I have a very small horizon due to living on a wooded lot. I basically have no north or west horizons and I have from about 25-30 degrees above ground from NE to just past the meridian to the west.

In the Horizon editor window in ACP preferences under I believe the Observatory tab, I basically have a U-shaped line that goes from NE to SW about 30 degrees to zenith. I keep getting the error "points are 10 degrees from their neighbor" or something like that.

Is that correctable? I tried to get the Horizon Editor program but that link is dead. I guess you can edit your horizon in The Sky and upload it?

I guess my question is how do I correct this error message or should I just ignore it? My main concern is telling ACP my true horizon so it's not pointing in the trees.

Thanks for the help,