Sunshine Posted July 12, 2022 Share Posted July 12, 2022 8 minutes ago, Jamgood said: The detail in this shot is just exquisite! Incredible! This is an astounding image, as you say, the sheer amount of detail is just miraculous. 1 Link to comment Share on other sites More sharing options...
Laurieast Posted July 12, 2022 Share Posted July 12, 2022 16 minutes ago, Ouroboros said: Sorry if this has already been covered here but is there an explanation somewhere of what the different colours represent in the JSWT colour pallete/s? Only explanation I have seen is this, from: https://webbtelescope.org/contents/media/images/2022/038/01G7JGTH21B5GN9VCYAHBXKSD1 Color Info These images are a composite of separate exposures acquired by the James Webb Space Telescope using the NIRCam instrument. Several filters were used to sample broad wavelength ranges. The color results from assigning different hues (colors) to each monochromatic (grayscale) image associated with an individual filter. In this case, the assigned colors are: Red: F444W Orange: F356W Green: F200W + F277W Blue: F090W + F150W Compass Image 2 Link to comment Share on other sites More sharing options...
johnfosteruk Posted July 12, 2022 Share Posted July 12, 2022 16 minutes ago, Laurieast said: Only explanation I have seen is this, from: https://webbtelescope.org/contents/media/images/2022/038/01G7JGTH21B5GN9VCYAHBXKSD1 Color Info These images are a composite of separate exposures acquired by the James Webb Space Telescope using the NIRCam instrument. Several filters were used to sample broad wavelength ranges. The color results from assigning different hues (colors) to each monochromatic (grayscale) image associated with an individual filter. In this case, the assigned colors are: Red: F444W Orange: F356W Green: F200W + F277W Blue: F090W + F150W Compass Image Here's a lot more detail on the NIRCam filters: https://jwst-docs.stsci.edu/jwst-near-infrared-camera/nircam-instrumentation/nircam-filters 1 2 Link to comment Share on other sites More sharing options...
Ouroboros Posted July 12, 2022 Share Posted July 12, 2022 23 minutes ago, Laurieast said: Only explanation I have seen is this, from: https://webbtelescope.org/contents/media/images/2022/038/01G7JGTH21B5GN9VCYAHBXKSD1 Color Info These images are a composite of separate exposures acquired by the James Webb Space Telescope using the NIRCam instrument. Several filters were used to sample broad wavelength ranges. The color results from assigning different hues (colors) to each monochromatic (grayscale) image associated with an individual filter. In this case, the assigned colors are: Red: F444W Orange: F356W Green: F200W + F277W Blue: F090W + F150W Compass Image Thanks. I suppose they don’t have to use just one colour key. Deep sky galaxy fields could be one colour palette, nebulae another and so on. Link to comment Share on other sites More sharing options...
ONIKKINEN Posted July 12, 2022 Share Posted July 12, 2022 8 minutes ago, johnfosteruk said: Here's a lot more detail on the NIRCam filters: https://jwst-docs.stsci.edu/jwst-near-infrared-camera/nircam-instrumentation/nircam-filters Thanks, nice and easy to understand graph in there: 2 1 Link to comment Share on other sites More sharing options...
Ouroboros Posted July 12, 2022 Share Posted July 12, 2022 13 minutes ago, johnfosteruk said: Here's a lot more detail on the NIRCam filters: https://jwst-docs.stsci.edu/jwst-near-infrared-camera/nircam-instrumentation/nircam-filters Thanks. I was just about to post this page. What they’ve done then is to transfer the colours of the visible spectrum (violet to red) to the ~1 to 5 micron range in the infrared that the JWST camera is sensitive. Link to comment Share on other sites More sharing options...
CraigT82 Posted July 12, 2022 Share Posted July 12, 2022 Jupiter’s ring anyone?! 2 Link to comment Share on other sites More sharing options...
Craig a Posted July 12, 2022 Share Posted July 12, 2022 That deep feild SMACS 0723 is simply unbelievable, wonder how much it would cost to coat my 10 inch mirror in 24ct gold 😂 3 Link to comment Share on other sites More sharing options...
faulksy Posted July 12, 2022 Share Posted July 12, 2022 2 hours ago, Jonk said: Stephen's Quintet has just been released. Very very nice. Screenshot: Here's a link to the full image: https://stsci-opo.org/STScI-01G7DAXJYYTYXCFSB8VQRK5X2F.tif going to need a bigger dob 2 Link to comment Share on other sites More sharing options...
globular Posted July 12, 2022 Share Posted July 12, 2022 13 minutes ago, Craig a said: wonder how much it would cost to coat my 10 inch mirror in 24ct gold 4 minutes ago, faulksy said: going to need a bigger dob Your existing scopes are fine. You just need a new mount that can position them near the Sun-Earth Lagrange point (2). Simples. 2 Link to comment Share on other sites More sharing options...
beetm Posted July 12, 2022 Share Posted July 12, 2022 (edited) Fantastic pictures, I have a question, if any of the more experienced guys know; if you zoom in on the original release groups of galaxies are all oriented the same way. (Left and slightly above the star for example), this can't be coincidence can it? Edit; Never mind, I found the answer. They said the massive galaxy in the center (not the star, that's a foreground image) is bending the light of all the other galaxies around it, "Like in the bottom of a wine glass". Edited July 12, 2022 by beetm Link to comment Share on other sites More sharing options...
