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Thanks for the comments! It does look like some stars may be exhibiting stellar drift, I've isolated an example here: https://academo.org/demos/james-webb-vs-hu
by outputchannel 4y ago
Thanks for the comments! It does look like some stars may be exhibiting stellar drift, I've isolated an example here: https://academo.org/demos/james-webb-vs-hubble-telescope-comparison/stellar-drift.gif https://academo.org/demos/james-webb-vs-hubble-telescope-com... This is from the middle-right side of the deep field. If you look slightly below the two central galaxies, there is what looks to be a foreground star (I say that due to its brightness and the fact it has a starburst effect) and between the two frames, there seems to be a noticeable shift in position that doesn't occur with other objects.
- gliptic 4y agoYeap, this is very likely proper motion. That star is in our galaxy.
- shmageggy 4y agoI was wondering how you made that gif and looking for an option on the UI to automatically export one, but then I realized you are OP. That would be a cool feature to add.
- Azrael3000 4y agoFair enough, I misinterpreted GPs post. He and you are obviously correct.
- q1w2 4y agoIt might also be caused by parallax. The image might have been taken at different points in the Earth's orbit around the sun.
- outputchannel 4y agoThat's a really good point. I think there's a high chance that the photos were taken from quite different locations because Hubble orbits the earth at 570km, whereas JWST is actually at the L2 Lagrangian point, which is about 1.5 million km away from Earth.