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Old 10-04-2009, 11:17 AM
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CoolhandJo (Paul)
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CoolhandJo is offline
 
Join Date: Oct 2008
Location: Sydney
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Why is my goto not accurate after drfit alignment?

I am wondring if anyone can help me? I have recently just installed a meade ultrawedge on my LX200gps 10". I am using WCS software to drift align.

1. Position scope facing true north (purchased a separate compass from orienterring shop) (compensate for magnetic declination by 12 deg to left facing north). I think I am in the truth north.

2. Level mount using bubble on wedge

3. Do GPS fix

4. Do drift alignment with WCS (Pretty sure I am accurate with this as the software is telling me I have achieved it - no visible drift present)

5. Put the scope in Polar alignment mode by slewing the OTA to the south with Dec reading 90deg

6. Choose two star alignment and the scope slews pretty close to the chosen star both times. Then I center using a ccd for accuracy.

7. Autostar then tells me align successful BUT when I choose a goto object their is about 5 deg miss on the object everytime. So you have to use the arrows to slew and "find" the object. This is really bad as when imaging distant object you need to be sure the goto is accurate.

One thing I did realise is that the MEade Ultrawedge manual instructed me to set my Dec Lat angle for my area, but others on the web say you minus your lat angle from 90 deg and set the wedge at that! Maybe this is why I am out?

Any help on this would be appreciated!

Last edited by CoolhandJo; 10-04-2009 at 11:31 AM. Reason: Updated information added
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