Wednesday, November 4, 2020

NGC 188 - Polarissima Cluster

NGC 188 is an open cluster in the constellation Cepheus, very close to Polaris, and is approximately 5400 light-years away.  This is one of the oldest open clusters in the Milky Way at 6.8 billion years and lies far above the galactic plane which has helped it remain intact rather than drift apart like most other clusters.  In addition to the 120 colorful stars that make up this cluster, great amounts of gas and dust are part of it and surround it.  I could have darkened it so most of the gas and dust would not be visible but I really like the dust around this region and plan doing other objects in the vicinity.

Dates: 10-7-20, 10-15-20, 10-18-20, 10-19-20, 10-25-20

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NGC 188 - Polarissima Cluster 
Home Monroe, CT
Dates: 10-7-20, 10-15-20, 10-18-20, 10-19-20, 10-25-20
Camera: ZWO ASI1600MM-Pro
Telescope: Astro-Tech AT115EDT 115mm Refractor Telescope
Barlow: None
Focal Length: 805mm
f/7
Focal Reducer: AstroTech Field Flatterner/Focal Reducer
Mount: Orion Sirius
Filter Wheel: ZWO EFW 8 x 1.25"
Filter: ZWO L, R, G, B
Focuser: ZWO EAF
Autoguiding: ASI120 Mini attached to an Agena 50mm Guide Scope/ZWO 60mm Guidescope
Exposure: L 138 x 90, R 74 x 90, G 70 x 90, B 73 x 90
Gain: 139
Offset 21
Temp: 5 C

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