[vsnet-campaign-v4641sgr 117] observation of sgrv4641

["Toni Scarmato" <toniscarmato@hotmail.com>]

Dear all,

also if the sky is covered by a slight haze I Have observed again SGRV4641
for 16 minutes beetween
22.30 and 22.46 Local Time with 203 mm SCT, f/10, 140x, unfiltered.

This is a serie of flares detected:

SGRV4641 20020709.852 10.2v TSc "big flare" 1 second
SGRV4641 20020709.854 10.5v TSc "big flare" 1 second
SGRV4641 20020709.857 11.1v TSc flare 5 seconds
SGRV4641 20020709.859 10.0v TSc "big flare" 1 second
SGRV4641 20020709.861 11.1v TSc flare 4 seconds
SGRV4641 20020709.865 10.9v flare 3 seconds

The star is at ~12.5v in quiescence fase.
I Have noted a change in frequency and type of the flares.
Beetwen a flare and other I have no detect variations of brightness with the
big flares very short but very intense
without steady state at intermediate magnitude.
Instead, the less intense flares have had about the same lasting.


Best Regards,

Toni Scarmato

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