OK thanks for your reply. I'd have some more trade for you, but I can't get the other software to work on my Linux system, which means I can't get a date. It all gets a bit complicated if I have to use an old Windows 10 machine as well as two software programs, of which the other software freezes on contact with HSC frames. Annoying... Still, Zooites reported 14 supernovae thanks to AstroImageJ.
(Also, finding the actual FITS image in the HSC database is just difficult). Best regards, Richard.