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EQ6 Pro backlash adjustment

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#1 hickeydp

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Posted 26 March 2011 - 09:01 AM

Hi all,

I've spent a rare clear week here imaging and have noticed that there seems to be an excess of Dec backlash in my mount. I tried to adjust it out by tightening the bind on the worm until it stuck and then backing it off a little so as it runs smoothly. Does not see to have improved it much.

Anyone have experience doing this? Is there a procedure I should follow?

#2 alpal

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Posted 26 March 2011 - 11:12 AM

Hello again,
Not really - I've been told that there are 2 allen head screws
that you tighten & that you can use a cigarette paper
in some way to check that there is 1/1000 clearance.
Certainly - the guy who did my mount for me did a good job.

#3 bluedandelion

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Posted 26 March 2011 - 01:18 PM

Try this:
http://timsastroblog...up-for-eq6.html

The comments at the end of the blog are also very useful.

Ajay

#4 hickeydp

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Posted 26 March 2011 - 03:24 PM

Thanks for that Ajay, very interesting.

I also found this digging around for anyone else reading this that's interested...

http://www.astro-bab...p Down Home.htm

#5 alpal

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Posted 26 March 2011 - 06:24 PM

Some good links Damien.

I forgot to say that you need to check your handset
for the value of gain - it needs to be set to X1 -
not X 0.25 or X 0.5.
Also check that backlash compensation is set to zero.
It's somewhere in the menu.

#6 hickeydp

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Posted 27 March 2011 - 06:45 AM

Cheers Alpal I'll check that.

Have been looking at my mount more closely and there doesn't seem to be any play in the DEC or RA axes so I'm starting to think the problem may be more to do with PEC than anything else.

Think I will have to dedicate the next clear night to investigating this.






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