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Also found a satellite in the image.

Location: Beijing
Time: 2024 Jun 16 01:24 UTC+8

By using the pixel merge feature provided by the hardware (instead of using software when pre-processing), the image quality is much better, aka less noise. Today I have no issues when blowing up the saturation slider, and this time there is no noise. Yesterday I couldn't move the saturation slider at all, since even a slight increase, it shows a bunch of noise and makes the image look terrible.

With 4 pixels merged into 1, I got 3.9 μm per pixel, which allows me to bump up the exposure time to 20s. However, I also tested the ISO settings, which show a better result in ISO 1600, compared to ISO 800. However, thanks to the light pollution, 15S with ISO 800 is on the edge of overexposure. So I didn't stick with higher ISO.

However, yesterday night was cloudy, and I'm too lazy to pick the picture one by one. So I dump them all into the software, and thanks to the cloud, now stars are not pinpoints anymore.

Why will the author think HTML and JS are magic? I thought Haskell and Lisp were.

This is a good one, considering I didn't aim for anything interesting but just a random area of night sky where no trees or buildings are blocking the view. I mean, it's pretty random.

You can actually tell the Lyra (Fig 2) and the Sagitta (Fig 3).

And all of this, is shoot on an action camera, costs only 350 USD. Wow, I'm deeply amazed.

BTW I'm using Sequator for stacking, looks like it can handle the lens aberration pretty good.

Tried to stacking some night sky photos...

It looks like DeepSkyStacker is not capable of handling image produced by non-professional gear, I mean the action camera.

I spend a good amount of time calculating the NPF rule for my Insta360 Ace Pro, and trying to figure out how to do the aberration correction. And the result is... I would say not very ideal, when following the tutorial from here: youtube.com/watch?v=iuMZG-SyDC

Maybe I should write my own software to do the aligning and stacking?

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Also I have a hard time distinguishing if a point is a star or just dust on my monitor...

Instead of changing the sound for the alarm, I would prefer a way to change the way to dismiss alarm. Since for now, I can dismiss alarm without actually waking up. That's why today, I was waking up late.

I said I will save money in this month. And I will not buy an equatorial mount for just an action camera...

...hopefully

wait a minute...

This Manga can be purchased on Google play?

Waht?

Can't believe japanese people will use YouTube to boardcast anime.

Recently I finished watching Miss Kobayashi's Dragon Maid, and I have to say, it's really good. I think it's more or less like Nichijou. Nothing fancy or dramatic, just normal daily life, with dragons.

And I felt a little bit lost after finished this anime. So naturally, I tried to search the original work, like novel, books, manga, etc. And I found out even the publisher in Taiwan didn't follow up the progress.

Yes, the manga has started since 2013 May and now is still actively updating. I'd say that's better than most open source projects XD

Anyway, since the publisher didn't follow up the progress, I think all I left is learn Japanese, fly to Japan and buy the manga. Probably will take me several years to learn Japanese for manga reading, but I'll re-toot this toot when I do this in the future.

Read books, step 1: put them around me and hopefully one day in the future I'll start read them.

Weirdly, my system froze again.

The good news is that, this time is not caused by hard drive. However, the bad news is I don't know who caused it.

The dmesg said there is nothing wrong with the system and I can check the message after reboot. The only clue is that I switched from the browser back to IDEA, and everything froze and the gnome stops responding. Mouse doesn't move, no response from keyboard, and I tried REISUB and looks like some of the sysrq are disabled.

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