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Hi Jethro, welcome to IIS
While the ETX line of scopes track, they are fork mounted Alt Az scopes so they are not suitable for long exposure imaging as you will get major field rotation in long exposure images.
While in theory they can be mounted on a wedge they are not particularly good for that. I had a little ETX for a while and it simply did not like being on a wedge, the motors and gears simply were not robust enough.
They may well have improved since then but to my knowledge there is almost no imaging being done with these scopes.
Astro imaging is an endeavour that is hard to do cheaply, especially if we are talking about long exposure deep sky imaging. That said there are several areas of astro imaging that can utilise your existing equipment, eg star trails, nightscapes and time lapse imaging, afocal lunar, white light solar with a solar filter attached to your tele lense etc.
Malcolm
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