Electronic Telegram No. 5059
Central Bureau for Astronomical Telegrams
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JUPITER
     J. Watanabe, National Astronomical Observatory of Japan; and K. Arimatsu,
The Hakubi Center, Kwasan Observatory, Kyoto University, report the detection
of an optical flash on Jupiter as detected on Oct. 15d13h24m13s UT (time
uncertain by +/- 10 s) in video imaging undertaken by Arimatsu with a 0.279-m
Celestron C11 telescope (+ IMX464 CMOS camera + CH4-band filter) at Kyoto.
The CH4 filter at 889 nm has a bandwidth of 30 nm.  The flash was seen at
longitude 201 degrees (system II) and latitude +20 degrees on Jupiter and
lasted approximately three seconds.  The same flash was simultaneously
detected with another CMOS camera (IMX290 camera + filter with bandpass
500-750 nm) attached to the same telescope through a dichroic mirror.


NOTE: These 'Central Bureau Electronic Telegrams' are sometimes
      superseded by text appearing later in the printed IAU Circulars.

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2021 October 20                  (CBET 5059)              Daniel W. E. Green