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Hi Greg,
I use one of the powerline POE adapters mentioned above and I use RealVNC to control my observatory either from my office PC, Tablet or Samsung phone. I get 100Mbs transfer rate which is more than adequate. I use SGpro running on my Obs PC to control the gear. I also have an IR security camera in the obs so I can physically see where my mount is pointing or moving if I happen to be awake and wish to do so. All this runs concurrently with no time lapse that I have noticed. Real VNC transmits the screen data when you first log on, and then only transmits the screen data for any pixels that change . This way the bandwidth required is kept to a minimum. Yep in the mornings when I transfer the images from Obs pc to Office PC it can take a bit longer than full network speeds, but normally less than 10 minutes, and the transfer size of an entire nights images is somewhat dependent but usually between 4 and 5 Gb at most.
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