GCN Circular 37023

U.Quadri, L.Strabla and P.Madurini (Bassano Bresciano Astronomical Observatory)

Members of: 
AAVSO - American Association of Variable Star Observers.
UAI/SSV - Unione Astrofili Italiani/SSV-GRB section.
GAC - Gruppo Astrofili Cremonesi.

In a large collaboration with:
M.G. Dainotti (National Astronomical Observatory of Japan), 
Y. Niino (Tokyo University, Institute of Astronomy), 
K. Kalinowski (Aarhus University, Department of Physics and Astronomy),
B. De Simone (Universita' degli Studi Di Salerno)
report:

We imaged the field of EP240802A detected by the Wide-field X-ray Telescope (WXT) 
on board the Einstein Probe (EP) mission with the robotic telescope of the
(IAU station 565) Bassano Bresciano Observatory, Italy.
The observations started 34.31 hour after the trigger, At the end of twilight, 
with our Newton telescope D=450 mm F/D=4.5.

Weather conditions were good.

We co-added 2 series of 45 exposures of 60 sec each.

  Start T0+      End T0+      Vlim
  34.31 hour   34.88 hour     20.5
  34.88 hour   35.45 hour     20.5


We did not found any optical counterpart in the error box of the XRTcandidate.
Wang et al. (GCN 37019
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 ), A. Aryan et al.(GCN 37021
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 ).

Magnitudes were estimated with the pan-STARRS cat. 
and are derived using Lupton (2005) equations.
Not corrected for galactic dust extinction.

Reference:
http://www.osservatoriobassano.org

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