GCN Circular 3449
Subject
XRF050522: Optical Observations
Date
2005-05-22T15:17:07Z (19 years ago)
From
Aaron Price at AAVSO <aaronp@aavso.org>
B. L. Gary (Hereford Arizona Observatory [G95]) and A. Price (AAVSO) report
on behalf of the AAVSO International High Energy Network on early optical
observations of XRF 050522 (GCN 3446; Gotz et al.):
No afterglow candidate is found in the field compared to DSS to a limiting
unfiltered magnitude of 18.7. Observation midpoint time was 06:38 UT (38
minutes after burst) on May 22, 2005. Details of the observation are below
along with a link to the FITS image.
The AAVSO thanks the Curry Foundation for their continued support of the
AAVSO International High Energy Network.
Observer: Bruce Gary (GBL)
Site: Hereford Arizona Observatory (G95)
Location: Sierra Vista, AZ; USA
LatitudeLongitude: +31.45, -110.24
Elevation: 1420 m
Scope: Celestron CGE-1400, 0.35 m SCT
ScopeFocalRatio: f/1.86, 661 mm (prime focus)
CCDVendor: SBIG ST-8XE
CCDDetector: KAF1602E
CCDSize: 1530 x 1020
CCDPixelScale: 2.80 "arc/pixel
CCDFOV: 72 x 48 'arc
Object: GRB050522
ObsDate: 2005.05.22
ObsMidPointTime: 06:38 UT
TimePerFrame: 120 sec
NumberOfFrames: 16
Filters: Clear
Processing: dark/flat/mediancombine
Seeing: 3 "arc FHWM
LimitingMag: 19.0 (SNR=3)
Sky: Clear, calm
afterglowmag: <18.7
afterglowerr:
compstars: All-sky
Report: No new objects present when blinking with DSS image having similar
limiting magnitude, for 20 'arc square FOV centered on GCN 3446 center
coordinates; all stars brighter than 18.7 were accounted for in DSS. Image
made 38 minutes after burst.
comments:
A FITS image has been uploaded to
ftp://ftp.aavso.org/grb/BruceGary_GRB050522_2453512.81830_.fits