3 ms·
I vaguely recall that image resolution is a function of total photons inbound, distance to the object being observed, and effective sensor size. The photon den
by all2 5y ago
I vaguely recall that image resolution is a function of total photons inbound, distance to the object being observed, and effective sensor size.
The photon density (assuming the source is not a point source) varies over the distance to the observed object, which will place a theoretical limit on resolution.
The other half is sensor size, ie, can we catch enough photons to make sense of what's emitting/reflecting them?
I haven't touched optics in a long time, though.
- andreareina 5y agoIt's proportional to the aperture diameter and inversely proportional to the wavelength. That's why they needed telescopes that spanned the globe for that image of a black hole. More photons does get you shorter exposure times (and therefore better temporal resolution, fair enough). JWST by the way is able to resolve at this theoretical limit, which is just wild.