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We recently wrote about the news deriving from the observations of the James Webb space telescope. For example, take advantage of the gravitational lensing to observe the celestial object MACS0647-JD, what could be two or more galaxies billions of light years away from Earth and formed about 400 million years after the Big Bang. The images of IC 1623, two galaxies that are merging with each other. But the truth “jewel” of the last days are the “pillars of creation” in the Eagle Nebula.
Click on the image to enlarge
The JWST has managed to obtain truly amazing images that will be useful for scientists to gather new information on the birth of stars and solar systems but also to learn more about that chaotic environment. Furthermore, their beauty can also be grasped by those who do not pay particular attention to the world of astronomy thanks to very suggestive colors and shapes. In these hours a new elaboration of the “pillars of creation” that were “adapted” to be themed Halloween.
The James Webb Space Telescope and the “Pillars of Creation” in a Halloween version
Even if the subject remains the same, choosing which data to use and changing the processing can achieve very different results. In particular the JWST used the data collected a MIRI (Mid-Infrared Instrument) in mid infrared using the wavelengths 7.7 μm, 11 μm and 15 μm to which the colors blue, green and red have been assigned respectively.
In this way the pillars that shone in various shades of orange became blue / gray almost as if they were made of ash. To make the scene even more engaging there is the glow of the dust with little dense and diffused in the Space which in this case has become orange almost to remember a pumpkin from Halloween. Obviously the overall structure has not changed but now i “pillars of creation” (which are 6500 light years from Earth) resemble the fingers of a ghost’s hand. Something ethereal.
The image captured by the VLT in 2001 of the same area
As mentioned byESAin the mid-infrared used for this image of the James Webb space telescope the stars are not bright enough and therefore remain mostly hidden or barely visible compared to the near infrared. With MIRIunlike NIRCam, only the youngest stars can be seen that still have a good coverage of stellar dust and are able to be highlighted precisely because of the emission in the near infrared.
Unlike the photo captured with NIRCam, the interstellar medium of the Milky Way blocks the light of the galaxies in the background due to the presence of a high amount of gas and dust. To give an idea of the size, the scene taken is about 5 light years in size. As an example, above you can see the image captured by the Very Large Telescope (VLT) in 2001 with the 1.2μm, 1.65 μm and 2.1 μm filters which shows a completely different scene both compared to what Hubble and the JWST (and in some ways almost more spooky, suitable for Halloween).
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