Contact information

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

Ursa Astronomical Association

Binocular comet Churyumov-Gerasimenko - 11.11.2021 at 01.30 - 11.11.2021 at 04.30 Orimattila, Artjärvi, Viestikallio Observation number 102218

Visibility III / V

Jorma Ryske, Etelä-Suomen kosmol. seura

I tried to make the comet 67P / Churyumov-Gerasimenko dust dust / dust trail more clearly visible with a longer exposure time of 30 minutes than with a 5-minute exposure taken two days earlier https://www.taivaanvahti.fi/observations/show/102096 .

The dust trail was now dimmer. The transparency of the atmosphere may not have been as good as the 8.11.2021 observation or the dust trail is but dimmer because there are two more days on the perihelist. However, the dust / dust trail stands out in front of the comet's core, continuing beyond the image. The first negative image has normal exposure stacking of 20x90 seconds (2021-11-10 23: 33UT), and the second image has reduced stars in the image processing process.



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Additional information
  • Observation target
    • Comet
  • Title for the comet
    • Binocular comet
  • Name of the observation target
    • 67P/Churyumov-Gerasimenko
  • Brightness in magnitudes
    • 9
Technical information

TS 305 / 1200mm Newton, TS KomakorrF4, QSI690 / ICX814, filter Baader Clear, Semrock CN 387nm / 15nm, Astrodon RGB Gen2, mount CEM60. FoV 36 'x 28'. North up, east left.

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