My first try started by installing raspian buster and then following the command line instructions listed under advanced installations.
I think I mis-typed the second command "sudo su -c "echo 'deb www.astroberry.io/repo/ buster main' > /etc/apt/sources.list.d/astroberry.list""
the second try I was able to get connected but kstars would nt run, running it in a terminal produced a couple errors something about missing one or more databases.
I decided to try the "easier" approach of unzipping the unzip astroberry-server_2.0.1.img.zip file and writing that with etcher. That too failed, but in looking at the boot errors , I was recalled that Etcher has some settings which might impact the installation and which arent mentioned in the instructions.
I checked the "trim ext(2,3,4 ) partitions" check box and that installation seems to work.

I am able to connect to astroberry server, run kStars, I can connect and control my Atlas Orion, and my Canon T3i. Everything runs (somewhat slowly, despite over clocking the RPI4) so now to get some experience with the system.
thanks for your help, and I hope that comments might helps others wit their install.