Anyone have some quick tips for using PHD 2 guiding ? I use a C 8 on a CG 5 ASGT and my guide package is a celestron 80 mm refractor with a ZWO ASI 120 MC . Even with this relatively inefficient setup I am getting good results , with midrange latitudes Orion area now doubling my previous exposure limits I do 2 complete 2 star alignments with 4 calibrations stars each , followed by a polar alignment on a southern star before I center the guidescope and begin guidance . So it ' s not as though I plan on guiding to do all the work . I ' ve already seen improvements from letting PhD build a darks library for my guidecam . I ' ve figured out that adjusting camera exposure time and gain allows easier viewing of stars . Does PhD have any dithering settings ? What I was doing last night would be setting the camera to take pictures , go inside for 30 minutes until I could feel my hands again , then go back out and use the lock adjustment to move the guide star 10 px in varying diagonal directions , rinse and repeat . Any way to automate this process ? Most of unknowns now center around the min adjustment settings , all the numbers seen in the correction graphs . I think these change how sensitive PhD is to star movements . How do I hone in on the right settings for this ? Similarly , what can I do to reduce the range of error ? The movements can be plotted into a targeting reticule scattergraph , and while sometimes most of the adjustments are tiny and near the center , sometimes the points range very far from the center of the target . What can I typically do to help this out ? I ' ve done some tests the past few nights , and last night I was getting 2 . 5 minute exposures on the Orion Nebula when previously I would only be able to get 75 or so seconds reliably that far away from the pole . I suspect that my performance a little closer to the poles will be better , and I may try M 81 M 82 tonight or tomorrow .