I have been having a series of occasional plate solving failures using the local Astrometry.net. Sometimes it works, other times not. I haven’t fully characterized the problem, but it may have to do with binning. When getting ready to take a pic, I will first do a series of frame and focus images. I usually finish this at 1x1 binning. When I do a final Center Here, It sometimes fails to solve the reference image. I have the scope frame and center on the Control Panel set to 2x2 binning. Last night, I found that it would work well if I also took the reference image at 2x2 binning.
It was these failures that would take 2-4 minutes each to fail that make me anxious for the much faster PlateSolver2 interface.
Windows7, SBIG STT-8300M, TheSky6 Pro, Orion Atlas Pro AZ/EQ-g mount.