Globular Clusters in constellation Coma Berenices, 58000 and 57000 light years from earth.

Both clusters are apparently related and a tidal stream between both indicate a previous encounter. So they can be considered as a „double globular cluster“, which seems to be unique in our galaxy. They are also part of the tidal stream between our Milky Way Galaxy and the Sagittarius Dwarf Galaxy (not visible in this picture), which has been identified being a galaxy as such only in late last century.
Both clusters are classified as metal-poor, means they lack heavier elements than Helium. Their stars are considered to be generation II stars and have been born from gas clouds which have not been enriched with „metals“ by dying stars and supernova events. So they are probable very old objects. Their composition is more similar to the other globular clusters of the Sagittarius Dwarf Galaxy indicating, that they (at least NGC 5053) may have been stripped from this neighbor galaxy by tidal interaction with our galaxy.

On the very right side of this images the two galaxies IC 858 and IC 859, probably an interacting pair, show up. Their distance from earth is about 300 million light years.

Celestron RASA 11 v2
Celestron CGX-L mount
RisingCam ATR3CMOS26000KPA
UV/IR Cut filter
Bortle 4-5
No moon

363x30sec (3h1m30s)

PixInsight