SpaceX satellite streaks cross nearly a fifth of telescope's twilight shots - CNET
The streak from a Starlink satellite appears in this image of the Andromeda galaxy, taken by the Zwicky Transient Facility, or ZTF, during twilight on May 19, 2021. ."We don't expect Starlink satellites to affect non-twilight images, but if the satellite constellation of other companies goes into higher orbits, this could cause problems for non-twilight observations," Mróz said.We found that twilight observations are particularly affected: a fraction of streaked images has increased from less than 0.5% in late 2019 to 18% in August 2021.Once SpaceX deploys 10,000 Starlinks, essentially all ZTF images taken during twilight may be affected.