TITLE:   GCN CIRCULAR
NUMBER:  19384
SUBJECT: GRB 160417A, the review of the sky area in plate archive
DATE:    16/05/04 20:55:29 GMT
FROM:    Valentyna Golovnya at Main Astro Obs,Kyiv  <golov_v@ukr.net>

V. V. Golovnia (Main Astro Obs., Kyiv)
report:
We have undertaken the review of the sky area of GRB 160417A (J.P. Osborne
et al. GCN Circ. 19318) on astronegatives, collected in Ukrainian plate
archive (1976-1996). All the plates with the possible object appearance are
digitized using Epson Expression 10000XL flatbed scanner and the images
have been placed into Golosiiv Plate Archive database DBGPA with open
access to them. The list of plates is given in the table:

yyyymmdd/TstartUT- ---Plates--- -Exp. Mag --USNO-A2--
19930202/21:16:48 GUA040C002102 18.9 14.8 0975-05657018
19930216/20:33:08 GUA040C002131 19.5 16.0 0975-05654878
19930312/18:39:20 GUA040C002146 22.5 15.3 0975-05651231

Plates -the plates archive identifier of DWA D/F=400/2000, M=103"/mm
(Marsden's number - 083) the plate number [1].
Exp. - Duration of the maximum exposures (minutes).
Mag - Limited Bmag, derived in the 9 minutes area around the location
given in J.P. Osborne et al.(GCN Circ. 19318):
RA(J2000): 08h 01m 01.64s, Dec(J2000): +07d 39' 46.1".
USNO-A2 - Comparison star.
The preview images of 3 areas together with the 9 min. of arc area
from Aladin can be found in
http://gua.db.ukr-vo.org/img/grb/160417A/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.