Sounds like you animation prog is simply saving each frame completely
rather than just the changes from the previous one. Any options in
your animation programme along those lines?


Yes, I think there are "optimisation" settings. I shall take a look...

--
Brendan DJ Murphy
Rayleigh, Essex, 51:34N 0:36E 30m asl
Castle Point Astronomy Club http://www.cpac.org.uk