6 arc seconds - oh my God, I would freak out if my PE were that bad! hehehe.
I think mine with PEC running from the previous owner (which I erased to replace it) was more like 1 arc second.
Still, you need that U-beaut polar alignment.
I would als recommend using drift alignment to get real close rather than T-Point.
T-point has often recommended polar alignment changes that made autoguiding worse, sometimes better, often worse. That is with only about 8-10 mappings.
So I'd go quite a few mappings before I would implement its suggestions and stick with drift alignment to get it really close.
One important aspect of super accurate guiding is your images will be sharper as there is less shear/blur in the image from guide errors.
With your super sharp TOA150 although your guiding with the EM400 is superb, the PME is capable of considerably better and that has to mean sharper images and less reliance on your AOL.
Greg.
Quote:
Originally Posted by marc4darkskies
I'll try TheSky training first and see what it does. IMO, for high end mounts, PEC isn't that critical anyway. (Never had it for my EM-400 and look at the results I get). Of course, it may be more important at longer FLs but I'm still imaging at or below 1760mm and my EM-400 has never had any trouble guiding out the smooth 6 arcsec P to P PE I get.
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