Just to put a little color to the performance increase: Last night was another breezy night. Checking the Prescott airport METAR (automated weather reporting):
10:53 pm 6 knots (1 knot is about 1.15 mph)
11:53 pm 12 knots gusting 19
12:53 am 11 knots
1:53 am 5 knots
2:53 am 3 knots
3:53 am 6 knots
I shot from 10:34 pm until morning twilight at 3:57 am and phdlog showed many(!) excursions over 2 arc seconds. I had one 25 minute block of exposures where my rotator timed out, so those numbers were discarded.
Overall rms numbers for the evening: RA = .34, DEC = .51, Total = .61.
Overall numbers for the last two pre-mod sessions: RA = .45, DEC = .65, Total = .78. And those were relatively calm wind evenings.
The only subs I discarded were four during the windiest hour, and one were the rotator timed out. A few high clouds did go thru during the evening (so says the METAR), so a few more may get culled - but not for guiding issues.
This is getting fun again.
