Astrophysics, simple parallax error

AI Thread Summary
The discussion focuses on calculating parallax errors in astrophysics, specifically how to determine the impact of 1% and 50% errors on parallax measurements. The formula d = 1/p is referenced for calculating distance based on parallax. The user expresses confusion about incorporating error percentages into their calculations, particularly after attempting to use a ground-based measurement of 30. The lack of solutions in the referenced textbook adds to the frustration. Clarifying how to adjust calculations for varying error percentages is essential for accurate results in parallax measurements.
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Homework Statement



Experiment 15.2 (note this is from a book about 5 years old, and the book has no solutions!). I am simply unsure how to calculate between parallax with 1% error and parallax with 50% error etc. Please see the scan I done of the page: http://img210.imageshack.us/my.php?image=savevx9.jpghttp://img210.imageshack.us/my.php?image=savevx9.jpg

Homework Equations



d = 1/p

The Attempt at a Solution



I've tried p=1/d = 1/30 (for ground based) although how do I then account for '50%' error etc? With this book not having solutions (or even answers!) I am just getting further confused as I know these should be very simple calculations.
 
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