Size for the Nexdome is manageable for my 12.5 scope (barely) - its the shutter that is the real weak point of the Nexdome automation setup, There is too much friction with the shutter going up and down. All owners have to use a combination of teflon tape and wax paste to keep the friction low enough that it will open without stalling. But this "maintenance" is required often - maybe every few weeks. As well, the shutter sometimes just stops 1/2 way up or down due to controller issues(?), with no way to fix that without physically going to the observatory and resetting the Arduino. As well, the dome automation track will sometimes skip a tooth or two which throws the calibration askew. Needless to say, not an ideal situation if you want reliable remote observing. The Pulsar sounds very solid in those respects.