before I forget them ;-)
Zoom - To fit the image nicely to the picture. Does not seem to
affect light gathering. Optical zoom only as opposed to stupid software zoom.
.....