Bryan Cashion

John Where are you entering the focal length? The Astrotortilla GUI does not require it. You can enter Scale Min and Scale max to cover the entire range of FOVs that you might encounter. It would add a few seconds to solution, but noting drastic. A solved image will display actual field of view dimensions. From that you can calculate f.L. if you know your camera sensor pixel size and pixel dimensions. Bryan

John I solved your image (see attached screenshot) in 90 s. I set Scale Min at 0 and Scale Max at 180 (degwidth) Note that the solved FOV is slightly offset from yours. I suggest trying to solve with ScaleMin at 0.2 and Scale Max at 2 and see what happens Bryan

Peter Did you use the Tutorial to install? Attached are the settings that I just used to solve M86 in 26s on an HP 1.86 GHz, 8 GB RAM laptop. I started the Scale Low / High at 1 and 2 (degwidth) As Kevin notes, once AT solves an image, it will reset the Min/Max to bracket the image more closely. Of course, this means you have to reset the Min/Max when you change equipment. Also, note that I use astrometry.net 0.8. This removes the FAST_CWD error (at least for me). See https://sourceforge.net/p/astrotortilla/discussion/general/thread/1be21dff/...

Peter Have you tried running the image of M86 provided in the Install Tutorial? https://sourceforge.net/p/astrotortilla/discussion/general/thread/1d35f7ae/ Bryan

https://sourceforge.net/p/astrotortilla/home/Configuration/

Dave I forgot to mention that I use AT with BYEOS now. It works great and makes centering any object very easy. I use both along with Cartes du CIel. Bryan

Dave Glad to help. Looks like now I should start restricting my indices! Bryan

Dave I do not think the error is critical. However, unless your PC is VERY old, 2.5 minutes is quite long. My soultions take 20-40 seconds. I do not restrict the index files. Here are my setttings. Scale refine 0.1 Search radius 45 --downsample 2 --overwrite --noplots