Go Back   IceInSpace > Beginners Start Here > Beginners Talk

Thread Tools Rate Thread
Old 26-11-2020, 11:47 AM
taylorhan (Jialuo)
Registered User

taylorhan is offline
Join Date: Oct 2020
Location: Sydney
Posts: 10
About PHD2 Polar Alignment

Hi everyone,

I am trying to do the polar alignment on my balcony which is facing to the west.
I have a guide camera so I can use PHD2 to do the polar alignment.
I am wondering do I have to choose the star very close to the meridian? Or I can randomly choose a star to do drift shift? (i.e. Jupiter)

Do you guys have any method to suggest to do the polar alignment on the balcony or small FOV?

Reply With Quote
Old 27-11-2020, 12:18 PM
The_bluester's Avatar
The_bluester (Paul)
Registered User

The_bluester is offline
Join Date: Feb 2011
Location: Kilmore, Australia
Posts: 2,974
When doing a drift alignment you actually use two steps, one near the equator and meridian and then one near the equator but much closer to the horizon. When you point somewhere between the meridian and horizon you see the result of both the azimuth and alt errors, for instance at 45 degrees past the meridian you see the result of both, evenly mixed. If you had equal errors in opposite directions it would look well aligned but pointed anywhere else it will be off.

If you can point to the meridian the best bet is to point at the equator and as close to the meridian as you can which lets you isolate and adjust only for the azimuth error, then drop to around 30 degrees from the horizon and do the altitude as there should not now be any significant azimuth error mixed in.
Reply With Quote


polar alignment

Thread Tools
Rate This Thread
Rate This Thread:

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 12:33 PM.

Powered by vBulletin Version 3.8.7 | Copyright ©2000 - 2021, Jelsoft Enterprises Ltd.
Limpet Controller
NexDome Observatories
Astronomy and Electronics Centre