PEMpro now supports the MEII (Thanks Ray!). And yesterday proved to be a night of very steady seeing. The results are pretty amazing! As I was collecting data I was convinced that somehow I hadn't turned PEC off.
Uncorrected PE = .8 arc-sec measuring 5 cycles of the worm
Corrected PE = .4 arc-sec
All my previous measurements with both TSX and PEMpro showed 1.5 arc-sec peak to peak so this must be a lesson that poor seeing will not allow the algorithm to work entirely correctly in determining PEC. Following this line of reasoning perhaps TSX simply doesn't do as good a job knocking out bad data as does PEMpro. On nights of poorer seeing PEMpro was able to produce a PEC that worked (1.5 PTP to .7 PTP) whereas TSX measured PTP as 1.5 but would not generate a curve that gave any correction, but put in "upside down" would double error (1.5 to 3). It's either that or some sort of phase error. If I'm bored I may experiment with this further but clearly it will take an exceptional night.
Yesterday I also received an OPtec "Libra" alt-az mount that I have installed in the saddle holding the TEC140. I now have perfectly aligned pointing of both scopes. It appears to be an exceptionally well made product! Now, I still only am waiting on the focusing solution from Starizona. They say soon but I've heard that toooooo many times!
http://www.pbase.com/prejto/image/155505015
Peter