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BAA Images Nik Szymanek

Observation by Nik Szymanek: Earth Rainbow

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Nik Szymanek

Observer

Nik Szymanek

Observed

2020 May 30 - 09:53

Uploaded

2020 May 31 - 09:58

Objects

The Earth

Equipment
  • Canon 5D MkII
  • Canon 28-135 lens
Location

Boxted, Essex.

Target name

Earth Rainbow

Title

Earth Rainbow

About this image

The image above features what I call an Earth Rainbow, an ‘artificial’ rainbow created during the Spring season when local farmers are irrigating onion fields. Patience is required as the viewing geometry has to be correct. On this afternoon the spraying nozzle was in an accessible part of the field and the Sun at a suitable altitude to create a reasonably high bow in the spray. The nozzle sweeps from side to side and a gravity-operated ‘chopping’ blade breaks up the water flow to help spread the water across the field. This means that the visible rainbow changes on a continuous basis especially as wind gusts also break up the flow. Occasionally, the water droplets become quite large, creating a vibrant, colourful arc.

Photo Details: Canon 5D MkII DSLR and 28-135mm lens at 95mm and f/7.1. Exposure time: 1/1000 sec at ISO 400. Image taken at 17.26 on 05/30/20.

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