98 points amatheus 2 hours ago 68 comments
Kevin_Flynn 2 hours ago | parent
Makes perfect sense.
cperciva 2 hours ago | parent
This is less an "image of our satellite-choked night skies" and more "a completely mendacious image produced using Photoshop".
Kevin_Flynn 2 hours ago | parent
Surely an astronomer would have software for this that would produce a more accurate picture.
cperciva 1 hour ago | parent
misnome 1 hour ago | parent
Kevin_Flynn 12 minutes ago | parent
So, they would erase the stars, but only to create a satellite mask, generally speaking.
misnome 1 hour ago | parent
It then usually gives you an image of both the combined success, and an image of just those pixels that were rejected. So, this.
jpardoe 1 hour ago | parent
bix6 1 hour ago | parent
hparadiz 1 hour ago | parent
Aurornis 1 hour ago | parent
The misleading part is that readers don’t see that it’s provocative art until you carefully read the details. It’s presented like documentary evidence of what the problem looks like.
The photographer might not have intended it this way, but the writers of this post took advantage of that.
bix6 1 hour ago | parent
Aurornis 1 hour ago | parent
The misleading part is where he edited out the stars by hand.
> Much of the time was spent painstakingly erasing stars, to reveal the satellites.
The photographer wasn’t misleading. He made a cool photo. The headline is misleading.
happytoexplain 1 hour ago | parent
Aurornis 46 minutes ago | parent
> Much of the time was spent painstakingly erasing stars, to reveal the satellites.
These aren’t my words. It’s what the article says!
The final image appears to have a frame of stars added for effect, but they are dots rather than arcs because they’re from a single exposure. The satellite trails are a composite of all of the images, with the stars removed.
38295gksnf9588 1 hour ago | parent
happytoexplain 1 hour ago | parent
Even if I were to be as charitable as possible to your interpretation, "mendacious" is way too strong a word, and implies an unreasonable bitterness.
jebarker 1 hour ago | parent
Aurornis 1 hour ago | parent
The headline is the worst offender, saying that the skies are “choked” with satellites.
The headline is misleading. The photo alone is interesting with the right context.
wat10000 1 hour ago | parent
But the framing from others is terrible. "Who gave anyone permission do this?" Um, every single satellite ever launched has gone through government approvals. Sorry if you didn't start paying attention to the world of space flight until it ruined your attempt at photography, but that's on you.
bix6 1 hour ago | parent
boxed 1 hour ago | parent
Both can't be non-misleading right?
fooker 1 hour ago | parent
The purpose of stacking hundreds of photos is to get rid of noise and unwanted trails like this.
The effort involved here is to go out of your way to do the exact opposite, specifically make sure things that are in a single exposure show up in the stack.
ryandvm 33 minutes ago | parent
You stack photos to enhance clarity and remove noise. Your work is not "mendacious".
But what you are removing is still data - and as you can see, some people find it to be very interesting.
ImPostingOnHN 39 minutes ago | parent
In this case, it seems like a desired noise was selectively amplified above signal level to portray an artificially low signal-to-noise ratio, with the article concluding "look at all this noise!"
ryandvm 1 hour ago | parent
ktm5j 1 hour ago | parent
sega_sai 1 hour ago | parent
The image in the original post is not too far from what you get with an actual telescope.
anonymous_sorry 1 hour ago | parent
If so, do Starlink and others pay rent? Should they (to ensure efficient use of the resource)?
hagbard_c 1 hour ago | parent
Don't go there, it leads to nothing but more waste, abuse and corruption. If it becomes necessary there can be some form of arbitrage in how LEO is used, we're not there yet though. Maybe something like the auctions for bandwidth for mobile operators but again, where does the money go? If institutionalised it will just turn into another slush fund for whatever interests, many of them corrupt or nonsensical, to drain.
wat10000 1 hour ago | parent
HotGarbage 1 hour ago | parent
tetraodonpuffer 1 hour ago | parent
wat10000 1 hour ago | parent
tetraodonpuffer 1 hour ago | parent
jefftk 1 hour ago | parent
The photographer made a really neat picture, but Kottke is presenting it with a headline that suggests its something else, and generally not giving enough context (mostly just blockquotes).
happytoexplain 1 hour ago | parent
Aurornis 1 hour ago | parent
It would take 100X less effort to remove the satellites.
1e1a 1 hour ago | parent
Aurornis 1 hour ago | parent
> Much of the time was spent painstakingly erasing stars, to reveal the satellites.
Many more stars than satellites in every frame. Erasing a couple satellites at most is quick. Erasing every star in the sky and keeping a couple satellites is not.
StellarScience 32 minutes ago | parent
- Astronomers have automated software that anticipates each streak based on the space object catalog and automatically removes satellites from long-exposure wide field-of-view images.
- Those whose job is to track satellites and update the space object catalog have software that anticipates each star location based on star catalogs, and automatically removes stars so they can see where the satellites are.
happytoexplain 1 hour ago | parent
You're just pointing out that there are tools to automate this.
Aurornis 49 minutes ago | parent
It’s ironic because stars outnumber visible satellites by a lot, so exiting out the stars is a lot more work than the satellites.
safog 1 hour ago | parent
Go out tonight and just look at the sky for 5 mins and I'll guarantee you'll see a couple of satellites flying past.
As with a lot of other technologies, the genie is out of the bottle and I don't think we're putting him back there again, this is the future.
wat10000 1 hour ago | parent
Of all the things to be outraged over... satellites provide extremely valuable services and are pretty near harmless. There's the pollution from the launches, some uncertain concern over putting materials into the upper atmosphere when they reenter, and that's about it. The thing people complain about most is that they get in the way of photographs of the starts. Which is annoying, but also seems to be easily worked around, and is pretty small potatoes compared to planet-wide communications. Your neighbor operating a leaf blower with a dirty two-stroke engine is harming you more than these satellites are.
totetsu 1 hour ago | parent
codingconstable 1 hour ago | parent
adithyassekhar 1 hour ago | parent
bradgessler 55 minutes ago | parent
Satellites are only visible shortly after sunset and before sunrise, known as astronomical twilight.
If the images in the photograph upset you and you think our night sky is ruined, the thing that kills it the most is light pollution. Flood lights, parking lights, and street lights that don’t direct light down to the ground make viewing much worse than satellites for everybody.
It’s just as easy to capture incredible images of the night sky, even during astronomical twilight, with image processing. Here’s photos I’ve captured in my driveway in the SF Bay Area: https://bradgessler.github.io/observatory-blog/observations/
I captured said images with an Elixir software stack I installed on a Pi and hooked up to my telescope. It’s open-source at https://github.com/bradgessler/observatory for those who are interested. I hook Claude up to it and it runs observations for the night, processes images with deterministic tools, and publishes them as the night progresses.
lenkite 36 minutes ago | parent
nuccy 34 minutes ago | parent
happytoexplain 23 minutes ago | parent
Yes, terrestrial light pollution has been the number one problem since we invented electric lights, but satellites and terrestrial light pollution are both separate problems with different effects and different coverage. E.g. even though light pollution is much more harmful, you can escape it with a short drive, even if you live in a densely populated region. You can't escape the strings of satellites.
Separately: "Shortly after sunset" is a downplay. It can be hours. But in any case, it's the time when the vast majority of stargazers are looking at the stars (with their eyes).
phainopepla2 16 minutes ago | parent
arjie 44 minutes ago | parent
I remember thinking when I was a child how exciting the future was going to be. I had a bunch of these books talking about space and ships and stuff. Well, the future lived up to billing. We got there.
orangecat 37 minutes ago | parent