As I can't find the original post on Coudynights, I copied it to word and this is it:
Set up your scope roughly for NCP and level just like always.
Turn on the ASIair Pro and connect it to your tablet or phone. I connect the ASIair with a usb cable into the CGX hand controller, but at this point I have the usb cable unplugged as it is not needed until later.
Turn on the CGX and hit ENTER twice to get scope into home position, if yours doesn't goto HOME position automatically then do what is necessary to get it there.
Turn off the mount and head to the ASIair app and start the PA (polar alignment) procedure
4.Since the mount is off and unplugged from the usb the app will warn you that the mount is not connected, just press skip and continue.
Take your first pic for the polar alignment in the HOME position. After it plate solves that pic it asks you to rotate the RA 60 degrees left. I just loosen the RA clutch and roughly tilt it to 60 degrees. This angle doesn't seem to need to be exact.
Take your second pic for the PA from the 60 degree angle and continue with the polar alignment procedure until your satisfied.
Once I'm finished with the PA I return to the PREVIEW page of the app. Turn the mount back on, but don't connect the usb cable to the hand controller just yet. Go through the time date and GPS settings as usual until you get to align. ***Remember to enter the DST information correctly. WINTER SEASON IS STANDARD TIME, NOT DST which starts in the spring and ends in the fall. This may be why some people are getting the time off by 1 hour.
Now from here there are 2 options. If your mount is virgin I would do a 1 star alignment, otherwise if you have previously aligned just choose the USE LAST ALIGNMENT option and hit ENTER to see the CGX ready text. If you need to do an alighnment and you are using a ASI camera, then you will need to use the app to take pics and get the alignment down by using the PREVIEW page and turning on the crosshair to make centering easier. This can be a pain if your field of view is narrow. I use the guide camera scope and guide section of the app to get close or whatever method you find is best. This is why it's nice to have an alignment done once then use the LAST ALIGNMENT option for future setups. At this point I still don't have the hand controller connected to the ASIair pro until I get to the CGX ready text.
Once you have the CGX ready text on the hand controller, connect the usb cable to it and the ASIair Pro. In the ASIair app, push the mount button at the top and turn on the mount connection. If everything connected and you've chosen the right mount in the dropdown you should be good to go to the next step.
From the PREVIEW page of the app, take a 3-5 sec shot then hit the PLATE SOLVE button. On the page that opens there is a sync mount button and push that. The ASIair now has control of the telescope and is ready to GOTO objects using the search box from the PREVIEW page of the app.
Pick another object to goto then I do another plate solve/sync to reaffirm the link to the mount. When you do a search for an object in the app you can tell it to SYNC and GOTO in the same step.
From my somewhat limited experience so far, aligning the mount with the hand controller is unnecessary if you use the plate solve and sync of the app and you have previously aligned the mount. Once you do an alignment one time you can just use LAST ALIGNMENT for subsequent sessions. It's the app that is telling the mount where to go and the hand controller is just a go between. Also, before I started using the goto and sync options in the app, I was getting object drift slightly while imaging after aligning only with the hand controller and using the goto only of the app, which I couldn't understand since I was autoguiding with the 120 mini. Once I started using the plate solve and sync options, which I believe gives control of the scope to the app, I had zero discernible drift. It seems that not syncing the mount to the app makes the app and the CGX hand contoller fight each other. Again, if you have a virgin mount you will need to do a one star alignment so that the hand controller has some data in it and you can bypass the alignment the next time you set up. I believe that once you do a one star alignment with the hand controller you won't need to do one again even if you do move sights since the app is plate solving to find where it is, which is far more important.
Hopefully this will help those with a Celestron mount. I saw the ZWO facebook page and their setup suggestions are similar to mine, except they don't mention the plate solve and sync options which I think are critical to good guiding results. I will update this post if I run into some problems or have someone else point out an error.
