Saturday, May 14, 2022

NGC 5466 - Mel 124 - Snowglobe Cluster (Ghost Globular Cluster)

NGC 5466 is a globular cluster located 51,800 light-years from Earth in the constellation Bootes. It is extremely old at approximately 12.5 billion years. It has an unusually sparse core and happens to be the same distance from the center of the Milky Way as it is from us. I did not find a whole lot of general information on this cluster but one interesting thing stands out is that it has a linear branch of blue stars running through it. Also the majority of the stars are metal poor compared to other globular clusters.

I imaged this because I did not want to waste another rare clear night just because the moon was out so I went for something that a moon would not wash out much. I did not crop this much because the field of view contained many smaller galaxies, some of which show a bit of structure. My favorite is PCG 50187, the one on the right side of the image. I was also surprised and happy with the colors in starfield as well as within the cluster.  


NGC 5466 - Mel 124 - Snowglobe Cluster (Ghost Globular Cluster)
Dates: 5-12-22
Camera: ZWO ASI294MC-Pro
Telescope: Celestron EdgeHD 800
Barlow: None
Focal Length: 2032mm (native)
F/10 (native)
Focal Reducer: Celestron 0.7 Reducer Lens
Mount: Orion Atlas Pro
Filter Adaptor: ZWO Filter Drawer
Filter: Baader Moon and Skyglow (2-inch)
Focuser: ZWO EAF
Autoguiding: ASI120 Mini attached to an Orion ST80
Exposure: Lum 180 x 60
Gain: 139
Offset 0
Temp: -10 C
Processing: Asiair app, PixInsight, Photoshop, StarXTerminator, GradientXTerminator, Topaz DeNoiseAI.

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