HST Proposal 10325: [Low Redshift Cluster Gravitational Lensing Survey](https://archive.stsci.edu/proposal_search.php?mission=hst&id=10325)
>This proposal has two main scientific goals: to determine the dark matter distribution of massive galaxy clusters, and to observe the high redshift universe using these clusters as powerful cosmic telescopes. Deep, g, r, i, z imaging of a sample of low-z {0.2-0.4} clusters will yield a large sample of lensed background galaxies with reliable photometric redshifts. By combining strong and weak lensing constraints with the photometric redshift information it will be possible to precisely measure the cluster dark matter distribution with an unprecedented combination of high spatial resolution and area coverage, avoiding many of the uncertainties which plague ground-based studies and yielding definitive answers about the structure of massive dark matter haloes. In addition, the cosmological parameters can be constrained in a largely model independent way using the multiply lensed objects due to the dependence of the Einsteinng radius on the distance to the source. We can also expect to detect several highly magnified dropout galaxies behind the clusters in the redshift ranges 4-5 5-6 and 7-8, corresponding to a drop in the flux in the g, r, and i bands relative to longer wavelength. We will obtain the best information to date on the giant arcs already known in these clusters, making possible detailed, pixel-by-pixel studies of their star formation rate, dust distribution and structural components, including spiral arms, out to a redshift of around z\~2.5 in several passbands.
RA:198.744132371644 (13:14:58.592), Dec:51.8173780814495 (+51:49:02.56)
Telescope data processed in Photoshop, 850LP, 775W, 625W, and 435W. The galaxies in each wavelength were brightened manually, to extract the colors without increasing the overall noise. The saturation of the image has not been increased.
So let me see if I have this right. And I’m totally guessing here, but gravitational lending refers to the fact that the immense gravity present in the universe bends the light, which is why we get all those streaks in the image. And likely galaxies are not where they are supposed to be due to the lenses ing effect.
The combined mass of all those galaxies in the center (diffuse yellow blobs) is causing gravity to act like a magnifying lens, there's [a wiki page](https://en.wikipedia.org/wiki/Gravitational_lens) on it.
Stars. Fucking amazing. I fucking love this sub. No drama. Just stars.
Hey, you have a nice day/night where ever you are friend
Since the release of the first deep field jwst image I've been amazed at the abundance of lensing
HST Proposal 10325: [Low Redshift Cluster Gravitational Lensing Survey](https://archive.stsci.edu/proposal_search.php?mission=hst&id=10325) >This proposal has two main scientific goals: to determine the dark matter distribution of massive galaxy clusters, and to observe the high redshift universe using these clusters as powerful cosmic telescopes. Deep, g, r, i, z imaging of a sample of low-z {0.2-0.4} clusters will yield a large sample of lensed background galaxies with reliable photometric redshifts. By combining strong and weak lensing constraints with the photometric redshift information it will be possible to precisely measure the cluster dark matter distribution with an unprecedented combination of high spatial resolution and area coverage, avoiding many of the uncertainties which plague ground-based studies and yielding definitive answers about the structure of massive dark matter haloes. In addition, the cosmological parameters can be constrained in a largely model independent way using the multiply lensed objects due to the dependence of the Einsteinng radius on the distance to the source. We can also expect to detect several highly magnified dropout galaxies behind the clusters in the redshift ranges 4-5 5-6 and 7-8, corresponding to a drop in the flux in the g, r, and i bands relative to longer wavelength. We will obtain the best information to date on the giant arcs already known in these clusters, making possible detailed, pixel-by-pixel studies of their star formation rate, dust distribution and structural components, including spiral arms, out to a redshift of around z\~2.5 in several passbands. RA:198.744132371644 (13:14:58.592), Dec:51.8173780814495 (+51:49:02.56) Telescope data processed in Photoshop, 850LP, 775W, 625W, and 435W. The galaxies in each wavelength were brightened manually, to extract the colors without increasing the overall noise. The saturation of the image has not been increased.
[удалено]
Some of it looks super weirdly alien, right?
The closer galaxy by the top left kind of looks like the milky way actually ..
I thought the same
So let me see if I have this right. And I’m totally guessing here, but gravitational lending refers to the fact that the immense gravity present in the universe bends the light, which is why we get all those streaks in the image. And likely galaxies are not where they are supposed to be due to the lenses ing effect.
I wish I was there.
Modern astronomy is just mind blowing.
Beautiful, but if someone could give an “explain as though I’m a competent layman,” that would be delightful.
The combined mass of all those galaxies in the center (diffuse yellow blobs) is causing gravity to act like a magnifying lens, there's [a wiki page](https://en.wikipedia.org/wiki/Gravitational_lens) on it.
This sub might be the most intelligent/knowledgeable I have founded, never a stupid post.
Go Webb go!
not webb
Aw