Returned from a week vacation in Zeeland. Hired a condo near the North Sea.
Barely used the internet during that time.
Fishing, beach walks (with dogs), boat trip, quality conversations with a glass of wine in the evening and -what i loved- jogging on the beach early in the morning.
Empathizing with nature environment cleared my mind from daily bullshit, it has positive cognitive and mental health benefits. It's actually a personal obligation for all people to do that few times a year.
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Hubble vs Webb Cartwheel Galaxy.
At this scale and resolution, the images are both the same, just that the reddish pic at the end of the morph shows more h-alpha content (distant nebulas and galaxies) in foreground and background. Or was it some kind of joke i didn't get?
no, bluish is Hubble, reddish is Webb, imho. one image "transforms" into another.
basically, interstellar dust absorbs UV and visible light, but does not absorb infrared, hence Webb's ability to "see through" better than Hubble in red/infrared.
I wonder if Webb could look at the Milky Way "arch". It should look quite different from what we used to, imho.
Not sure if it could take such panoramic view, though.
Correct. You can see the different mirror geometries in the shape of the star "spikes".
H-alpha is inside the visible infrared range, infrared is usually cut off because of focus shift and blur, BUT i doubt the NASA telescopes use color ccd imaging sensors, but monochrome ones. They capture wavelenghts separately and blend them together into a color image representation of the captured data. One monochrome sensor pixel collects four times more light than its color pendant, which is very wanted in deep space photography.
Of course, the Webb could be used for panoramas, but this would need a lot of separate shots stitched together.
I guess it's the sensor/mirror combination that allows Webb to collect more light at mkre selective wavelengths, to make it look "deeper" into space, also contributed by better signal/noise result ratios.
The shift in resolution isn't obvious in the small animated .gif, which would make quite a difference when watching close-up (or far-out).
Just came from outside testing a new (used) 430mm scope. Had to combat software bugs regarding the camera driver after an update and used the clear sky to record lights of two nebulas, 30 minutes exposure each, for a quick test. Look OK on the first glance. Tomorrow i should have time to process the data and upload some images via imgur and i strongly guess i'll be posting them here, too.
how about now?
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quite significant difference from what I can see... remember one is dust and visible light the other in the infrared
seeing the heat distribution and the expansion filaments of a image offers incredible insight into stellar formation theory
JWST is a game changer
Totally agree. It's just that most differencies don't come out as in comparison to full scale images through the gif.
Webb results are amazing, as well as the NASA image processing.
Good night.
EDIT: There definitely also seems to be some ("invisible") infrared content along with h-alpha (deep dark-red).
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