X-Nico

unusual facts about Andrew Ainslie Common


Andrew Ainslie Common

After Common's death the telescope with its two 60 inch mirrors and other secondary optics was purchased from his estate and installed at the Harvard College Observatory.


Crossley telescope

The mirror, and some of the initial mounts came from the 36 inch reflector originally mounted in Andrew Ainslie Common's back yard Ealing observatory, who had used it from 1879 to 1886 to prove the concept of long exposure astrophotography (recording object too faint to be seen by the naked eye for the first time).


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