Yes, it is possible to get a DSO image from a Dobsonian scope without an equatorial platform for tracking,  but I wouldn’t want to have to do it too many times!   lol.

Keeping the object in the field of view is tough.   Dealing with hundreds of images and only 25% are usable is a pain.   Plus, you have to manually pick and sort them, which is even worse.  And after all that effort, you get such meager results like the above?   Yeah, like I already said… I wouldn’t want to do this more than I have to.   🙂