I just talked with Celestron again and he indicates that the Nexstar+ should work with my telescope because I currently have version 4.5 motor control software. Is this a better option than a version 4.
He also informed me, that any programable controller with the "UNDO" button should work also with the correct software downloaded.
Any commits. This all seems very confusing to me.
As 12Bass has mentioned there has been quite a bit of confusion and miss information about the use of the v5 (NexStar+) hand controllers on the NexStar GPS scopes. Mike Swanson has waded through much of this and provides some really good info. The problems have often been related to the interaction between the hand controller firmware and the motor controller firmware (the two motor controllers are on a board inside the scope/mount).
Celestron's support has maintained that if the motor controllers on the GPS scopes are running MC firmware 4.5 or greater then the v5 NexStar+ hand controller will work. I think we've seen a few cases where this wasn't true, but in general it was a reasonable guideline. But this is also why Mike and others strongly suggest using the v4 NexStar (the one with the UNDO button), as it works with all older NS GPS scopes regardless of the different motor controller firmware.
So if someone with a GPS scope needs a new hand controller it has been safer to simply suggest using an older V4 hand controller and updating the firmware to the NXS4.22 level ... particularly since there is still a supply of hardly used V4 models from inexpensive Celestron scopes. Some GPS owners can also take advantage of the new V5 hand controllers and if so that's great as they can use a new factory fresh hand controller.
Edited by mclewis1, 06 September 2019 - 03:00 PM.