AO to OAG Autoguider Extension Tube

The threads are machined so precisely that my AO unit screws on without any wobble at all. This little adapter completely eliminated the flexure I was struggling with in my guiding setup.

The threads are machined perfectly smooth, so screwing it onto the AO unit was effortless. It eliminated all the play I was seeing with my previous adapter. My guiding graph is noticeably flatter now.

Finally got my autoguider setup dialed in without any wobble—this tube’s threading is precise enough that the connection feels rock solid even with a heavy camera hanging off it. Saved me a whole night of frustration with misaligned spacers.