[vsnet-grb-info 2037] GRB050824, I-band imaging

[GCN Circulars]

TITLE:   GCN GRB OBSERVATION REPORT
NUMBER:  3876
SUBJECT: GRB050824, I-band imaging
DATE:    05/08/25 16:13:00 GMT
FROM:    Arne A. Henden at AAVSO  <arne at aavso.org>

D. Hohman (Stone Edge Observatory, NY) reports on behalf of
the AAVSO International High Energy Network on optical observations
of the Swift burst GRB050824 (Campana et al., GCN3866).
Images taken with a 20cm SCT and Ic filter with midpoint time
of 050825 0530UT (6.3hrs after the burst) do not show
any object at the candidate afterglow location by Gorosabel
et al. (GCN3865) down to the DSS-2 N-plate limit (about I=18).
The full report is given below.

The AAVSO thanks the Curry Foundation for support of the
AAVSO International High Energy Network.
---------------------------

Report filed on Thu Aug 25 08:37:34 2005:

 Name: Dennis Hohman
 email: dhohman at txrx.com
 Observer: HDF
 Site: Stone Edge Observatory
 Location: Orchard Park, NY
 LatitudeLongitude: 
 Elevation: 275 meters
 Scope: SCT 20 cm
 ScopeFocalRatio: F5.9
 CCDVendor: ST7XME
 CCDDetector: KAF402E
 CCDSize: 752x512
 CCDPixelScale: 1.5
 CCDFOV: 13x19 arc min
 Object: 050824
 ObsDate: 08/25/05
 ObsMidPointTime: 05:30
 TimePerFrame: 240 sec
 NumberOfFrames: 13
 Filters: I
 Processing: Flats/Darks/coadd
 Seeing: 4 - 4.5
 LimitingMag: 
 Sky: Clear
 afterglowmag: 
 afterglowerr: 
 compstars: 
 Report: Full error circle covered. No new object to the limit of the POSS2/UKSTU IR plate.
 comments: 

A FITS image has been uploaded to ftp://ftp.aavso.org/grb/DennisHohman_050824_2453608.02609_.fits