How can I prevent the NexStar GPS error off of true north?

» Support Center » Knowledgebase » NexStar GPS FAQs » How can I prevent the NexStar GPS error off of true north?

	How can I prevent the NexStar GPS error off of true north?

Answer The older NexStar GPS telescopes (those with version 2.2 or older hand controls, all those without versions for the hand control) have the North and Level method programmed in the firmware. These scopes will align to magnetic north, which is about 10-20 degrees to the right of true north for much of western North America.

Your telescope has a compass calibration routine that allows you to correct for this error or offset. To calibrate the compass, you will need to do a successful GPS alignment and properly center the alignment stars.

Once you get the ALIGNMENT SUCCESSFUL message, press the MENU key. Go to UTILITIES – COMPASS. Select CALIBRATE, press ENTER. You should get a message back that says ONE MOMENT and then CALIBRATION SUCCESS.

The next time you do an alignment, the compass calibration will compensate for the variance between magnetic and true north. Your next alignment will be much more accurate. Your calibration is good for all observing in your region. You’ll have to do it again if you move the scope to a different part of the country.

Article Details

Article ID:

1927

Created On:

Oct 16 2008 03:01 PM