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Ursa Astronomical Association

3122 Florence - 1.9.2017 at 23.42 - 2.9.2017 at 00.21 Imatra Observation number 66656

Visibility III / V

Rauno Paivinen, Etelä-Karjalan nova

Asteroid 3122 Florence photographed during a close pass on September 1, 2017 in the evening. The sky brightened appropriately for a few hours and I was able to capture this asteroid. I took 155 10 s exposures. The photometric measurement with the astroart program gave a brightness value that was a little too bright, i.e. 8.4mag, in reality that probably was somewhere around 8.9mag.

Seeing was pretty bad and probably because the stars have facets

Below is a video compiled and uploaded to youtube

Additional information
  • Observation target
    • Asteroid
  • Name of the observation target
    • 3122 Florence
    • Keskitaso
  • Seeing
    • Mediocre
Technical information

Celestron C14. Optec 0.5X reducer. Atik 460EX camera. IDAS LPS-2 light pollution filter. 155 pcs 10s exposures

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