Comment by defrost
3 hours ago
Ground constellations (eg: SKA in radio astronomy) are still vastly cheaper than orbiting arrays, also easier wrt incremental upgrade via physical visits, etc.
3 hours ago
Ground constellations (eg: SKA in radio astronomy) are still vastly cheaper than orbiting arrays, also easier wrt incremental upgrade via physical visits, etc.
Upgrades are overrated. Stick your telescope in sun–synchronous orbit and leave it there. Launch a better one every year or three. After a few launches your undergrads will still be excited to use that first telescope, your PhD students will use the next several, and your faculty will all be drooling over the latest.
Upgrades don’t increase capacity.
Oh, and we’ve got universities spending billions of taxpayer money to carve up mountains in Peru to build telescopes on top. Those are not cheaper than space telescopes would be.
Again: Radio astronomy.
> universities spending billions of taxpayer money to carve up mountains in Peru to build telescopes on top
Which university and telescope are you talking about?
> Those are not cheaper than space telescopes would be.
In general, they are - take a ground based telescopes costs, now harden it for space (extra cost), now "do the right stuff" to ensure it will work in isolation (more cost), and now package it it and launch it (more cost again).