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The Toucam can be modified to take long exposures (about $150 I think) which enable it to take images as long as you want. Even hours if you like the look of hot pixels
and the Meade LPI can take exposures up to 30 seconds (correct me if I am wrong please) and I think the Neximage can also take long exposure (about 15 - 30 seconds).
The long exposure mod is a conversion done to a Toucam. Yes it can be reversed simply by unsoldering the modification, but why would you want to. I have heard of people in Cloudy Nights doing the conversion themselves, but it is very fiddly. Best left to the right electronics bloke.
The capture program I use is 'Desire' (free download) but there are others.
As far as Neximage goes, might be worth googling 'Neximage long exposure' and see what others say about it. I can only help with the Toucam.
Yep, the Toucam takes great images without a scope. Just pop it on the baby tripod supplied or mount it on a mount with tracking, set the exposure time to whatever you want, and press start. Bingo! One long exposure widefield pic. Easy stuff.
You can also take multiples and stack them (I am yet to learn this).
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