An antique brass telescope kept by Captain Philippa Georgiou in her ready room aboard the USS Shenzhou and left in her will to Michael Burnham.
The telescope is a family heirloom, handed down through generations of Georgious, and stands in the captain's ready room in the opening episodes of Star Trek: Discovery. Georgiou, Burnham and Saru use it to look out at the unknown object near the binary stars.
After Georgiou's death and Burnham's conviction for mutiny, the instrument reaches Discovery. In The Butcher's Knife Cares Not for the Lamb's Cry, Burnham receives her captain's recorded last testament, in which Georgiou leaves her the telescope with words of affection and confidence that Burnham finds hard to bear.
At the end of Choose Your Pain she passes it to Saru, judging that he has the better claim to it.