My apologies for posting this here, since there can be no doubt it belongs some other place. I *know* I am mistaken in concluding info is unavailable, but I have searched on Cloudy Nights and the internet at large over an extended period for any help on this issue with no luck.
I have a 9.25" Nexstar Evolution. Great scope! My problem is with alignment. Say I want to add a Precise GoTo, which I understand improves the alignment. Which I need because Sky Align loses accuracy over several hours. Last night I *really* wanted to use Spica as I hadn't used an object in that part of the sky earlier. But it was not under Named Stars from the Database. Deneb was also missing from the database last night. This has happened before with Procyon (which was there last night, only useless to me, being about 10 degrees above West and behind a building) and Vega (at zenith, besides, I'd already used it.) And others, but I can't recall at this moment which stars.
Why is the database so weird and random? Why sometimes when I select a star, there appear to be maybe 75-100 to flip through, while at other times there are obviously closer to 200? Shouldn't the top 50 or 100 *brightest* stars be there for alignment purposes at the beginning of an evening, when only a few stars are visible? And why can't we have the Bayer designations if Celestron won't give us the common names? I don't *know* the HD and Flamsteed numbers for most stars; that is one reason for getting a computerised mount.
And then there's the Named Deep Sky objects . . . but never mind, I don't mind star-hopping and consulting DSN catalogues if only I could get the scope aligned and tracking!
As I said, I am certain others have had the same trouble over the years, but I just can't unearth any discussion of such issues, even peripherally.