Star trails - Photography

[Kewell]

When&nbsp;we take pictures of the sky with long exposure times. Why do the stars leave trails that go in a circle. Why dont they leave trails streaking across the sky instead of a circle? <div class="Discussion_UserSignature"> </div>

 

[MeteorWayne]

Replying to:<BR/><DIV CLASS='Discussion_PostQuote'>When&nbsp;we take pictures of the sky with long exposure times. Why do the stars leave trails that go in a circle. Why dont they leave trails streaking across the sky instead of a circle? <br />Posted by Kewell</DIV><br /><br />Because they all rotate around the north (or south) pole, which is the axis the earth spins on. The North star is the only star that is almost at the same spot in the sky, day or night, Winter, Spring, Summer, or Fall. <div class="Discussion_UserSignature"> <p><font color="#000080"><em><font color="#000000">But the Krell forgot one thing John. Monsters. Monsters from the Id.</font></em> </font></p><p><font color="#000080">I really, really, really, really miss the "first unread post" function</font><font color="#000080"> </font></p> </div>