After celebrating 32 years of Hubble observations, a physicist has combined all of the snapshots of Hubble's exploration into one image.
back in April. He originally shared it in four pieces. However, he later added another tweet with the entirety of the Hubble observations tied together.
“Hubble’s field of view is 202 arc seconds,” Handmer explained on Twitter. As such, he says that it would take around 3.2 million observations to completely cover the sky. At that point in time, over 1.4 million Hubble observations had been completed. As such, the telescope must have captured as least half of the sky, right?
If Hubble has already completed half of the observations that it would need to cover the sky, why has so little been observed? Well, there are a number of reasons. First, NASA didn’t design Hubble to perform wide-field surveys. As such, the observations it has undergone are much more focused. Some parts of the sky are more interesting than others.
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