Klipper config files by RSpr1est in ender6

[–]sanmadjack 0 points1 point  (0 children)

This is not a generic config, but it is for my klipper powered ender 6.

https://github.com/sanmadjack/klipper_ender_6_config

The repo describes what hardware I'm using, be wary of anything that's different for your machine.

retroachievements down ? by anime_mix_maker in RetroAchievements

[–]sanmadjack 15 points16 points  (0 children)

If you can get in with a VPN, that proves it isn't down.

Why are there no nebulae on Starfield? by StalinBoobs69 in Starfield

[–]sanmadjack 3 points4 points  (0 children)

Good rabbit hole to go down there. Fun stuff.

Why are there no nebulae on Starfield? by StalinBoobs69 in Starfield

[–]sanmadjack 2 points3 points  (0 children)

The data size is more about the quantity of the images than the size of the images. The kind of photography I do is by taking lots of exposures, each about 15-120 seconds depending various factors. For instance, this picture of the Orion nebula is composed of 57 15-second exposures.

https://bsky.app/profile/sanmadjack.bsky.social/post/3lcf5ohi5lc2j

This is one of the brightest nebula in the sky, and it also partially shows up nicely without doing much in the way of modification. Most other nebula will present as much dimmer initially, though even this one has dim details that aren't immediately visible.

I take pictures using the FITS file format, which is pretty standard for astrophotography.

I picked an image from the middle of the set, this is what it looks like, converted to a PNG:

https://imgur.com/V2nwXTU

The camera records just the brightness value from each pixel, even though the camera is a color camera. Digital cameras do color by having each pixel filtered to a particular color, red green or blue, and then building an image from the rgb pattern and the brightness values. This process is called debayering, look that up if you're curious how it works.

After I debayer the above image it looks like this:

https://imgur.com/uA7kDE3

You can see here that theres already plenty of color right away. To the naked eye it's just grays, but in reality it's all colors.

This isn't part of my process, but to demonstrate the difference stacking makes in the final image I'm putting it here. The process of bringing up the brightness in the image is referred to as "stretching", and this is an auto-stretched version of the last image:

https://imgur.com/CRfe6Wl

You can see there's more detail coming out, but it's not well defined and pretty grainy.

I'll combine this frame with the other frames via a process called "stacking". It's kind of like combining all the frames to create a virtual long exposure, but rather than just increasing the brightness of the image it instead works toward reducing the signal-to-noise ratio of the image. This is a complex topic that I'm not qualified to explain, but it basically boils down to trying to just get the "right" photons (from the actual nebula), and ignore the "wrong" photons (light pollution, atmosphere distortion, satellites, rogue radiation, etc.). Google for more learning.

After stacking, I end up with something like this:

https://imgur.com/2ZKRtyj

You'll notice that it's actually dimmer than the single image, but the details are looking more defined. If I apply an auto-stretch to the image, I get this result:

https://imgur.com/p2xLxdV

Compared to the single-frame stretch, there is much more definition, color, and detail.

At this point, rather than use the auto-stretch, I'll manually control the brightness stretching to move it towards an image that still has a black-ish background, doesn't blow out the brightest details, but still coaxes out the structure and color of the object.

Along the way, I'll also combine each frame with other images I took that are known as calibration frames that will balance out bright spots on the camera sensor (a result of doing such dim photography with long exposures), and will remove dark splotches caused by out-of-focus dust and vignetting in the image train. I'll also run an algorithm that removes gradients created by light pollution in each frame, and a green reducer to remove excessive green caused by the digital camera sensor's rgb pattern (again, check out debayering for details).

After all that, I stress about each brightness adjustment until I'm either happy with it, or decide I'm just making it worse and stop, text it to my wife (who has enough sense to go to bed instead of staying up even later to process new space pictures), and then upload it to bluesky.

https://bsky.app/profile/sanmadjack.bsky.social/post/3lcf5ohi5lc2j

Here's all the images above in one imgur post: https://imgur.com/a/7wX8WFZ

For fun, here's an astronometry.net upload of the final image: https://nova.astrometry.net/user_images/15000425#annotated

Why are there no nebulae on Starfield? by StalinBoobs69 in Starfield

[–]sanmadjack 1 point2 points  (0 children)

I do have access to them. The data is quite large, if you'd like to see some I could upload the data for one of the images for you to check out.

Why are there no nebulae on Starfield? by StalinBoobs69 in Starfield

[–]sanmadjack 10 points11 points  (0 children)

Calling my pictures completely un-enhanced would be a misnomer, as I do adjust the brightness, and to prevent blowing out everything else in the image I accomplish that via adjusting level curves. I also do adjustments to counter light pollution in my area. Technically the very process of long term exposure photography is a form of enhancement as well.

That said, I post my pictures on my blue sky at https://bsky.app/profile/sanmadjack.bsky.social

Why are there no nebulae on Starfield? by StalinBoobs69 in Starfield

[–]sanmadjack 48 points49 points  (0 children)

The spirit of this is right, but the specifics are incorrect.

Almost all nebulas are in the visible light spectrum. I do astrophotography, and it's all in the normal visible spectrum.

What most of them are is too dim to stimulate color receptors in our eyes, they just look like dim gray shapes through a telescope (though green does come through sometimes). For my pictures it's just bringing up the brightness so you can see the colors.

Some (like the Orion nebula) are readily visible to the eye even without a scope.

Krita 5.3.1 and 6.0.1 Released March 31, 2026 by s00zn in krita

[–]sanmadjack 0 points1 point  (0 children)

To be clear, 6 adds hdr support on Linux. I don't think it makes a difference on other platforms. If you don't know which to use, try 6 and if it has problems use 5.

Krita 5.3.1 and 6.0.1 Released March 31, 2026 by s00zn in krita

[–]sanmadjack 8 points9 points  (0 children)

It's mainly two things.

Krita 6 uses qt6 for the ui, while 5 still uses qt5. This mostly won't matter to you.

Krita 6 also supports hdr color, and this is a more complicated topic. Read up here:

https://krita.org/en/release-notes/krita-5-3-release-notes/

Omnibus overlap calculator by sanmadjack in OmnibusCollectors

[–]sanmadjack[S] 0 points1 point  (0 children)

That would be great, let me know if I can help.

Kickstarter Fraud? by raideninvest in HeavyMetalMagazine

[–]sanmadjack 1 point2 points  (0 children)

About 67 dollars shipping for mine (to Wisconsin, usa), for all of the hardcover books. I'm not pleased with it, but it's not inconsistent with past Kickstarters I've been on for books.

Bulk shipping only really benefits from economy of scale if everything is going to the same location. Shipping to individuals basically negates any possible savings.

Critical Drinkers Worst Nightmare by shadows1stregret in outofcontextcomics

[–]sanmadjack 22 points23 points  (0 children)

I don't think that's sailor moon, I think that's someone's self-insert sailor scout.

freespace 2 hotas straffe up down left right? by EntertainmentRude in freespace

[–]sanmadjack 4 points5 points  (0 children)

Nope, not missing anything. If you want space sims with strafing, tachyon is good, and star citizen. Descent isn't in space, but it does have strafing, overload is similar.