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Astronomy and Cosmology
Astronomy and Astrophysics
Diffraction Effects and Artifacts in Telescopes like the JWST
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[QUOTE="collinsmark, post: 6815254, member: 114325"] No, there [I]is[/I] stacking. There's always at least [I]some[/I] stacking, even with JWST's pristine sensors. I'm just not sure how much is typically done with JWST. I don't take exception to the acknowledgment that there are practical limitations. Of course there are limitations such as finite amount of integration time for practical reasons. Of course. What I take objection to is claims implying that it is [I]impossible[/I] to detect small details such as the diffraction spikes of dimmer stars, even in principle. It's [I]not[/I] impossible; the physics that cause the diffraction spikes of brigher stars is also equally present for dimmer stars. It just may take more integration time (either longer exposures or stacking of shorter exposures) to bring those spikes above the floor. [/QUOTE]
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Diffraction Effects and Artifacts in Telescopes like the JWST
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