TITLE:   GCN CIRCULAR
NUMBER:  16757
SUBJECT: GRB140818B, the review of the sky area in plate archives
DATE:    14/08/30 19:39:14 GMT
FROM:    Valentyna Golovnya at Main Astro Obs,Kyiv  <golov_v@ukr.ne>

V.V. Golovnya (Main Astro Obs, Kyiv) 
report: 
We have undertaken the review of the sky area in vicinity of 
GRB140818B (Vargas et al., GCN 16709; Beardmore et al., 
GCN 16712) on astronegatives, collected in Ukrainian NAS 
Main astronomical observatory plate archive (1976-1996). 
All the plates with the possible object appearance are 
digitized using Microtek ScanMaker 9800XL TMA and Epson Expression 10000XL flatbed scanners and have been 
placed into Golosiiv Plate Archive database DBGPA with open 
access to them. The list of plates is given in the table: 
yyyymmdd/TimeUT --Plates--              Exp. LM  USNOA2 0825 
19910613/222704 GUA040C001802A 22.5 15.9   -11812892 
19910709/205250 GUA040C001826A 23.5 15.7   -11814106 
19820715/175441 TAS040A000284    23.0 17.3   -11812584 
  No any object has been found in the point with the mentioned 
coordinates of GRB. But the image of some object have found near GRB position on the two of selected plates. 
Brighness of the object is estimated as V=15.0 and V=16.5: 
  Plates                   RA,(J2000.0),Dec          V 
GUA040C001802A 18:04:32.08 -01:22:57.0 15.0 
TAS040A000284    18:04:32.63 -01:22:55.6 16.5 
Plates:  
GUA040C–the plates archive identifier of DWA (D/F=400/2000, 
         M=103"/mm) of the Ukrainian NAS Main Astro obs. 
         (Marsden's number - 83) the plate number [1]. 
TAS040A -the plates archive identifier of DAZ (D/F=400/3000, 
         M=68.8"/mm) of the Tashkent Astro obs. 
         (Marsden's number - 186) the plate number [1]. 
Exp.   - Duration of the maximum exposure (minutes). 
LM - Limited V mag, derived in the 2,5 arcmin area around 
       the location given in GCN Circ.16712: 
       RA(J2000): 18h 04m 32.53s, Dec(J2000): -01d 23' 10.6" 
USNOA2 - Comparison star. 
  The preview images of 3 areas together with  
the 2,5x2,5 min.of arc area from SkyMap can be found in  
http://gua.db.ukr-vo.org/img/grb/140818B/index.html 
The images with full resolution are available via e-mail on 
demand. 
References: 
1.L.Pakuliak DATABASE of GOLOSIIV PLATE ARCHIVE (DBGPA V2.0), http://gua.db.ukr-vo.org