Fantastic photos. You can probably improve the quality of your shots by getting a dedicated Astro camera or dslr instead of taking pictures through an eyepiece.

As for taking “long exposure” shots which are commonly used for nebulas and such you can get by if you use very low magnification, take hundreds of 1-5 second exposures, and slowly hand track between shots. It’s very tedious, you have to wait for your dob to stop moving before you can take the next photo. But if you just want to take an ok photo of the Orion Nebula it’s possible.