Contact information

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

Ursa Astronomical Association

Telescopic comet Schwassmann-Wachmann 1 - 3.10.2021 at 01.56 - 3.10.2021 at 05.12 Orimattila, Artjärvi, Viestikallio Observation number 101721

Visibility III / V

Jorma Ryske, Etelä-Suomen kosmol. seura

In the comet 29P / Schwassmann-Wachmann 1 there is a superburst going mag17 => mag11. It looks a bit like the recent comet 17P / Holmes eruption but in mini size due to the 29P / SW 1 distance. The discharge contains at least CO gas which appears bluish. The figure below also shows one jet 45 "in length PA 270 °. The actual Coma is 60" in diameter and surrounded by a faint teal gas coma 150 "in diameter. Photometrically measured, the brightness of the comet's core is m2 12.85R σ: 0.08896 Aperture radius 6".

Picture 1) RGB bin2 3x15x120s, FoV 36'x29 '

Picture 2) RGB bin2 3x15x120s, crop FoV ~ 10'x8 '

Picture 3) Clear filter bin1 15x120s, crop FoV ~ 10'x8 '

Figure 4) Semrock filter bin2 387nm / 15nm CN 3883Å, 12x300s, crop FoV ~ 10'x8 '

Figure 5) Photometry R-channel 2021-10-02 22:53 - 2021-10-03 00:27 UT



More similar observations
Additional information
  • Observation target
    • Comet
  • Title for the comet
    • Telescopic comet
  • Name of the observation target
    • 29P/Schwassmann-Wachmann 1
  • Brightness in magnitudes
    • 11
  • Tail length
  • 45 arc seconds
  • Coma diameter
  • 60 kaarisekuntia
  • Weather
    • 7C, tuulenpuuskat heiluttivat kaukoputkea, SQM-Clear 21,33

Technical information

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

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