Observation by tprystavski: Bright and fast (motion 6.94"/min) ...

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BAA Comet Section

Observer

tprystavski

Observed

2023 Jul 11 - 00:00

Uploaded

2023 Jul 12 - 19:55

Objects

C/2021 T4 (Lemmon)

Full filename

2021t4/2021t4_20230711_tprystavski.jpg

Target name

C/2021 T4 (Lemmon)

Title

Bright and fast (motion 6.94"/min) comet C/2021 T4 (Lemmon). I took 30 very short exposures, 20 sec. each and I think both dust and ion tails are visible. Very uncertain of an ion tail length (6' or more). Nuclear brightness m2=13.5. Comet C/2021 T4 (Lemmon) 2023 Jul. 11.58 UT m2=13.5 Dia.=&9' Tails= &6' in PA 48 deg (dust); &6' in PA 275 deg (ion)... [T33] 0.3-m f/9 reflector + CCD... © T. Prystavski (iTelescope observatory, Q62 (remotely from Siding Spring, Australia))

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2021t4_20230711_tprystavski.jpg (769.6 kB)

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