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E,
I read here that you have a dob so long exposures would be out unless you mount thetelescope to a tracking mount.
Some of the best pictures of the moon I have taken were done holding a simple point and click digi camera up to the eyepiece on a dob and moving it in and out till I got focus and then clicking away - as mentioned this is afocal photography and was free.
You can get a mount to hold your digicamera up to the eyepiece - between $40 and $70 fro memory but in my experience they were pretty fiddly - the brackets attach to the scope around the eyepiece and then you mount the camera to the platform on them and can slide it in and out for focus.
If you're after moon shots try afocal first. In my humble opinion too, walk before you run. Astrophotography is great fun but can be terribly frustrating and expensive. We are often suckered into believeing we can take great shots because we see so many amazing shots here and elsewhere on the web - it is of course possible but takes lots of patience, the right gear and plenty of practice.
I guess you could try prime focus - explained in other posts here - that requires the T adaptor etc of something like Orion - I have seen some pretty reasonable 4 sec exposures at 3200 ISO recently.
cheers and good luck - post a shot when you nab one!
niko
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