You see, there are two types of people going to concert nowadays: the first group goes there to listen to the music, enjoying the atmosphere, have a good time. The second group goes there to film everything with their phone, take selfies, post to social media while there.

The OP is of the former type: before you go there and photograph, first take time and enjoy the simple, dark sky.

There is nothing wrong with buying a telescope with an equatorial mount instead of a dobson. But buying a dobson (and thus not having the possibility of deep sky photography) might still be a valid endeavour to really connect you mind to your new hobby. And a dobson can be had so cheap it is a no-brainer.

I for one would recommend going with an equatorial mounted Newton telescope with 6"+ . Then you have a lot to see and learn. And one day, when you are ready, take it to go for the photos. There were those great russian Sirius-Telescopes in the 90", equipped even with a motor. Do they still exist?