Expansion of the supernova remnant M1 between 1999 and 2016. 1999 Image is taken from Hubble, the 2016 one is taken by me.
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Automate the observatory with two telescopes is much more difficult than with one. Here I'm imaging NGC 891 with both telescopes and then the humidity reaches the maximum threshold, so both mounts get parked and the roof is closed.
Moon gets out and a meridian flip occurs. Some clouds rolling by.