Looking for a used, but good to excellent condition Celestron C5 - Optical Tube Assembly only. Does not matter if OTA is from a Nexstar, Spotting Scope, or C5-S system. Prefer newer model (i.e. C5-S, Nexstar, or white tube spotter) but will consider an older (i.e. orange tube) for the right price. Can pay via Paypal, check or money order.