Many Images of the Chromosphere Are Taken Through a Filter

question 173

Multiple Choice

Many images of the chromosphere are taken through a filter that allows only specific wavelengths to pass. One reason for this is

• A) to block out all other wavelengths of light and allow through the prominent light of these wavelengths produced in the chromosphere.
• B) to allow through the filter the background light at these specific wavelengths produced by the photosphere and thus show an effective contrast with the chromosphere.
• C) to ensure that Earth's atmosphere does not interfere with the image.
• D) to block out light from the corona.

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