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Contact information

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

Ursa Astronomical Association

Telescopic comet Churyumov-Gerasimenko - 5.12.2021 at 01.00 - 5.12.2021 at 04.09 Orimattila, Artjärvi, Viestikallio Observation number 102974

Visibility III / V

Jorma Ryske, Etelä-Suomen kosmol. seura

The comet 67P / Churyumov-Gerasimenko still dimly shows the dust trail accumulated from previous rounds of the comet in front of the core. My previous observation on this was 11/11/2021 https://www.taivaanvahti.fi/observations/show/102218

Picture 1) 30x30s Clear filter, stacked according to the stars, exposures from 2021-12-04_2257UT

Figure 2) R filter 660nm / 70nm Figure 10x90s 2021-12-04_2318UT

Figure 3) R filter CometCIEF processed. In addition to the tail, a particle jet directed to the lower left PA120 ° is distinguished

Figure 4) CN filter 387nm / 15nm cyanide radical emission 3883Å Figure 24x300s 2021-12-05_0011UT

Figure 5) CN image CometCIEF processed. Distinguished by a powerful CN gas wide jet in the PA140 ° direction



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Additional information
  • Observation target
    • Comet
  • Title for the comet
    • Telescopic comet
  • Name of the observation target
    • 67P/Churyumov-Gerasimenko
  • Brightness in magnitudes
    • 9
  • Tail length
  • 30 arc minutes
  • Coma diameter
  • 8 kaariminuuttia
  • Weather
    • -15C

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.

Samarasinha, NH, Martin, MP, Larson, S. M, 2013. CometCIEF Cometary Coma Image Enhancement Facility, http://www.psi.edu/research/cometimen

Comments: 2 pcs
Tapio Lahtinen - 7.12.2021 at 21.44 Report this

Mielenkiintoinen tuo 'etupyrstö'.
Koitin sitä saada omiinkin kuviiin mutta ei onnistunut.

Jorma Ryske - 7.12.2021 at 23.48 Report this

Tuota dust trailia on Japanissa Katsumi Yoshimoto saanut 3.12.2021 pienellä 77mm linssiputkella näkyviin todellä pitkästi yli 10 asteen verran 67P/C-G:n perässä @katsumi_comet_67P

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