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C.A. in astrophotography

Silent Shrill · 2021-10-21 11:59:52

I would like to know why when photographing the night sky we get C.A.? I understand the answers about lens curve, but if I look at a night photo of a city there is no C.A. So why does the night sky produce it but not night photos of cities?

21-10-2021 11:59am

#1

Silent Shrill

Registered Users, Registered Users 2 Posts: 159 ✭✭

Join Date: September 2010

Posts: 128

I would like to know why when photographing the night sky we get C.A.? I understand the answers about lens curve, but if I look at a night photo of a city there is no C.A. So why does the night sky produce it but not night photos of cities?

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