Paul.. Still having guiding troubles with the EM400 are you? stars look a little bit eggish.. Apart from that its a great effort with only 20mins of data!
Come up well considering just 2 X 10 min subs. Guiding still seems to be giving you grief. Must be a fix for it some how. Your camera seems to be sensitive enough as this is not an easy target with the Tak.
yes I am still having problems with guiding but like I said I think I have a fix. Stars start out looking good at about 45 degrees up, however as the mount moves higher and rotates further in RA the stars start becoming elongated. From what I have read and heard this is flexure. So I am using an under and over setup rather than a side by side setup.
Stand by for better image and with a lot more subs.