Quote:
Originally Posted by g__day
Is it over shooting on RA - causing an oscillation?
Turn backlash to 0 on RA and DEC - definitely let PHD manage this.
Try and adjust pulse length so it takes 15 - 30 pulses to move the star sufficiently to calibrate.
I set RA aggressiveness to about 85% and Hysteresis to about 10%. Purists suggest more aggressiveness (95% - 100%) and less hysteresis (5% - 0%) when calibrating and about my levels when guiding.
Experiment with minimum pixel movement before guide pulse is issued from 0.2 up in 0.1 increments to see where your sweet spot is (seeing based). Definitely use the PHD chart function and look at the Osc(illation) index - you want that as small as can be.
|
I have set my backlash to zero;aggressiveness-I cant get it to guide unless I go to 110%. My hysteresis is at 10 %-maybe I can experiment with 5%
minimum pixel movement is at default -0.15 from memory-but gee, it does a fine job in Dec..will experiment with this setting too, its one I haven't tinkered with.
gotta ask what's the OSC-I dont seem to have it in my version of PHD?