OK... After a little over 1 yr of using an EQ-G, I have finally joined the "guiding" bandwagon; thus, proceeded to evaluate the pe. Following analysis were done with a C8 + finder scope + 6.3fr + Phillips webcam + PDH module (the webcam was installed on the C8 for ease of the exercise.
The below screen shot is for the unguided run. Basis my scant experience with guiding, looks like the pk-pk pe is 6 arcsec for a little over 1 complete worm cycle, and it also looks like there are lots of higher frequency events going on, as evidenced by the rippled raw data dnd the FFT survey.
Unguided images (less than 2min typ) at 1200fl show fairly round stars, yet my guided images (3min typ) show some irregular star distortion (but no tails). Thus, the aim of this exercise was to find if the source of star distortion is the mount pe or the guiding set-up. So far, I have used the default PDH set-up, except for agressivness (80%).
Any comments are appreciated.