Choose between the following options:
C8/Old C9.25: For Celestron 8″ SCT or Pre-2014 (approximately) Celestron 9.25″ SCT,this adapter is designed for Celestron’s 8″ SCT. It also works on Celestron 9.25″ SCT’s that are pre-2014 (approximately). Recent 9.25″ telescopes changed to the larger thread on the rear cell. If your 9.25” has the large 3.29” thread on the rear cell, use the adapter below:
C9.25/C11/C14: For current Celestron 9.25″ SCT, Celestron C11 SCT, Celestron C14 SCT