TITLE: GCN CIRCULAR NUMBER: 25397 SUBJECT: LIGO/Virgo S190814bv: No candidates from image subtraction in DCT galaxy targeted search DATE: 19/08/19 02:01:19 GMT FROM: Simone Dichiara at UMCP/NASA/GSFC S.Dichiara (UMD, NASA-GSFC), E. Troja (UMD, NASA-GSFC), S.B. Cenko (NASA-GSFC), P. Gatkine (UMD), A. Kutyrev (UMD, NASA-GSFC), J.M. Durbak (UMD), S. Veilleux (UMD), Gabriele Minervini (INAF-IAPS), Roberto Ricci (IRA Bologna) report on behalf of a larger collaboration: We reobserved the fields listed in GCN 25374 using the Large Monolithic Imager (LMI) on the 4.3m Discovery Channel Telescope (DCT) at Happy Jack, AZ. Observations started on August 18, 10:09:02 UTC (about 3.54 days after the detection) with SDSS i filter. We do not find any obvious transient source down to i~21 AB mag for objects within the galaxy, and i~22 AB mag for field objects. We also observed the DECam-GROWTH candidates DG19qabkc and DG19wgmjc (Andreoni et al., GCN Circ. 25362; Goldstein et al., GCN Circ. 25391) in i and z band. Both objects are detected with i~21 AB mag, although photometric measurements are contaminated by host galaxy light. We thank the staff of the Discovery Channel Telescope in particular Ana Hayslip for assistance with these observations.