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

Ursa Astronomical Association

Telescopic comet Churyumov-Gerasimenko - 9.11.2021 at 01.23 - 9.11.2021 at 05.00 Orimattila, Artjärvi, Viestikallio Observation number 102096

Visibility III / V

Jorma Ryske, Etelä-Suomen kosmol. seura

The comet 67P / Churyumov-Gerasimenko shows both the normal tail and the interesting dust trail in front of the comet in the negative images below. The dust trail has comet particles about 0.1 mm to 1 cm in size left by the comet in previous rounds. If the Earth went through this dustbin, it would show great stellar flights, but the Earth's orbit and the 67P / CG's orbits would not meet, unfortunately or fortunately.

Figure 1) 5x60s Clear filter from 2021-11-09_02: 33UT

Figure 2) Stacked 4 pcs 5x60s Clear filter from 2021-11-08_23: 33 UT, taken every hour. Stars reduced by image processing for clearer dustiness.

Image / Animation 3) 4 pcs framea 5x60s Clear filter from 2021-11-08_23: 33 UT, framet every hour

Figure 4) CN filter 387nm Figure 10x300s from 2021-11-09 00:42 UT, FoV 12'x12 '

Figure 5) CN filter 387nm CometCIEF AzimuthalMedia processed Figure 4, FoV 12 '



More similar observations
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
  • 25 arc minutes
  • Coma diameter
  • 10 kaariminuuttia
  • Weather
    • -5C

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.

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

Comments: 3 pcs
Tapio Lahtinen - 9.11.2021 at 20.53 Report this

Komea piikki.

Näissä ei käyttänyt CN-filsua?

Jorma Ryske - 9.11.2021 at 23.01 Report this

Kuvasin myös CN-filtterillä, yhteensä 3x50min valotukset. Niissä ei kuitenkaan näkynyt mitään kovin dramaattista CN suihkujen rakennetta. Ohessa lisäsin yhden CN 3883Å emission10x5min valotuksen kuvassa 4, cropattu kuvakenttä 12'. Kuvassa 5 on sama prosessoituna CometCIEFillä, siinä erottuu "taaksepäin" kaareutuva levenevä CN suihku alkaen suunnasta PA ~100deg.

Harri Kiiskinen - 10.11.2021 at 08.04 Report this

Hieno havainto tuo pölyvana. Pitääpäs kaivella, josko näkyisi myös Hankasalmelta otetuissa kuvissa. 

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