Yes, I have shot the Pleiades many times before. Still, a nice test of the new camera. I was limited to short exposures, 2 minutes in this case, as I was not setup for guiding. I took more frames instead, over thirty exposures of two minutes each for an hour total. After throwing a few out I still had enough to beat down the noise. I expect that with guiding and longer exposures the result would be better, but this wasn’t too bad…
![Pleiades](http://darkerview.com/wordpress/wp-content/uploads/2013/01/M45-20110924-600x400.jpg)
Without guiding how did you manage to eliminate movement? In two minute exposures there should be trails not pinpoints.
I was on a tracking mount, actually the top of a NexStar GPS 11″. I was not guiding, but it was tracking, though not perfectly. I did have to throw out a half a dozen images spoiled by wind or tracking issues in the mount.
Next time out (Thanksgiving weekend?) I have to add the guide camera to eliminate those last errors.