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Old 23-05-2010, 03:37 PM
Barrykgerdes
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Barrykgerdes is offline
 
Join Date: Feb 2007
Location: Beaumont Hills NSW
Posts: 2,900
Polar alignment of the LX200 on a wedge can be time consuming and frustrating job.

The first and most important task is to find the exact 90 degree position of the OTA. Without this you can chase your tail all night.

This is the procedure I would use for a first effort:- Do a drift alignment to get the the wedge azimuth correct

Next set the OTA to the exact 90 degree position established previously.
Re start the telescope from the position of OTA at 90 degree. forks down horizontal and Finderscope underside.

Let the scope slew to Sgma Octans. AT THIS STAGE do not adjust the wedge azimuth. the best position was already found with the drift alignment. Just adjust the altitude to get Sigma Octans in the eyepiece centered in the vertical plane only.

Slew to the alignment star and bring it to the centre with the slewing contro.ls. If you only need to use the east/west you are probably pretty close to aligned. Re check everything again and you should be in business.

I had my LX200 on a permanent wedge and could never get Sigma Octans in the centre although my wedge was within an arc minute of correct and the gotos within two arc minutes always.

Barry
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