Hi, Thank you for your excellent tutorial. I used it religiously to set up both my cameras. It works fine for my 1000d Canon and plate solving works a treat. But for my Starshoot G3, it is unable to solve. My original post is here http://stargazerslounge.com/topic/248541-unable-to-plate-solve-using-astrotortilla/ I have tried different settings to no avail. This leads me to wonder if I have the required index files. My scope is a 200p skywatcher (f5) 1000mm FL and the FOV of my CCD camera is 21.97' x 17.01' What index files would I need? I can then check the data folder to see if they are there. Plate solving is more important for the G3 mainly due to the small FOV, making it difficult to find and center an object. Astrometry.net, however, solves the images virtually straight away. Any help would be appreciated. Surinder