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M33

The Triangulum Galaxy

The Triangulum Galaxy (M33) is a spiral galaxy in the constellation Triangulum. It is 2.73 million ly from us and is the 3rd largest galaxy in the local group after Andromeda and our Milky Way. M33 has a diameter of approximately 61,100 ly and estimated to contain 40 million stars.

Scope: Horizon 72ED 432mm
Camera: ASI533 MC Pro
Mount: iEXOS-100 PMC8
Control: ASIAir Pro
Filter: Altair Quadband (definitely not ideal for galaxies and used purely by mistake)
Exposure: 60 x 120s & 30 x 300s
Processed & Annotated: APP (Hα & Oiii), Pixinsight

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