I noticed tonight - after my imaging run - that a new release of PDH verison 1.5 is available from
www.stark-labs.com
http://www.stark-labs.com/downloads_...PHDGuiding.zip
It was relased 17 April actually - I only check for s/w upgrades every 2 months or so. The main idea behind this release seems to be imrpovements in algorithms to prevent over compensation in DEC corrections.