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Originally Posted by Matty P
Hi Duncan,
I had similar problems using RDP from my laptop to the desktop in the observatory. Everything would be working flawlessly. I would have TheSky6 with EQMOD, PHD and Canon software all running and as soon as I would connect remotely. EQMOD and the bluetooth connection to the mount would disconnect instantly. I couldn't really find a fix for this so I ended up installing UltraVNC.
Using UltraVNC, I can now successfully connect and control everything inside the obs. Doesn't slow down any of the processes and is very reliable. I'm going from Vista to XP as well.
Hope this can help. 
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Hi Matty
Using RDP, some of your functions would have dropped out as its like logging off, and signing in as a new user, RDP from Vista to XP is a nightmare, specially with XP SP3 as it introduces another security layer to overcome, leaving wierd side effects such as the password working on the client, then connecting, then the password not working again when reconnecting! its because RDP looks for a fully qualified domain, or NetBios name, and has trouble without it, there are certain fixes, like a registry key to disable authentication, or editing the DEFAULT.RDP file to never ask for authentication and connect anyway, but these methods are cumbersome, and not without security holes, Windows XP uses an IPv4 standard IP address for XP, and Vista uses the newer IPv6 standard, which again is only there to mess people around.
I use VNCUltra 4.5, and it works great, but the problem is Stellarium, even when the two laptops are 18 inches apart, and 3 feet away from the router (we had an argument in work today, i say "rooter" and people in work say "row-ter" and then i tell them the most famous "rowt" in the world is "route 66" that usually end the discussion) , anyway, turns out Stellarium is a real resource hog, and when it runs on my main laptop (17" with a Penryn Quad CPU at 2.66 and 4GB DDR II) it still consumes vast amounts of CPU cycles, while i love it, i get the impression it could be coded alot better. When i use anything else, and i have tried The Sky 6, Red Shift and Starry Night, it runs as sweet as a nut, even with PHD and the Canon software suite to, which is a shame, as i am very familiar with Stellarium, but it appears i will need to use something else, i ahve heard good things about Cartes Du Ceil so i will give that a bash, the only thing is that i am not familiar with the software, so thats another thing to learn! if anyone can recommend a good planitarium package that works well with EQDIR, then chime in!!
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Originally Posted by pmrid
DUncan, are you using VNC across the internet or across a LAN? My Observatory is a bit too far from the house for a normal wireless connection to make it. So I'm looking a setting up a local ad-hoc and interface through a couple of VHF TV antennae. That is if VNC can work across such a setup.
Peter
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Hi Peter, using it across a LAN, with nothing else running on it, regarding your issue, why dont you just setup a remote wireless point, or do as i did, and get a 9db gain wirless antenna? my range has went from being my house, to the adjacent blocks, and over to the next few suburbs! alternatively, get a pringles tube, a coathanger etc, and you should be able to build something on the cheap