Polar Align

wAi_kiT · Post by **wAi_kiT** » Mon Nov 28, 2005 8:39 pm

How do we polar align when we can't see polaris, since using a compass doesn't work that good.

chrisyeo · Post by **chrisyeo** » Mon Nov 28, 2005 9:25 pm

Hi!

A compass works pretty well actually. That's called a 'rough' polar alignment. By setting the latitude and pointing to compass north, you'll find that it is good enough for visual observing.

For accurate polar alignment, we use a method called drift alignment, which basically tracks the motion of stars through the eyepiece and compensates according to the direction that they drift. Search the web for 'drift alignment' and you'll find the information you need.

Cheers!
Chris

wAi_kiT · Post by **wAi_kiT** » Mon Nov 28, 2005 9:41 pm

oh ok... By the way, is the latitude of Singapore about 1 degrees? CoZ this value is often given in terms of minutes and seconds

neoterryjoe · Post by **neoterryjoe** » Mon Nov 28, 2005 9:51 pm

Hi!
You can check heavens above site for more accurate coordinates of your place. And yes, it is 1 degree and something(depending on your location)
www.heavens-above.com

soulfrost · Post by **soulfrost** » Tue Nov 29, 2005 4:15 pm

en.wikipedia.org/wiki

^ not exactly helpful ... but you can try.