Hello, My Seestar S50 has developed a black spot on my captured images. I just bought the telescope last month, October 2025. I also turned-on the anti dew for couple of hours, but no improvement at all. I have attached here some of the images. What should I do?
Anthony Catalan
Tony859 Dust on the sensor. Try to take flats.
Tony859 This should be a hidden factory error, happened to me too with my first S50 when I had it for one and a half month only. I suppose that a particle of a moving part has escaped and fell on the sensor or other optical element inside. It cannot be dust, because the optical part is fully isolated from the outside, so there is no way dust can enter. I would request replacement or repair in warranty.
Lilo How do i take flats?
Tony859 Read tutorial
Tony859 https://h5.seestar.com/course/186034
