Tagged: Open Cluster - Adam Lundie - Eatons Hill Observatory

First Calalogued in 1752, the NGC 3532, also known as the Wishing Well Cluster is an open cluster comprised of approximately 150 stars. It was also the first object ever observed by the Hubble Space Telescope. The bright orange star in the top right of the image is x Carinae (x Car), the brightest yellow hypergiant in the sky - 200,000 times as luminous as the Sun.

The Butterfly Cluster, Messier 6, is an open cluster of hot blue stars with the brightest member being an orange giant star. Behind the cluster is the orange light of the Milky Way, and a beautiful cloud of excited Hydrogen alpha gas.

The Gabriela Mistral Nebula lies close to the Carina Nebula ~7500 light years distant in the far-southern sky. This image is a narrowband representation showing glowing ionised gasses, Hydrogen-alpha (orange), Sulfur-II (red), and Oxygen-III (blue).

The Rosette Nebula is an emission nebula 3000 light years away. The central area of the nebula contains an open cluster of hot, blue stars which have cleared much of the center of its gas.

The Jewel Box, Kappa Crucis Cluster, NGC 4755, is an open cluster in the constellation Crux. This cluster is one of the youngest known, with an estimated age of 14 million years. It is located 6,440 light years from Earth, and contains around 100 stars.

NGC 6188 is a large emission nebula of compressed molecular clouds 4,000 light years away in the constellation Ara. This image spans around 3 full moons and comprises of emission line data for Sulfur-II, Hydrogen-alpha and Oxygen-III, mapped to red, green, and blue respectively.