3 Collimating knobs for Celestron 11" SCT with Trifid secondary (not Edge HD)

Availability: In stock

These no-tool collimation knobs fit late model aluminum optical tube and most carbon fiber optical tube versions of the Celestron C11 Schmidt-Cassegrain (those with a partially raised "Trifid" housing that rotates to cover and uncover the collimation screws) . . .