A:AnswerYou can still attach a small digital camera with an HDMI output to the telescope, and have it connected to a TV for live viewing. A Celestron NexImage astroimaging cameras can also be connected to the telescope for planetary/lunar imaging or for live streaming on a laptop.
A:AnswerAlthough Celestron does not offer a carrying a specific case for the NexStar 90SLT, you may be able to find a case from third party case manufacturer. Sincerely, Garrett at Celestron