GCN Circular 3370
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: firstname.lastname@example.org 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.