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Messages - CS223

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Chronos User Discussion / Re: Seeing a pellet in flight
« on: March 24, 2021, 08:23:06 AM »
Looks good for the first go at it. Remember, light, light and more light. And you can set a custom resolution as well to get the frame rate up while constraining the image area.

Peltier modules are voltage specific from what I recall and need to have decent regulation. So in that regard I would use a PWM circuit, or try anyway, in order to control the cooling level of the module. At least on an experimental basis. On a design basis, I would use a thermostat with feedback similar to how a heated crystal oscillator works so as to keep the imager temperature consistent regardless of the environment. You would want something along the lines of a PID controller as opposed to a slam-bang thermostat. Another option might be a heat pipe on the imager with a Peltier module on the other end if module space is an issue.

Chronos User Discussion / Re: Sales Thread
« on: January 28, 2021, 05:22:14 AM »
Just list it here, thatís how I was able to purchase mine. You can try eBay but they take a hefty cut and the scammers are really bad on tech items.

Chronos User Discussion / Re: Custom Color Matrix
« on: December 08, 2020, 05:17:52 AM »
I've tinkered with the settings to see what effect they had but didnít learn much from messing with them. I assume you have a grey color balance reference. If not they are cheap on Amazon I use this one

 In regards to color balancing as a pro, you need a video waveform monitor & vector scope plus a set of Ďchip chartsí Grayscale & color. Your shoot these under your lighting. For the grayscale you look at the waveform monitor and minimize the chrominance on the steps using color adjustments. For color balance you look at the color chart and adjust your color balance & luminance so that the vectors hit all of their boxes. At least thatís how it is done in the days of NTSC broadcast TV. Not sure in the digital world these days.

Chronos User Discussion / Re: Post Chronos 2.1 clips here!
« on: November 13, 2020, 04:10:50 PM »
Nice stuff here!

Yet another free-fall-follow-focus clip.

Like Hans Gruber falling from Nakatomi Plaza.  ;D

Peltier module coupled to the heat sink  8) ?

Chronos User Discussion / Re: Chronos 1.4 Footage Thread
« on: October 15, 2020, 03:13:49 PM »
Luke, I tried both from your tweet and directly from your youtube channel and no luck on the sparkler video.

Chronos User Discussion / Re: Chronos 1.4 Footage Thread
« on: October 07, 2020, 07:21:40 PM »
It certainly shows that there is no such thing as a bad shot when shooting with a high speed camera.
What video editing software was used?

Chronos User Discussion / Re: Chronos 1.4 Footage Thread
« on: September 16, 2020, 09:00:19 AM »
Nice. It would be interesting to see the higher speed 40kfps upscaled. Curious what effect it would have on resolution.

General high-speed discussion / Re: Lights on the go
« on: September 11, 2020, 01:29:34 PM »
I bought a couple of these Stratus LED units with the reflector. I havenít put them through their paces yet but they are a reasonably cost effective solution if you donít mind making your own mounts to hold them.

Software Dev / Re: Chronos V0.5.0 Full Release
« on: August 13, 2020, 11:04:45 AM »
Saw the tweet about the minor update but nothing pertaining to what the update was about.

Not sure without trying it but you might be able to go into the Custom Color Matrix menu and alter settings there. Otherwise software strip the color.

Software Dev / Re: Chronos V0.5.0 Full Release
« on: July 15, 2020, 07:29:43 AM »
Could you keep the link to the builds in the original posts when posting new updates? ;) It makes it easier to keep track of things for those of us who are still using Balena Etcher to update.

Software Dev / Re: Chronos V0.5.0 Full Release
« on: June 18, 2020, 09:11:50 PM »
Any time frame on enabling the audio trigger for things like gun shots etc?

Chronos User Discussion / Re: Chronos 1.4 Footage Thread
« on: June 15, 2020, 05:06:13 AM »
It did some new stuff with up to 40.000 fps. What a shame that there's no 100.000 fps option anymore :(

By the way: I don't know why (maybe the new software?) but the image quality looks like it suffered a lot in comparison with my older videos.
at 20.000 fps I got again some strange maze like artifacts :( I don't know why this happens...

Look at around 5:30 ... it looks like there's a veil in front of the picture and the object just rarely shines through.

Is that a speed booster that you install first on the cam or just a lens adapter?

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