Doesn't the 400D do live view? I've been using live view on a nearby star to focus and then slew back to the object and take a few longish shots to frame it. I've found a bright star is no good to focus on, a star that just shows in live view is best.
I've been looking at robofocus, they make one for the vixen, but it's pretty expensive (about $500) plus I have a 7:1 knob on the scope as it is and that works just fine so I can't justify the expense at the moment. Maybe when I want to shoot for several hours at a time.
Photoshop is the problem for me, I have access to the techniques but knowing when it's best to use them is the problem. That's just experience I suppose.
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