StuartT Posted July 12, 2022 Share Posted July 12, 2022 It looks like to download the data from MAST you need to be a university employee (registration asks for an institution and a job title). Any other way of getting it? https://archive.stsci.edu/contents/newsletters/july-2022/accessing-jwst-science-data-after-the-end-of-commissioning Link to comment Share on other sites More sharing options...
johnfosteruk Posted July 12, 2022 Share Posted July 12, 2022 16 minutes ago, StuartT said: It looks like to download the data from MAST you need to be a university employee (registration asks for an institution and a job title). Any other way of getting it? https://archive.stsci.edu/contents/newsletters/july-2022/accessing-jwst-science-data-after-the-end-of-commissioning You can still register - just use N/A for those fields. 1 Link to comment Share on other sites More sharing options...
Jamgood Posted July 12, 2022 Share Posted July 12, 2022 18 minutes ago, StuartT said: It looks like to download the data from MAST you need to be a university employee (registration asks for an institution and a job title). Any other way of getting it? https://archive.stsci.edu/contents/newsletters/july-2022/accessing-jwst-science-data-after-the-end-of-commissioning Just leave those options blank. 1 1 Link to comment Share on other sites More sharing options...
faulksy Posted July 12, 2022 Share Posted July 12, 2022 41 minutes ago, globular said: Your existing scopes are fine. You just need a new mount that can position them near the Sun-Earth Lagrange point (2). Simples. my half meter scope would be ace up there 🤣 1 Link to comment Share on other sites More sharing options...
wimvb Posted July 12, 2022 Share Posted July 12, 2022 1 hour ago, Craig a said: That deep feild SMACS 0723 is simply unbelievable, wonder how much it would cost to coat my 10 inch mirror in 24ct gold 😂 Gold isn't the problem. The atmosphere and cooling are. Our best chance at JWST like images is when Deep Sky West or iTelescope set up shop on the far side of the moon. 1 Link to comment Share on other sites More sharing options...
Xilman Posted July 12, 2022 Share Posted July 12, 2022 1 hour ago, Craig a said: That deep feild SMACS 0723 is simply unbelievable, wonder how much it would cost to coat my 10 inch mirror in 24ct gold 😂 Not much. About the same as it would cost you to have the same mirror re-aluminized. Plenty of people will do it for you. The metal is a vanishingly small part of the cost. The majority is the vacuum chamber and the very precise process control. 1 Link to comment Share on other sites More sharing options...
lukebl Posted July 12, 2022 Share Posted July 12, 2022 It bothers me that the diffraction patterns from JWST images form a rather flattened six-pointed star, rather than a neat symmetrical hexagon, if you get my drift. …but I guess that’s a me problem, as my son constantly tells me. 1 Link to comment Share on other sites More sharing options...
Ratlet Posted July 12, 2022 Share Posted July 12, 2022 2 hours ago, CraigT82 said: Jupiter’s ring anyone?! I'm pretty certain they're flexing on everyone else by casually just dropping in the ring of Jupiter. 1 Link to comment Share on other sites More sharing options...
Zermelo Posted July 12, 2022 Share Posted July 12, 2022 27 minutes ago, lukebl said: It bothers me that the diffraction patterns from JWST images form a rather flattened six-pointed star, rather than a neat symmetrical hexagon, if you get my drift. …but I guess that’s a me problem, as my son constantly tells me. I think it's a combination of the secondary struts and the shapes of the hexagons. Did you see this, further up: Link to comment Share on other sites More sharing options...
wimvb Posted July 12, 2022 Share Posted July 12, 2022 36 minutes ago, lukebl said: It bothers me that the diffraction patterns from JWST images form a rather flattened six-pointed star, rather than a neat symmetrical hexagon, if you get my drift. …but I guess that’s a me problem, as my son constantly tells me. Diffraction patterns are always at right angles to the edge causing the diffraction, and emanate from the (image of the) light source. 1 Link to comment Share on other sites More sharing options...
bomberbaz Posted July 12, 2022 Share Posted July 12, 2022 (edited) 7 hours ago, DaveS said: This an image from a few years ago. 2 mins each RGB with the Liverpool Telescope on La Palma Sorry if the overall rotation isn't perfect but do the interacting pair looked to have rotated a little more since the image from La Palma? I don't think it is significant, but a few degrees or so! Edited July 12, 2022 by bomberbaz 1 Link to comment Share on other sites More sharing options...
Gfamily Posted July 12, 2022 Share Posted July 12, 2022 3 hours ago, ONIKKINEN said: Thanks, nice and easy to understand graph in there: That makes sense F = Filter nnn = wavelength in microns x 100 W2 / W / M / N to indicate whether Very Wide / Wide / Medium / Narrow spreads Link to comment Share on other sites More sharing options...
Ouroboros Posted July 12, 2022 Share Posted July 12, 2022 2 minutes ago, Gfamily said: That makes sense F = Filter nnn = wavelength in microns x 100 W2 / W / M / N to indicate whether Very Wide / Wide / Medium / Narrow spreads All very logical init? Link to comment Share on other sites More sharing options...
Ouroboros Posted July 12, 2022 Share Posted July 12, 2022 Would I be right to assume that the narrow band filters select for emissions from particular elements? Link to comment Share on other sites More sharing options...
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