The amateur astronomer has made a whopping 11 discoveries, nine of which are named after him at this point.
“To my knowledge, I am the first and only amateur astronomer to have galaxies named after them,” Donatiello tells. “It all started with the first discovery in 2016 when, in my astrophotographs, I found what we would call Donatiello I. Although this was an unusual practice, the new galaxy received my name, and it was a great joy.”
This composite image shows the dwarf galaxies Donatiello I to Donatiello IX, as seen by the Dark Energy Camera . | Credit: DECam/CTIO/NOIRLab/NSF/AURA, G. Donatiello “In general, dwarf galaxies are objects that exhibit very low luminosity,” Donatiello explains. “Suffice it to say that many satellites of the Milky Way are difficult to detect because they are well-camouflaged in the star fields. This becomes increasingly difficult for external galaxies. Already, at just a few megaparsecs , the faintest dwarf galaxies have disappeared into the background of the sky.
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