3 ms·
btw, Hubble Extreme Deep Field (2012) is deepest optical to date. "The exposure time was two million seconds, or approximately 23 days" [1] -- that's insane sta
by leeoniya 13y ago
btw, Hubble Extreme Deep Field (2012) is deepest optical to date. "The exposure time was two million seconds, or approximately 23 days" [1] -- that's insane stability!
[1] http://en.wikipedia.org/wiki/Hubble_Extreme_Deep_Field http://en.wikipedia.org/wiki/Hubble_Extreme_Deep_Field
- splat 13y agoKeep in mind that the 2 megasecond exposure was not done all at once. It consists of many shorter exposures (probably about 10-20 minutes apiece) added together. If the exposure had been done all at once, it would have saturated. Moreover, cosmic rays would ruin large regions of a single long-exposure image.