Cloud

https://www.legacysurvey.org//viewer/?ra=15.0441&dec=-33.7288&layer=ls-dr9&zoom=9
Probably researchers are familiar with this “cloud” ?

Nice spot! Yep, that’s known as the Sculptor dwarf galaxy, a satellite galaxy of the Milky Way.

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Here is an article on the Bruce Refractor used to spot the galaxy (thanks Wiki) The Bruce Telescope Rediscovered | Harvard Magazine