James Webb space telescope set to launch on Christmas Eve.

[Asbo Zaprudder]

Videos containing more info about the images:

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Dr Becky, of course is a working astrophysicist, not someone like me, who hasn't been involved in the field for forty years.

 

[publiusr]

Some comparisons
https://www.webbcompare.com/

Chandra in on the act
https://www.coasttocoastam.com/article/webb-space-telescope-images-upgraded-with-chandra-x-rays/

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https://nasawatch.com/astronomy/this-is-just-a-glimmer-of-what-webb-will-reveal/

Seems familiar
https://screenrant.com/doctor-who-james-webb-telescope-photos-reaction/amp/

Solar Foci scope next?
https://www.universetoday.com/15798...powerful-telescope-what-are-its-best-targets/

Hubble boost
https://www.universetoday.com/157844/nasa-spacex-hubble-reboost/

Our Galaxy in 3D
https://www.universetoday.com/15972...-to-map-our-surroundings-in-three-dimensions/

Halloween astronomy 666
https://forum.cosmoquest.org/forum/...666-solar-system-references-to-the-underworld

The next scope
https://www.universetoday.com/16033...that-could-change-with-a-new-space-telescope/
https://www.optica.org/en-us/about/...rchers_devise_new_membrane_mirrors_for_large/

 

[Asbo Zaprudder]

Some comparisons
https://www.webbcompare.com/

Night and day really although the wavelength ranges are different, obviously.

Seems familiar
https://screenrant.com/doctor-who-james-webb-telescope-photos-reaction/amp/

The diffraction spikes indicate the observing instrument's configuration is more like the HST's. Also the chromatic aberration is problematic.

ETA: Looking at the spectra of the deep-field galaxies, they seem to show very prominent oxygen lines. Of course, the big bang shouldn't have produced any elements much heavier than helium and lithium so it'll be interesting to hear an explanation of why very young galaxies show evidence of heavier elements. Oxygen isn't surprising in itself as it's the third most common element by mass in the universe. A billion years or so is probably long enough for many generations of massive stars to go through their life cycles and synthesise these elements but the abundance data will be an important test of theories of early galaxy development.

 

[Ar-Pharazon]

From FB.

 

[Asbo Zaprudder]

Here's a video by Dr Becky about whether the colour depicted in astronomical images is real:

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[Ar-Pharazon]

Given the vastness of space, how do they actually know the exact place to put the telescope between the earth and the sun?

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[valkyrie013]

Apparently it now has some damage. Micro meteor impacts. One is a bit worse. All on the mirror.
It's not broken but it does impact the quality.

 

[Timelord79 (he/him)]

Apparently it now has some damage. Micro meteor impacts. One is a bit worse. All on the mirror.
It's not broken but it does impact the quality.

source?

 

[valkyrie013]

https://www.space.com/james-webb-space-telescope-micrometeoroid-damage

 

[think]

 

[Non Sync]

The telescope is experiencing an issue that is impacting the Mid-Infrared Instrument (MIRI) grating wheel, which selects the wavelength to be observed. Friction was first observed in late August and have paused observations for the particular mode of operation of the telescope. An anomaly review board has been convened "to assess the best path forward."

 

[publiusr]

Hubble gave us the expanding universe—and it looks like Webb is taking it back:
https://arxiv.org/pdf/2212.06575v1.pdf
https://forum.cosmoquest.org/forum/...-challenge-to-the-standard-cosmological-model

I never bought into supernovae as standard anythings.

2022’s biggest astronomical story was this:
https://www.sciencenews.org/article/lost-ancient-star-catalog-found