@euserwg.bsky.social
It is only with this post that I have realized what “TaxRaptor” means. I didn’t realize that “tax” wasn’t just a name.
November 6, 2025 at 10:24 PM
It is only with this post that I have realized what “TaxRaptor” means. I didn’t realize that “tax” wasn’t just a name.
Another example of the great work TESS enables (60% of it is either tangentially or completely unrelated to exoplanets. Extended missions tend to be like this; see NICER for another example of a space telescope whose publications don’t reflect its name too well.)
October 21, 2025 at 1:27 AM
Another example of the great work TESS enables (60% of it is either tangentially or completely unrelated to exoplanets. Extended missions tend to be like this; see NICER for another example of a space telescope whose publications don’t reflect its name too well.)
Well, at least the schematics have degrees labeled. :}(whatever emotion that is supposed to be is what I mean to convey)
September 16, 2025 at 11:59 PM
Well, at least the schematics have degrees labeled. :}(whatever emotion that is supposed to be is what I mean to convey)
Are you aware of this method (it might help with overexposed areas) bsky.app/profile/stim...
The overexposed area can be recovered by going down to the l1b products. They contain the individual frame groups that make up a JWST integration which is part of one exposure...
The paper used only the first groups which weren't overexposed.
mast.stsci.edu/portal/Mashu...
NASA/ESA/CSA/STScI
The paper used only the first groups which weren't overexposed.
mast.stsci.edu/portal/Mashu...
NASA/ESA/CSA/STScI
August 20, 2025 at 2:33 PM
Are you aware of this method (it might help with overexposed areas) bsky.app/profile/stim...
This isn’t documented explicitly, but it’s clear by going back to older proposals. (Here’s the proposal for the most recent official image release www.stsci.edu/jwst-program...)
These seem to be purely P.R. Releases, though I doubt there is no scientific value, even if that’s not the main point.
These seem to be purely P.R. Releases, though I doubt there is no scientific value, even if that’s not the main point.
www.stsci.edu
August 13, 2025 at 11:15 AM
This isn’t documented explicitly, but it’s clear by going back to older proposals. (Here’s the proposal for the most recent official image release www.stsci.edu/jwst-program...)
These seem to be purely P.R. Releases, though I doubt there is no scientific value, even if that’s not the main point.
These seem to be purely P.R. Releases, though I doubt there is no scientific value, even if that’s not the main point.
DDT proposals by Macarena Garcia Marin* are guaranteed to have official releases(*though actually that might be a technicality because she is the current project scientist of JWST).
Access to these proposals is restricted until the images release(but you can just match the proposal #s in MAST)
Access to these proposals is restricted until the images release(but you can just match the proposal #s in MAST)
August 13, 2025 at 11:10 AM
DDT proposals by Macarena Garcia Marin* are guaranteed to have official releases(*though actually that might be a technicality because she is the current project scientist of JWST).
Access to these proposals is restricted until the images release(but you can just match the proposal #s in MAST)
Access to these proposals is restricted until the images release(but you can just match the proposal #s in MAST)
This is why MIRI takes a bunch of seemingly random images of a dust clouds.
August 8, 2025 at 8:34 PM
This is why MIRI takes a bunch of seemingly random images of a dust clouds.
For those unaware when the MIRI MRS (mid resolution [integral field] spectroscopy) mode is called for, often times the imager is simultaneously used for astrometric correction. (That is, by imaging (visually) nearby stars it’s possible to determine exactly where the observed MRS field is located.)
August 8, 2025 at 8:34 PM
For those unaware when the MIRI MRS (mid resolution [integral field] spectroscopy) mode is called for, often times the imager is simultaneously used for astrometric correction. (That is, by imaging (visually) nearby stars it’s possible to determine exactly where the observed MRS field is located.)
This piece is really as far as anyone as has pushed 13-limit extended JI and probably as far as anyone will push it. You can easily rack up more pitches but being able to return to normal pitches without forced respelling takes a level of sophistication no living person has to my knowledge.
