I think there’s a couple new images. I’ll upload an updated one some time.
That said yes there is something about earths orbit. There’s a few month window that gives the best observation of this star. We time the observations to be roughly June- November most years.
As responded above, they were persistent diffraction errors in the primary mirror phasing. Think of it like those diffraction spikes from Hubble. Indeed the video is almost entirely “fabricated” by motion smoothing and…
Good spot! It’s an error in the primary mirror segment phasing. The observatory has to phase the mirror segments periodically, and it’s a bit of an art as well as a science. For a while, something was happening with…
They probably have moons. But I doubt they’re outshining other planets — other planets on the same orbit would be unstable, and most likely be ejected from the system very quickly. The system is about fifty million…
The main reason, is why bother? We know there’s four planets, we know they orbit according to Keplers laws, we know how bright they are. The public outreach is reasonably well handled by this motion smoothed video.…
Yeah each photo is one - five nights of work full time from 3-5 people.
Not stellar activity — a flare wouldn’t be visible on this scale of image. The main concerns are the observatory —- how aligned all the many dozens of optics are — and the earths atmosphere on the nights the target was…
In 2017 we captured five nights worth of images and averaged them. Some early years only had one night. Around 2019 we also figured out some better observing strategies— all the later data is taken without a…
That’s right. We only have images take every year or so, so I did a motion interpolation between the images using Keplers laws. Diffraction close in gets pulled around by the interpolation.
Not to self-plug, but here's my video of the same four planets: https://sefffal.github.io/images/orbital-animation.mp4 The creator of the GIF above used a data from a range of different telescopes and wavelengths,…
This is maybe not the place, but we did some apples to apples comparisons between PyMC, Dynesty, and the Julia Turing.jl package. A little to my surprise, despite being a Julia fan, Turing really outperformed both the…
I visited the Large binocular telescope just a month or two ago. A very impressive facility, and one can only imagine the image quality if they were captured using both mirrors coherently.
That doesn’t seem to match what I understood from the article. At one point they say explicitly that it will enable brighter displays.
My understanding is that the AO system for GMT is going to pose quite a challenge. A big topic of ongoing research is dealing with “petaling” where the separate primary mirrors in phase due to the atmosphere. For…
There’s a bit more to it than that. GMT is further along but its design has many compromises versus TMT. Also, a second ELT in the southern hemisphere is less useful than one in both Hemispheres. The situation for TMT…
Worth mentioning that essentially all professional astronomers / astrophysicists consider this person a grifter. It’s amazing that he keeps getting so much press though, would love to learn his secret.
Yes exactly. Which means it's extremely, extremely low. Even though the probably of a meteorite hitting somewhere is high, the probability of hitting somewhere in particular is tiny.
I’m using this from Julia and both the user and developer experience is great. It’s much more limited than publication style plotting libraries but the instant 60fps reactivity is amazing.
#3 spot at atmospheric pressure
Coming from matplotlib, I found Makie such a breath of fresh air. The API is just as (if not more) flexible but way more predictable. Their layout system in particular is amazing. I think it bundles it's own constraint…
As has been pointed out elsewhere, this is the first image of our galaxy in something other than light (radio, infrared, x rays, gamma rays are all photons).
Would you mind explaining this further? Since sound is literally pressure waves, I don't understand how reducing sound can still leave "sound pressure".
This is not a “nature publication” in the common sense. It’s in their commentary section.
This is true but the poster above doesn’t mean Monte Carlo integration. Rather, testing those methods on simulations from generative models.
I think there’s a couple new images. I’ll upload an updated one some time.
That said yes there is something about earths orbit. There’s a few month window that gives the best observation of this star. We time the observations to be roughly June- November most years.
As responded above, they were persistent diffraction errors in the primary mirror phasing. Think of it like those diffraction spikes from Hubble. Indeed the video is almost entirely “fabricated” by motion smoothing and…
Good spot! It’s an error in the primary mirror segment phasing. The observatory has to phase the mirror segments periodically, and it’s a bit of an art as well as a science. For a while, something was happening with…
They probably have moons. But I doubt they’re outshining other planets — other planets on the same orbit would be unstable, and most likely be ejected from the system very quickly. The system is about fifty million…
The main reason, is why bother? We know there’s four planets, we know they orbit according to Keplers laws, we know how bright they are. The public outreach is reasonably well handled by this motion smoothed video.…
Yeah each photo is one - five nights of work full time from 3-5 people.
Not stellar activity — a flare wouldn’t be visible on this scale of image. The main concerns are the observatory —- how aligned all the many dozens of optics are — and the earths atmosphere on the nights the target was…
In 2017 we captured five nights worth of images and averaged them. Some early years only had one night. Around 2019 we also figured out some better observing strategies— all the later data is taken without a…
That’s right. We only have images take every year or so, so I did a motion interpolation between the images using Keplers laws. Diffraction close in gets pulled around by the interpolation.
Not to self-plug, but here's my video of the same four planets: https://sefffal.github.io/images/orbital-animation.mp4 The creator of the GIF above used a data from a range of different telescopes and wavelengths,…
This is maybe not the place, but we did some apples to apples comparisons between PyMC, Dynesty, and the Julia Turing.jl package. A little to my surprise, despite being a Julia fan, Turing really outperformed both the…
I visited the Large binocular telescope just a month or two ago. A very impressive facility, and one can only imagine the image quality if they were captured using both mirrors coherently.
That doesn’t seem to match what I understood from the article. At one point they say explicitly that it will enable brighter displays.
My understanding is that the AO system for GMT is going to pose quite a challenge. A big topic of ongoing research is dealing with “petaling” where the separate primary mirrors in phase due to the atmosphere. For…
There’s a bit more to it than that. GMT is further along but its design has many compromises versus TMT. Also, a second ELT in the southern hemisphere is less useful than one in both Hemispheres. The situation for TMT…
Worth mentioning that essentially all professional astronomers / astrophysicists consider this person a grifter. It’s amazing that he keeps getting so much press though, would love to learn his secret.
Yes exactly. Which means it's extremely, extremely low. Even though the probably of a meteorite hitting somewhere is high, the probability of hitting somewhere in particular is tiny.
I’m using this from Julia and both the user and developer experience is great. It’s much more limited than publication style plotting libraries but the instant 60fps reactivity is amazing.
#3 spot at atmospheric pressure
Coming from matplotlib, I found Makie such a breath of fresh air. The API is just as (if not more) flexible but way more predictable. Their layout system in particular is amazing. I think it bundles it's own constraint…
As has been pointed out elsewhere, this is the first image of our galaxy in something other than light (radio, infrared, x rays, gamma rays are all photons).
Would you mind explaining this further? Since sound is literally pressure waves, I don't understand how reducing sound can still leave "sound pressure".
This is not a “nature publication” in the common sense. It’s in their commentary section.
This is true but the poster above doesn’t mean Monte Carlo integration. Rather, testing those methods on simulations from generative models.