The resolution of the "full disk" (i.e. whole earth) natural color images appears to be 11000x11000 pixels every 10 minutes. I can't find any realtime access to these images though - could anyone else?
They do have a cloud service for disseminating the imagery, but only for "official use":
"Until Himawari-8 becomes operational, NMHSs wishing to release Himawari-8 data and products to the public are requested to consult with JMA beforehand."
Edit: Here is at least a tile-zoomer with some sort of realtime access to high-res imagery: http://himawari8.nict.go.jp/
These are great! I've been looking for something like this for a long time and I could never find anything out of NOAA that had this kind of time resolution. Here about a big storm on the east coast? What does it look like from space? Gotta wait to see whether someone will do a press release.
You might find http://realearth.ssec.wisc.edu/ useful. Just be sure to click on either the "Presets" or "All" tabs within the "Layers" section.
Oh, and if you decide to use the animation feature just try to be patient with the way it loads in the individual times--once you've pulled down everything the animation should look a good bit nicer.
They do have a cloud service for disseminating the imagery, but only for "official use":
http://www.data.jma.go.jp/mscweb/en/himawari89/cloud_service...
"Until Himawari-8 becomes operational, NMHSs wishing to release Himawari-8 data and products to the public are requested to consult with JMA beforehand."
Edit: Here is at least a tile-zoomer with some sort of realtime access to high-res imagery: http://himawari8.nict.go.jp/