Exposures start date:
2012-03-26
Exposures start time: 22:40:10 U.T.C.
Telescope:
Schmidt D=320 mm F/3.1 - Mag. Lim= 20.6
Observers:
U.Quadri, L.Strabla, R.Girelli, A.Quadri
This page was automatically created in real time by telescope facility.
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Exposures start date:
2012-03-26 Telescope: Observers: |
Informations from GCN notice:
TRIGGER_NUM: 518626,
NOTICE_DATE: Mon 26 Mar 12 01:20:49 UT
GRB_RA: 273.925d {+18h 15m 42s} (J2000)
GRB_DEC: +69.278d {+69d 16' 41"} (J2000)
GRB_ERROR: 3.00 [arcmin radius, statistical only]
GRB_DATE: 16012 TJD; 86 DOY; 12/03/26
GRB_TIME: 4829.28 SOD {01:20:29.28} UT
This is a GRB
Observers notes: (these notes are added by observers at the end of followup)
GRB120326A was observed at Bassano Bresciano Observatory (565) for 3 nights covering 8 hours span.
Photometric measurements have been done using the telescope Schmidt 0.32m F/3.1. and
Starlight CCD camera HX-516 applied at direct focus. 120 sec. exposure time and 2x2 binning
were used for all photos. All exposure were unfiltered.
Every night flat field and dark have been captured and all images were corrected with them.
In order to capture faint objects 60 shots was added before measurement
MPO Canopus version 10.4.0.20 was used to perform differential photometry on the reduced images.
These are comparison star used:
Unfiltered CCD magnitude
------------------------- -----------------
Date UTC Mag. GSC1.2 STARS USED
------------------------- -----------------
2012 03 26.94456 18.75 ID: 0442901998
2012 03 26.96648 18.70 ID: 0442901953
2012 03 26.98842 18.70 ID: 0442902070
ID: 0442901970
2012 03 27.01038 18.80
2012 03 27.03232 18.70
2012 03 27.05427 18.80
2012 03 27.07624 18.85
2012 03 27.10038 18.95
2012 03 28.03167 19.30
2012 03 28.05361 19.48
2012 03 28.05362 19.41
2012 03 28.07558 19.52
2012 03 29.02885 19.77
2012 03 29.04972 19.91
2012 03 29.07231 19.93
2012 03 29.09504 20.00
2012 03 29.10332 19.98
The observations:
had started 5d 19h 49m after the burst (2012-03-31 at 21h 08m UTC)
and ended 6d 00h 33m after the burst (2012-04-01 at 01h 51m UTC)
We co-added 40 exposures of 300s each captured at telescope D=508 mm F/D=5 of (IAU station B11), Italy
RESULTS:
We detected very faint optical couterpart of 21.8 (+/- 0.1) unfiltered CCD magnitude.
