Despina transit of Neptune

On 24 August 1989, beginning at 20:00:45, the Voyager 2 probe captured a sequence of four images showing a transit of Neptune by its moon, Despina. They are taken sequentially over a period of about 27 minutes though different filters. The transit was not noticed at the time of the flyby. It was identified by Ted Stryk in 2009, 20 years after the images were taken.[1]

Original images

• 
  Frame C1138023
  20:00:45
  Blue filter
• 
  Frame C1138034
  20:09:33
  Orange filter
• 
  Frame C1138045
  20:18:21
  Violet filter
• 
  Frame C1138056
  20:27:09
  Green filter

External links

• Astronomy Picture of the Day featuring Ted Stryk's processed image of the transit
• An article about the discovery of the transit images archive copy at the Wayback Machine