Hubble's Staircase Effect: What Caused It and How Was It Fixed?

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The Hubble "Staircase" effect in older images is due to the use of separate cameras for each quadrant, leading to noticeable differences in image quality and alignment. This issue was prevalent in images taken with the Wide Field and Planetary Camera 2 (WFPC2). The problem was resolved with the introduction of the Wide Field Camera 3 (WFPC3) in 2009, which improved image consistency and quality. The upgrade eliminated the staircase effect, resulting in more uniform and higher-quality images. The transition to WFPC3 marked a significant enhancement in Hubble's imaging capabilities.
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Hubble "Staircase" effect?

Hi, I was just wondering why some of the older Hubble pictures have a staircase effect on them? Any help would be appreciated! Example below

edit: refer to examples in post #3
 
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OHHH so each quadrant is taken with a separate camera? Why is it no longer like this?

592px-Bok_globules_in_IC2944.jpg


600px-STSci-PRC01-33_omega_centauri.jpg
 


Because they changed the http://en.wikipedia.org/wiki/Wide_Field_and_Planetary_Camera_2" for the WFPC3 in 2009.
 
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