𝙹𝚘𝚞𝚛𝚗𝚊𝚕 𝚘𝚏 𝚁𝚊𝚛𝚎 𝙴𝚊𝚛𝚝𝚑𝚜

but it's about exploring the multiverse.

The new-to-me furnace arrived today! The heating elements were shipped separately to prevent damage. I'll install them tomorrow.

You know it gets hot when the alumina tube starts to droop!

Boopin' snoots

In preparation for new experiments with special glass compositions I wanted to try proper annealing of the samples. Both tests were poured on graphite preheated to 500°C and then slowly cooled over 3h. The batches need a bit more time or higher temperatures in the furnace to get rid of the bubbles.
By total coincidence I just bought a new furnace that can reach 1500°C. That will hopefully open the door to more interesting glasses!

Managed to record video at 775fps with 1ms of exposure time!

It's slowed down by a factor of 31 to a framerate of 25fps.

The 2 seconds of recorded time stretch to 62 seconds and the LED blinking at 31Hz slows down to 1Hz.

Managed to record video at 800fps with 1ms of exposure time!

It's slowed down by a factor of 32 to a framerate of 25fps.

The 2 seconds of recorded time stretch to 64 seconds!

I found an old revision of the sensor datasheet that has a table of the required register uploads.

Now the image looks a lot better!

Let's see if I can squeeze the full 815fps out of the sensor...

Hivemind to the rescue!

I've got two NOIP1SN0300A (aka Python 300) sensor from OnSemi and they both have this fixed noise pattern in the image. It's not in the test pattern, so I suspect something in the analog config.

The full description of the registers is only available with an NDA, but I found a driver on GitHub that has the initialization sequences (albeit without much explanation.)

Does anyone have more information on that sensor or maybe even access to the documentation?

@janamarie I think we talked about that a long while ago, but I cannot find the thread. Maybe it was still back on Twitter?

I finally had the opportunity to test an idea: Use a linear CCD-array and the motion of a train to capture an image.

And yes, the images aren't very good as the setup was very improvised. My ModularCamera held in one hand, taking "screenshots" with my phone in the other hand. BUT it proves that it works! And it also made clear that you need quite the fast readout speeds to not get very squished images at normal ICE speeds.

The longer I'm looking at the pictures, the more I like them...

The sunset afterwards was also very nice and we saw some really pretty meteors.

But the small crescent of sun still managed to overexpose even at 1/8000!

Shortly after maximum eclipse the brightness was low enough to remove the filter from the camera.

Yesterday I went to a field with some friends to view the eclipse and the Perseids. We had a lot of fun and I took some photos🧵

(Sony a6000, 1000mm, f/10, 1/320)

RE: https://chaos.social/@gigabecquerel/116912747159089825

If you want to see my ModularCamera(s) in person, come by at MakerFaire Hannover!

The waveform monitor in picture mode, we didn't test much else.

The other unit doesn't turn on, only a neon indicator lamp in the PSU lights up.

If you only want the working unit, that's also an option.

Anyone interested in a Tektronix 1765 Waveform Vector Monitor (working) and a Tektronix WFM 601M Serial Component Monitor (not working, but might be fixable) in a 19" enclosure.

Edit: The device has found a new home!

The moon, the window and the camera all lined up perfectly for some armchair astronomy right from the living room.

(I'll add a photo off the camera tomorrow as it is already past 1 a.m.)

"The trail became thicker, overgrown by smaller red and purple plantlike forms, phytids, filling in between the arborids. I lost my way and had to listen for the sound of the river to orient myself."

Since I saw the first IR photos in my timeline a few weeks ago, I felt like I had seen or imagined something similar in the past. And now I finally remembered! In Greg Bear's 1995 book "Legacy" he describes a world where the flora and fauna is colored in red and purple hues.