alt Hacker NewsIt's a coordinate on the celestial sphere, which is just as good a coordinate as anything else. Now, if the title had said something like "place" you might have a case that the expectation is that a specific spacetime point is being defined.
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pixelesque • today at 11:47 AM
It's not even that though if we are going to be nit-picky: it's a coordinate (not quite sure what the pixel extent would subtend to solid-angle-wise, but...) based off the coordinate frame of where the space telescope will be when the image is taken in spherical coordinates.
That's not "exclusive". The "pixel" is the exclusive bit.
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darthoctopus • today at 11:54 AM
that's only true if Roman were to do a continuous stare. However, it (as with any telescope) has to re-point from time to time in order to look at different targets.
So you get a lot more than one point for your money, you get a semi-infinite line.