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Ursa Astronomical Association
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Ursa Astronomical Association

Telescopic comet Arend - 12.9.2015 at 01.26 - 12.9.2015 at 01.54 Orimattila, Artjärvi, Tähtikallio Observation number 42513

Visibility I / V

Kari Laihia, Veikko Mäkelä and Hannu Määttänen filmed a very dim comet on the Tähtikallio Alluna telescope on the first night of the DS meeting. The comet was not yet found at the shooting stage, but the correct location was photographed based on the star map. Samuli Vuorinen's reading of the pictures then revealed that a dim haze was found. In the main image of the observation, the partial exposures are aligned according to the comet, in the second image according to the stars.

Unfortunately, the flat calibration images could not be taken, so there was some unevenness and dust balls left in the images.

Based on the pages of Seiichi Yoshida, the brightness of the comet is currently around 18 magnitude. Is this the dimest comet observed in Finland?

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Additional information
  • Observation target
    • Comet
  • Name of the observation target
    • 50P/Arend
    • Erittäin heikosti näkyvä
  • Brightness in magnitudes
    • 18
  • Visibility of the comet
    • Telescopic comet
Technical information

Alluna RC 16 ", SBIG STL-1001E, 10x180s.

Comments: 2 pcs
Emma Bruus - 12.9.2015 at 23.35 Report this

Vau, upea havainto!

Veikko Mäkelä - 13.9.2015 at 01.12 Report this

Taitaa olla yksi niitä himmeimpiä komeettoja, joita Vahtiin on raportoitu.  Kiitokset Samulille käsittelystä.

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