View Single Post
  #1  
Old 17-01-2009, 03:19 PM
ColHut (Colin)
Registered User

ColHut is offline
 
Join Date: Jul 2006
Location: Perth WA
Posts: 266
EQ mount and celestial sphere

Dear all,
A couple of questions.

Suppose my eq mount is in the home position - aligned with the pole and pointing at celestial south. Further suppose that the local line of RA passing perpendicular to the ground is 6 o'clock. i.e. Orion is just east of N/S. Now if I swing the scope clockwise without altering the RA (i.e in declination only) through Tucana I am on RA 0. If left past corvus then RA is 12. Is this right? This seems possible because we only use +90 t0 -90 for declination but use a full 24 hors for RA.

cheers
Reply With Quote