Go Back   IceInSpace > Beginners Start Here > Beginners Talk
Register FAQ Calendar Today's Posts Search

Reply
 
Thread Tools Rate Thread
  #1  
Old 26-04-2013, 05:38 PM
Andre27 (Andre)
Registered User

Andre27 is offline
 
Join Date: May 2012
Location: South Africa
Posts: 79
Drift alignment ,star for checking west or east

Hi all

Me again.

When choosing the star to check if the mount is to far east or west , do you choose one that is facing south at about the elevation = to your latitude (33deg in my case ) or one directly right above your head +- 90 deg to the horizontal ?

I apologize if this is a stupid question , but I have retrieved conflicting information concerning this.
I have spend the last three evenings trying to sort out my polar alignment , as i can not see the south celestial pole and my view is extremely constricted by buildings and trees on all sides.

Thank you

Andre
Reply With Quote
  #2  
Old 26-04-2013, 05:57 PM
pluto's Avatar
pluto (Hugh)
Astro Noob

pluto is offline
 
Join Date: Dec 2011
Location: Sydney
Posts: 1,982
I use a star to the north and fairly high, like around 70-80 degrees or something.

The information here is correct (scroll down to drift align): http://www.ozscopes.com.au/how-to-po...ern-hemisphere
Reply With Quote
  #3  
Old 26-04-2013, 08:44 PM
naskies's Avatar
naskies (Dave)
Registered User

naskies is offline
 
Join Date: Jul 2011
Location: Brisbane
Posts: 1,865
For azimuth alignment, you'll want to choose a star near where the meridian crosses the celestial equator - it's basically the highest point in the sky that the Orion or Aquila constellations will reach during the year.

The angle will be (90 deg + your_latitude) while facing North, so here in Brisbane (latitude -27 deg) that point will be at an altitude of 90 + -27 = 63 degrees.

In your case, that should be at an altitude of 57 degrees above due North.

NB: if your mount is connected to a computer, you may want to consider trying polar alignment software (such as AlignMaster or PoleAlignMax). You just need to be able to find certain star pairs in the sky, rather than at the meridian/equator and east/west horizons.
Reply With Quote
  #4  
Old 29-04-2013, 04:03 AM
Andre27 (Andre)
Registered User

Andre27 is offline
 
Join Date: May 2012
Location: South Africa
Posts: 79
Thanks for the reponse , bought Alignmaster , I shall try the software as soon as the cloudcover allows.
Reply With Quote
Reply

Bookmarks


Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off

Forum Jump


All times are GMT +10. The time is now 01:39 AM.

Powered by vBulletin Version 3.8.7 | Copyright ©2000 - 2025, Jelsoft Enterprises Ltd.
Advertisement
Bintel
Advertisement