Secure Fit CCD Spacer

Finally got my imaging train rigid enough that focus holds steady across a whole session, and the four-screw lockup onto the Hedrick focuser makes a huge difference versus the old threaded adapter. Slight hassle to wrench in with tight clearances, but once it’s seated, there’s zero play and my stars

The four-screw attachment to the Hedrick focuser is rock solid—no more guessing if my image train is square. Finally, a spacer that holds the camera perfectly flat at the image plane.

Finally a spacer that doesn't wobble when I'm dialing in focus—the four-screw attachment to the focuser feels rock solid. It took me less than five minutes to get everything aligned and snug.