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Solution to polar drift alignment issue

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#1 cgordo5

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Posted 04 September 2013 - 08:10 AM

Hi,

I could never get the polar drift alignment to work on my 10" LX600. It would slew and search repeatedly, but never finish. I called Luis at Meade about this and he sent me a document (attached) on how to resolve this. The short answer is that the issue is caused by the Starlock narrow angle camera being out of focus. I followed the directions in the document and the polar drift alignment started working for me.

Unfortunately, my house is just tall enough to block the eastern target for the second half of the drift alignment, but at least I was able to get the azimuth alignment done.

Charles

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#2 jrcrilly

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Posted 06 September 2013 - 10:52 AM

There's a function in the Starlock utility that permits you to watch as you focus and avoid the trial and error - but it is irritating to use because the download time per frame is long.

#3 cgordo5

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Posted 08 September 2013 - 06:59 PM

Yes, I tried that but it's very difficult to judge the image sharpness. The image didn't really change much when I changed the Starlock narrow angle camera focus. The method in the document worked better.

Also, by moving my telescope position a bit the polar alignment is now able to analyze stars the east and I got a complete alignment which was pretty good. I was able to get some 5 minute exposures with slight or none apparent tracking error. I think it still may be necessary to do a little manual drift alignment even after using the telescope drift alignment.

Charles

#4 bamejer

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Posted 27 January 2016 - 09:06 AM

I haven't had any luck with the link for the STARLOCK OUT OF FOCUS pdf.  Can someone upload it again?

 

Jerry



#5 moxxyman

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Posted 27 February 2018 - 05:59 PM

I echo the request for the STARLOCK OUT OF FOCUS.pdf  . I am going to attempt to check the focus on my Starlock using a Bahtinov Mask. I would appreciate the input of anyone who has tried this procedure. Successes or failures are both important sources.
 

Wayne



#6 MistrBadgr

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Posted 27 February 2018 - 07:46 PM

I sent in an email asking about this document.  I don't know anything about it myself.  If anyone does have a copy, please go ahead and attach it to a post for those that would like to have it.

 

Thanks,

 

Bill Steen


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Bill Steen, Sky Hunters' Haven Observatory, Broken Arrow, Oklahoma

#7 bamejer

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Posted 19 March 2018 - 09:55 AM

Here's the doc.

Attached File  STARLOCK OUT OF FOCUS.pdf   170.62KB   63 downloads



#8 MistrBadgr

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Posted 19 March 2018 - 11:42 AM

Thank you! 

I do not have one of these scopes, but will download this document onto my hard drive. for future needs.

 

Bill Steen


Bill Steen, Sky Hunters' Haven Observatory, Broken Arrow, Oklahoma

#9 moxxyman

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Posted 11 July 2018 - 04:30 PM

Thanks for posting the pdf. Focusing is difficult even with the Starlock tool. I tried a small Bahtinoff mask but was unable to get the cross shape diffusion image. I suspect the next best option is to use the moon. I had problems with elongated stars when trying to image M106 on three consecutive nights. Last night I noticed Starlock kept losing lock on the target, and I assume this was the cause of elongated stars. I await the Moon to check focus of Starlock, and I will try M106 again to see if a decent lock can be established.

 

Wayne Byrne







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