August 6, 2025 at 12:43 AM
This piece is really as far as anyone as has pushed 13-limit extended JI and probably as far as anyone will push it. You can easily rack up more pitches but being able to return to normal pitches without forced respelling takes a level of sophistication no living person has to my knowledge.
Overall, the movement’s sections are determined by the pitches of a just diatonic scale (1/1 9/8 5/4 4/3 3/2 5/3 15/8 2/1). That is once the comma pumps land on one of these intervals a new section starts, though there is no section on 2/1 rather only the final chord of the piece sounds.
August 6, 2025 at 12:24 AM
Overall, the movement’s sections are determined by the pitches of a just diatonic scale (1/1 9/8 5/4 4/3 3/2 5/3 15/8 2/1). That is once the comma pumps land on one of these intervals a new section starts, though there is no section on 2/1 rather only the final chord of the piece sounds.
Also, between the third and fourth bars a giant stack of fourths is used to pump the 2 cent schisma (32805/32768, which is 2^-15*3^8*5^1, going down fourths (equivalent to going up fifths) is the only way you can achieve that many fifths in only 3 eight notes)
August 6, 2025 at 12:19 AM
Also, between the third and fourth bars a giant stack of fourths is used to pump the 2 cent schisma (32805/32768, which is 2^-15*3^8*5^1, going down fourths (equivalent to going up fifths) is the only way you can achieve that many fifths in only 3 eight notes)
The piece is also rhythmically serialized so that every single eight note corresponds to one cent pumped (though that’s not really how it works in practice). For instance since 896/891 is ~10 cents the first bar is in 5/4 or 10 eight notes.
August 6, 2025 at 12:13 AM
The piece is also rhythmically serialized so that every single eight note corresponds to one cent pumped (though that’s not really how it works in practice). For instance since 896/891 is ~10 cents the first bar is in 5/4 or 10 eight notes.
Every single bar In this piece pumps a tiny comma. The first bar goes from a viola sounding 1/1 to 896/891, 10 cents higher, in the next bar. This is achieved by going down 4 3/2 fifths, up 1 7/4 seventh, and down one 8/11 (a neutral interval between a perfect fourth and a tritone)
August 6, 2025 at 12:11 AM
Every single bar In this piece pumps a tiny comma. The first bar goes from a viola sounding 1/1 to 896/891, 10 cents higher, in the next bar. This is achieved by going down 4 3/2 fifths, up 1 7/4 seventh, and down one 8/11 (a neutral interval between a perfect fourth and a tritone)
This is why in radio astronomy interferometers have to be used to get reasonable resolutions. Single dish telescopes are still vital due to interferometers not being able to pick up on larger angular scales. Also the moon is 1/2 a degree. There are in fact 60, not 100, arcminutes in a degree.
August 3, 2025 at 11:56 AM
This is why in radio astronomy interferometers have to be used to get reasonable resolutions. Single dish telescopes are still vital due to interferometers not being able to pick up on larger angular scales. Also the moon is 1/2 a degree. There are in fact 60, not 100, arcminutes in a degree.
The reason the resolution is so terrible is because of the long wavelength. As the only factors are the size of the dish and the wavelength. If we turned this dish into an optical telescope it would have a resolution between 0.3-0.1 arcseconds. That is over 55,000x times higher in resolution.
wavelength.as
August 3, 2025 at 11:52 AM
The reason the resolution is so terrible is because of the long wavelength. As the only factors are the size of the dish and the wavelength. If we turned this dish into an optical telescope it would have a resolution between 0.3-0.1 arcseconds. That is over 55,000x times higher in resolution.
There’s actually a very simple equation for angular resolution. It’s approximately (1.22)*wavelength in meters/diameter of dish. The diameter is 70cm and the wavelength is 21 centimeters so you get 1.22(0.21/0.70)=0.366 radians. In degrees that’s ~21. The moon is about 1/3rd a degree and M31 is ~2.
