You should buy a motorized tracking mount that can look onto objects if you are really into astrophotography. Tracking them by hand is hard as fuck (as I'm sure you know by now), and if you want to really have the long exposure times you need to get the best pictures, the telescope needs to be following the object to a T.
Other than that, if you do get a motorized tracking mount, you could try taking several long exposure time pictures of the same item, and use photoshop to superimpose the images on top of each other. It will greatly improve the quality (and you could also do some colour correction and increase saturation and stuff if you want. I really don't know stuff photoshop.)
Of course, your pictures are really great, but I'm just trying to give some constructive feedback for you to improve on haha. I used to stargaze quite a bit before, but atm I'm so friggin busy with school haha. Never got into astrophotography though (the things I wrote above is just what I've heard from a person I know who is pretty good at it). Just finding objects yourself and seeing them through the telescope yourself is in and of itself and amazing enough experience for me.
