TITLE:   GCN GRB OBSERVATION REPORT
NUMBER:  3370
SUBJECT: GRB050505: AAVSO observations
DATE:    05/05/06 13:31:30 GMT
FROM:    Arne A. Henden at AAVSO  <arne@aavso.org>

D. Hohman (Stone Edge Observatory), A. Henden (AAVSO) and A. Price (AAVSO) 
report on behalf of the AAVSO International High Energy Network on
optical observations of GRB050505 (GCN #3360, Hurkett et al.):

No afterglow candidate is found in the field or at the location of
the afterglow reported by Cenko et al. (GCN 3366) to a limiting
unfiltered (R-like) magnitude of 18.5 using USNO-A2.0 reference
stars. Observation midpoint time was 02:19 UT on May 6, 2005
(2.9hrs after burst). Details of the observation are below along
with a link to the FITS image.  The unfiltered observations have
significant Rc/Ic contribution and so are complementary to the
UVOT observations reported by Rosen, et al. (GCN 3367).

 Name: Dennis Hohman
 email: dennishohman@adelphia.net
 Observer: Dennis Hohman
 Site: Stone Edge Observatory
 Location: Orchard park, NY
 LatitudeLongitude: -78.75, 42.76
 Elevation: 950 ft
 Scope: C8
 ScopeFocalRatio: 6.1
 CCDVendor: ST7XME
 CCDDetector: KAF401E
 CCDSize: 382x255
 CCDPixelScale: 3.0
 CCDFOV: 12.9x19.4
 Object: GRB050505
 ObsDate: 05/06/05
 ObsMidPointTime: 02:19
 TimePerFrame: 240 sec
 NumberOfFrames: 7
 Filters: CR
 Processing: Flatfield,Dark sub, avg
 Seeing: 3.8
 LimitingMag: 18.7
 Sky: Clear, some high clouds
 afterglowmag: 
 afterglowerr: 
 compstars: 
 Report: Entire error circle covered. No new object visible to
   estimated mag 18.5
 comments: 

A FITS image has been uploaded to ftp://ftp.aavso.org/grb/DennisHohman_GRB050505_2453496.67896_.fits 

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