I have taken a lot of dark frames at various ISO settings and at room temperature and cooled with the 5DH and with and without INCNR ( in camera noise reduction). This has taken some time and it will take some time to put up a coherent display of images. It has taken all night and day but I have learned a lot. Will post tomorrow. Sorry but good science takes time.
Bert
Here is a teaser a 30 minute exposure at 1600 ISO at about 5 deg C with ICNR.
Here is a 30 sec exposure at 1600 ISO at room (17C) temperature comet Lovejoy should be quite obvious
exif data should be intact.