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GCN Circular 36133

GRB 240414A: GAD Observatory, La Spezia, Italy ,upper limit
2024-04-16T10:25:27Z (2 months ago)
Claudio Lopresti <>
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Claudio Lopresti (Gruppo Astronomia Digitale - GAD Observatory, La Spezia, Italy)
Member of:
UAI/SSV - Unione Astrofili Italiani/sezione stelle variabili, GRB section.
GAD - Gruppo Astronomia Digitale.

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), Unione Astrofili Italiani (UAI)

We imaged the field of GRB 240414Adetected by SWIFT(trigger 1221714)
with the telescope LX200 12” of GAD Observatory, La Spezia, Italy

The observations started 1026 min after the GRB trigger,
with a Shmidt-Cassegrain telescope D=304 mm with reducer F/D=4.75.
at the following position (+/- 2 arcsec):

RA (J2000): 12h 19m 8.07s
Dec (J2000): +56d 44' 26.0"

scope D=300 mm F/D=4.8.

Weather conditions were medium.

The observation with a series of exposures started at 024-04-14 19:28:17 UT
and ended at 2024-04-14 22:27:10 UT

We co-added 88 exposures of 90 sec each.

Start T0+         End T0+        R lim
1026 min        1205 min      19,9

We did not found any optical counterpart in 12h 19m 8.07s +56d 44' 26.0" position and in the error box of the XRT  candidate.
ref.: K.L. Page at U Leicester GCN 36083

Magnitudes were estimated with the Gaia EDR3 cat. and
are not corrected for galactic dust extinction.


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