August 3, 2025 at 11:41 AM
There’s actually a very simple equation for angular resolution. It’s approximately (1.22)*wavelength in meters/diameter of dish. The diameter is 70cm and the wavelength is 21 centimeters so you get 1.22(0.21/0.70)=0.366 radians. In degrees that’s ~21. The moon is about 1/3rd a degree and M31 is ~2.
Earth observation satellites have another factor. The color bands used often aren’t even trying to closely replicate human vision You at most have 3 bands that superficially line up with the three types of cones in our eyes. In the case of Roscosmos I’m pretty sure it uses a Near infrared band.
August 3, 2025 at 1:53 AM
Earth observation satellites have another factor. The color bands used often aren’t even trying to closely replicate human vision You at most have 3 bands that superficially line up with the three types of cones in our eyes. In the case of Roscosmos I’m pretty sure it uses a Near infrared band.
I guess it’s not impossible that the offer will be taken, especially given the lack of NSF support for the project.(even before 2025 they where tenuous on it, of course it’s much worse now) Still, it’s going to take a lot of convincing from Spain to get the TMT consortium to drop the Mauna Kea site.
July 27, 2025 at 6:24 PM
I guess it’s not impossible that the offer will be taken, especially given the lack of NSF support for the project.(even before 2025 they where tenuous on it, of course it’s much worse now) Still, it’s going to take a lot of convincing from Spain to get the TMT consortium to drop the Mauna Kea site.
I doubt they will. They have already decommissioned 3 telescopes (with a 4th planned) to gain the possibility of a chance of being allowed to built it in Hawaii. It’s the way better site astronomically speaking. It seems they are committed to either building the TMT on Mauna Kea or not at all.
July 27, 2025 at 6:01 PM
I doubt they will. They have already decommissioned 3 telescopes (with a 4th planned) to gain the possibility of a chance of being allowed to built it in Hawaii. It’s the way better site astronomically speaking. It seems they are committed to either building the TMT on Mauna Kea or not at all.
There is somewhat of a spiritual successor to that program. ui.adsabs.harvard.edu/abs/2024jwst...
Bare rocks are not supposed to do that
We propose to elucidate the origin of several puzzling observations relative to the thermal fluxes of TRAPPIST-1 b and c in the mid-infrared. Recent observations of five secondary eclipses of TRAPPIST...
ui.adsabs.harvard.edu
July 18, 2025 at 7:04 PM
There is somewhat of a spiritual successor to that program. ui.adsabs.harvard.edu/abs/2024jwst...
Per the paper attached to this observation iopscience.iop.org/article/10.3... These are likely proplyds. Proplyd are protostars with protoplanetary disks that are being evaporated off by the intense UV radiation of the nearby WR star. This is why the tails are all aligned radially from the star.
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iopscience.iop.org
July 16, 2025 at 9:55 PM
Per the paper attached to this observation iopscience.iop.org/article/10.3... These are likely proplyds. Proplyd are protostars with protoplanetary disks that are being evaporated off by the intense UV radiation of the nearby WR star. This is why the tails are all aligned radially from the star.
I love be the example it gives (the people in a bus still moving forward when it comes to an abrupt stop) is actually an example of the first law applying to busses.
July 11, 2025 at 8:10 PM
I love be the example it gives (the people in a bus still moving forward when it comes to an abrupt stop) is actually an example of the first law applying to busses.
The reason why they are called “constraints” and not configurations is because requiring a specific angle makes the program harder to schedule, unless it’s near the elliptic poles (the 2 places where JWST can look throughput the year without frying itself)
July 11, 2025 at 2:36 PM
The reason why they are called “constraints” and not configurations is because requiring a specific angle makes the program harder to schedule, unless it’s near the elliptic poles (the 2 places where JWST can look throughput the year without frying itself)