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7.3 Stars

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Question 7

An amateur astronomer attempts to photograph the Triangulum Galaxy (M33M33M33) from a suburban backyard using a digital camera attached to a refracting telescope on a static photographic tripod.

The resulting raw image suffers from two major defects:

  1. The stars appear as short, parallel streaks (star-trailing) rather than sharp points of light.
  2. The faint outer spiral arms of the galaxy are completely washed out by the bright, grey-orange background skyglow.

State two distinct changes the astronomer could make to their equipment or observational technique to resolve these issues and improve the image quality.

[2]
Markscheme

7.3 Stars Questions

  1. GCSE
  2. /Physics
  3. /7.3 Stars

42 exam-style questions on Edexcel GCSE Physics 7.3 Stars. Each one has a worked solution and a mark scheme showing where the marks go.

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