Played around with the lowres imager IC - too slow for a reasonable use.
I will change it to a 640x480 camera. The problem of this cam is the availabilty. I ordered some stock and will stock up for the future use, at least to have enough for the devkits and the launch.
The good news: This camera is already part of the TRSI-Sat, so the TRSI.-Sat will melt into the CHIPSTAR. The code is already working, so the change will be a quite easy task - there will be just some delay.