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Registered Member #10
Joined: Thu Feb 02 2006, 09:45AM
Location: Bunbury, Australia
Posts: 1424
Actually it is a road train with the orange body outline lights up high, red tail lights lower and headlights lower. What I found interesting is the slight sine wave pattern on the lights. May be went over a bump or maybe just bouncing along a bit. I was trying to get some moon shots but I wasn't quick enough and there was traffic on the highway. Exposure was 15 seconds.
This pic is a car.
Peter
This is the next mystery photo. Not too hard. Is a gas involved and if so, what composition?
Registered Member #10
Joined: Thu Feb 02 2006, 09:45AM
Location: Bunbury, Australia
Posts: 1424
Yep, it was just an out of focus end-on spark shot which gave it a hazy plasma ball look. I had to step down the aperture to get all 3 inches in better focus.
Registered Member #10
Joined: Thu Feb 02 2006, 09:45AM
Location: Bunbury, Australia
Posts: 1424
I knew I should have posted this first before the other stuff. So why is it green? Why is it smeared and what is the significance ot the dark streak extending down from where the spark touches the top?
Registered Member #191
Joined: Fri Feb 17 2006, 02:01AM
Location: Esbjerg Denmark
Posts: 720
The rotating mirror never captured any photon from the top of the arc. postitioning error? the light from the arc was dragged downward by the mirror, hence the smear.
Green, humm...from auto white balance? or Fe ions in glass/lenses?
adn the pic with an orange line im guessing its a car passing by.
Registered Member #10
Joined: Thu Feb 02 2006, 09:45AM
Location: Bunbury, Australia
Posts: 1424
The green colour is the result of autoexposure and I presume, auto white balance from a purple spark on a black background. I can do better manually but it takes longer and consistency is different between pics.
The missing gap in the smear of light where the spark is out of the picture suggests to me that the smear is an artifact from the brightness of the first spark rather than persistent ionisation along the spark path. Perhaps an edge of mirror effect or camera issue.
And the photo with the blue spark like light? Even though it is coming from a breakout point on the toroid, it is actually a blue LED that I taped on for focusing reasons on my spark setup. I already had one set up with a battery and just grabbed that for convenience.
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Mystery Photos from TDU
