J-GEM conducted Subaru / Hyper Suprime-Cam imaging observation for an electromagnetic counterpart to GW170817 (Tominaga et al. submitted). In this web page, we release interactive map of the surveyed image in collaboration with NAOJ / HSC project. Let's experience feeling of a GW hunter!
Do you find it? Your answer can be confirmed if you click GW170817 from the "bookmarks" menu.
If you find the optical counterpart, you should check variability. By hitting Shift+g, the image is changed to images obtained in 8/18, 19, 25, 27, accordingly.