On-Axis guider vs. Off-Axis guider

Posted by SCO on Nov 03, 2021; 5:28am
URL: http://astroimagej.170.s1.nabble.com/On-Axis-guider-vs-Off-Axis-guider-tp1646.html

I have heard that an on-axis guider is better for exoplanet work than an off-axis guider.  The reason given for this that with an on-axis guider the guide star is closer to the target and comparison stars, and therefore the effects of any polar misalignment are reduced as compared to the off-axis guiding approach.  I am interested in opinions from this community about this argument.  What do current exoplanet experts use today?  What would this community recommend (off-axis or on-axis)?  Does anyone think that it makes a difference?  Thanks.