I had adjusted my PHD2 settings this early summer to get a total rms of about .8. I know folks have gotten better, but this was plenty good enough for my 532mm focal length. As temperatures have dropped (36F, 2.22C), guiding has gotten worse with no changes to settings or equipment (AM5N). My rms is now - 1.6. Are there changes that must be made with the colder temperatures?
