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Ursa Astronomical Association

Binocular comet Leonard - 27.11.2021 at 05.48 - 27.11.2021 at 06.02 Lohja Observation number 102713

Visibility I / V

Jari Virtanen, Ursa (Etelä-Suomi)

Saturday morning, November 27, was starry for a long time. Leonard estimates appear in the area between the tall pine trees. I positioned the axis of the tracker in the direction of the North Star and took a few pictures. Leonard was pretty clear in them. I put the camera to take 62 pictures with a child. After stacking, the comet is greenish in the picture and the tail is about 0.7 degrees. The magnitude was estimated to be 7.5-7.8. The title image (approximately 5.5 degrees to its edge) also shows NGC 4631 and NGC 4656.

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Additional information
  • Observation target
    • Comet
  • Title for the comet
    • Binocular comet
  • Name of the observation target
    • C/2021 A1 (Leonard)
  • Brightness in magnitudes
    • 7.7
  • Tail length
  • 0.7 degrees
  • Coma diameter
  • 0.2 astetta
Technical information

Nikon D7500, 85 mm lens, f / 2.8, large 800, 62 x 13 s = 13 m 26 s, SLIK Astra ECH-630 tracker. DSS. R, G and B processing separately in Photoshop, final processing in Lightroom.

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