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Skywarden,
Ursa Astronomical Association
Kopernikuksentie 1
00130 Helsinki
taivaanvahti(at)ursa.fi

Ursa Astronomical Association

Transit of mercury - 9.5.2016 at 15.52 Espoo Observation number 52566

Visibility IV / V

Jouko Markkanen, Ursa (Helsinki)

Because the sky was clear, I looked at the sky and lo and behold, Mercury was lying there just in front of the Sun. Also a spectacular comma group on the surface of the sun.

The intense thermal ripple hampered the observation a bit, but for once it was a completely cloudless sky!



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Additional information
  • Observation target
    • Transit of Mercury
    • Näyttävä
  • Seeing
    • Average
Technical information

The image was taken through a Questar 3 "payload cassegrain telescope (effective focal length about 1500mm), with a Canon EOS 7Dmk2 camera, using Questar's own solar filter (no more specific specs are available right now).

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