Now,I find new way to make it more faster.If we know RA and DEC ,we can tell solve-field to only look there.
I tried it yesterday,and solve an image only need 5 seconds.Wow,amazing!
I think the most difficult part is to know the object's RA and DEC,I use Skychart to get RA&DEC,this is really fast.you can try it.And the newest AstroAir-Web-Tools is on Github now.You can visit https://github.com/AstroAir/AstroAir-Web-Tools to get more information...