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It doesn't gather as much light as ground based telescopes, but the background (for example, from airglow) is also much lower, so the SNR is pretty good.
by pfdietz 2y ago
It doesn't gather as much light as ground based telescopes, but the background (for example, from airglow) is also much lower, so the SNR is pretty good.
- dylan604 2y agoThat's one of the reasons for building in the Atacama desert. Also, the adaptive optics technology has pretty much removed the majority of the negatives from the atmosphere.
- derlvative 2y agoWhat's SNR?
- ludwigschubert 2y agoAn abbreviation for “signal-to-noise ratio” that imo should have been StNR or simply S/N. (Thus I sympathize with not parsing it immediately — it is widely used, though, so it is good to know.) https://en.wikipedia.org/wiki/Signal-to-noise_ratio_(imaging) https://en.wikipedia.org/wiki/Signal-to-noise_ratio_(imaging...