Check the listing for details. Celestron C11 W/ Hyperstar Dust Cap, Split, connects on telescope. Condition: New. Listed at 27.99 USD. Celestron C11 W/ Hyperstar Dust Cap, Now upgraded and thicker mask to have more strength. Would also work with regular C11 with no Hyperstar. Celestron C11 or HD 11 Inch , this version is meant foC11 with Hyperstar . It connects on end of telescope and comes in a split design to put on and off very easily. measurements before purchasing for your telescope. . This is meant for Celestron c11 or edge HD 11 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 C11 hopefully soon. C11 bahtinov masks 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 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. SHIPPING CHARGES ARE SLOWLY CHANGING! MOST ITEMS THAT WAS FREE SHIP WILL BE CHANGING OVER TO CHARGED SHIPPING TO THE BUYER, DUE TO INCREASE CHAEGES OF SHIPPING AND SHIPPING SUPPLIES. BUT THIS WILL ALSO MEAN LOWER PRICES ON THE ITEMS, AND MORE SHIPPING OPTIONS, AS WELL AS FASTER SHIPPING OPTIONS. THIS ALSO MEANS MORE ITEMS AVAILABLE FOR INTERNATIONAL SELLS.