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The spatial resolution matters a lot when comparing images across wavelengths, or even just between telescopes.

Most coherent, developed, tested materials

  • Resolution Overview -- Dr. Luisa Rebull (created 2010, last substantially updated 2017)
  • Resolution and YSOs, examples and exercises (used to be integrated with the overview above) -- Dr. Luisa Rebull (created 2010, last substantially updated 2017)

Other important CoolWiki pages

Less coherent, developed, tested materials

Useful Related Links

JWST resolution 0.0000194 deg = 0.06984 arcsec - check this against actual in-flight measures, as fcn of wavelength

Angular meaures on the sky from LCOGT

Article on resolution from Bad Astronomy - this is in the context of debunking the moon hoax, but resolution issues are important for his discussion.

Another resolution discussion from Bad Astronomy.

Why can Hubble get detailed views of distant galaxies but not of Pluto? by Emily Lakdawalla at the Planetary Society

xkcd on angular size (link is actually to the explainer, which has more information than just the comic.)