Check the listing for details. Split Dust Cap for Celestron C14 W/ Hyperstar connects on telescope like cap. Condition: New. Listed at 39.99 USD. Very big cap! Over 15 inches1outer diameter. Celestron C14 W/ Hyperstar Dust Cap, Now upgraded and thicker mask to have more strength. Would also work with regular C14 with no Hyperstar. Celestron C14 , this version is meant foC14 with Hyperstar . It connects on end of telescope and comes in a split design to put on and off very easily. measurementsbeforepurchasing for your telescope. . This is meant for Celestron c14or with Starzona Hyperstar . , if buying for regular version it will have some space in middle diameter hole of cap. Special design to split apart. More options will be available for the C14 hopefully soon. C14 bahtinov masks soon also available just ask. Condition is New. Shipped with USPS First Class. Software Designed and tested. Works great with these and similar models. 3d printed and designed by Spencer 3d. As always fast free USPS SHIPPING. 2 TO 3 DAY SHIPPING. BLACK . Other colors and types available just ask. If need a particular size message me,or if have questions.