Hi Mike. well I figured that I was wasting an hour or more every night just waiting for the scope to cool, the twilight to go away and the seeing to settle down - wasted time that will never come around again. So I used a 7nm Ha, mainly in twilight and a bit of moonlight over a month or so and got well over 10 hours of very variable data - about half was usable. combined that with about an hour of O3 taken on a clear moon free night and ended up with a "nearly for free" image that is technically mediocre, but of an object of interest
. Started imaging as soon as it was dark enough that the guider would work and used 10 minute subs that were short enough that the focus did not vary too much through the exposures.
regards Ray