My C11 optimo fork mount seems to have what i think is excessive backlash in the mount .
Never really noticed it until last night while looking at Mars... I have never had this apart , and until last night never noticed it . The movement is very noticeable , as the fork will move 3/16 in on axis .. I dont do AP , only visual . It tracks rather well for a wedge mount with little or no adjustment .. is there a way to take this out ?
Its pier mounted .
Next question , how often should collimate be done? I usually do once a season (4x/ yr) , as its inside a domed observatory. Just wondering what the general consensus is on this.