Thanks, I’d found it on Peter’s site. It all looks fine to me and the Celestron name isn’t coming from that so it looks as if it must be left over in SGP somehow.
I tried it with Conform.
It seems to run remarkably well, even with no hardware. It did take some time to sort itself out at the driver creation and connect phase, something like 15 to 20 seconds. The SGP log seems to talk about timeouts there and if it takes some time to connect, even with hardware, maybe SGP isn’t waiting long enough.
One thing to try is to connect through POTH rather than directly, The driver is single threaded and using POTH may help to keep SGP’s multi threading happy.
I can understand Peter’s point. Writing drivers can be a pretty thankless task, especially with no support from the manufacturer.