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Contact information

Ursa Astronomical Association
Kopernikuksentie 1
00130 Helsinki

Ursa Astronomical Association

Telescopic comet ISON - 14.3.2013 at 22.03 Lumijoki Observation number 13434

Visibility I / V

Veijo Kallio, Oulun Arktos

The subject appears in the attached magnification as a comet approximately in the center of the image. However, the length of the tail is only about 15 seconds of arc.

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Additional information
  • Name of the observation target
    • C/2012 S1 (ISON)
    • 0.004
    • degrees
  • Observation target
    • Comet
    • Erittäin heikosti näkyvä
  • Visibility of the comet
    • Telescopic comet
  • Tail length
  • 0.004
Technical information

Newton 40cm / 3.1 (Coma corrector + Reducer), Atik 16HR CCD

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