TITLE: GCN CIRCULAR NUMBER: 6308 SUBJECT: GRB 070419A: Kiso Optical observation DATE: 07/04/19 13:29:46 GMT FROM: Yuji Urata at Saitama U S. Nishiura, H. Tomita, Y. Urata and K.Y. Huang report on behalf of EAFON team "We have imaged the GRB 070419A field (Stamatikos et al. #6302) with the Kiso 1.05m Schmidt telescope. The optical afterglow reported by Chornock et al (#6304) and Cenko et al. (#6306) is visible in our B and R band images. We also confirmed the decaying during our observation. The afterglow brightness at 51 min after the burst is R~20.1 mag." Further observations and analysis are in progress.