General > General Technical Chat

JWST VS Hubble, with a slider comparing each telescope images superimposed.

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BrianHG:
JWST captures Jupiter's rings:


BrianHG:
Webb's latest new images, high res: (It takes a few clicks to zoom all the way in...)
https://www.flickr.com/photos/nasawebbtelescope/albums/72177720301006030/with/52259483705/

Webb's first set of images, high res:
https://www.flickr.com/photos/nasawebbtelescope/albums/72177720300469752

BrianHG:

--- Quote from: Sal Ammoniac on July 18, 2022, 09:26:01 pm ---
--- Quote from: BrianHG on July 16, 2022, 08:32:08 pm ---All the stars with lens flares are really close, IE in the Milky Way galaxy.

--- End quote ---

What you call lens flare is actually diffraction spikes. The following explains why the diffraction pattern around bright starts looks the way it does.



--- End quote ---
I wonder if Webb were to take 2 identical exposures, one slightly rotated from the other.  It might be possible to negate the angle differences of the diffraction-spikes in the 2 images.

hamster_nz:

--- Quote from: BrianHG on August 04, 2022, 10:39:41 pm ---I wonder if Webb were to take 2 identical exposures, one slightly rotated from the other.  It might be possible to negate the angle differences of the diffraction-spikes in the 2 images.

--- End quote ---

It is possible, but to do a rotation you would have to rotate the whole JWST structure. That would most likely not be a trivial exercise, given the constraints it has to operate under - heat shield to face the sun, antennas pointing to the Earth , need to minimizing vibrations (from reaction wheels), and the current load of propellent is all it will ever have - once that is gone the mission is over.

Peter_O:
If I understand NASA right, JW is new in focussing on the infrared.
So there is a lot more nwq information gained, that might not be transferable into visible pictures.

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