Michael Sidonio: Cosmic Dolphin (SH2-308) Poster
Michael Sidonio: Cosmic Dolphin (SH2-308) Poster
Michael Sidonio: Cosmic Dolphin (SH2-308) Poster
Michael Sidonio: Cosmic Dolphin (SH2-308) Poster
Michael Sidonio: Cosmic Dolphin (SH2-308) Poster
Michael Sidonio: Cosmic Dolphin (SH2-308) Poster
Michael Sidonio: Cosmic Dolphin (SH2-308) Poster
Michael Sidonio: Cosmic Dolphin (SH2-308) Poster
Michael Sidonio: Cosmic Dolphin (SH2-308) Poster
Michael Sidonio: Cosmic Dolphin (SH2-308) Poster
Michael Sidonio: Cosmic Dolphin (SH2-308) Poster
Michael Sidonio: Cosmic Dolphin (SH2-308) Poster
Michael Sidonio: Cosmic Dolphin (SH2-308) Poster
Michael Sidonio: Cosmic Dolphin (SH2-308) Poster

Michael Sidonio: Cosmic Dolphin (SH2-308) Poster

🚀 Premium Astrography™ Print
Rated 4.9 out of 5
Based on 56 reviews
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$59.00 $32.45
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    Michael Sidonio, also known as "Strongmanmike," is a well-known Australian amateur astronomer and astrophotographer with a background in strength athletics. He studied astronomy at Dickson College and worked at the Canberra Observatory for over a decade. After retiring from strongman competitions in 2005, Michael focused on astronomy and astrophotography. His work has been featured in various exhibitions worldwide and has won numerous awards.

    Michael has made significant contributions to astronomy research, including discovering a galaxy 11 million light-years away. His astrophotography is displayed at Australia's National Science and Technology Centre in Canberra. Michael recently completed the construction of the highest astronomical observatory in Australia, located in the Tinderry Mountains.

    Cosmic Dolphin (SH2-308) in Canis Major by Michael Sidonio

    Sitting in a rich field of OIII and Halpha emission nebulae, a remarkable and beautiful, striated, teal-coloured, almost perfectly spherical, bubble, is being blown in the interstellar medium by the intense stellar wind from a very hot and massive Wolf-Rayet star at its center. 

    Wolf-Rayet stars have surface temperatures of between 30 000K and 210 000 K, compared to our Sun, which has a surface temperature of just 5800K!

    Photo details & setup

    Data collected over 5 nights: 8, 9, 15, 16, and 18 Jan 2020

    Setup

    • Takahashi FSQ106EDX4
    • FLI Proline 16803, CFW-5-7, Robofocus
    • HaOIIIRGB = 525 555 140 140 160min = 25.3hrs total exposure (bin 1X1)
    • New Deep-Sky RGB Astronomik filters
    • -30C chip temp, dark frames and flats (using Aurora Flat Field Panel) applied
    • Focal length 530mm, FOV = 4deg X 4deg
    • Image scale 3.5"/pix
    • Guide Camera: Starlight Xpress Lodestar

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