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Some issues with iOptron iEQ45m

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#26 mega256

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Posted 14 February 2013 - 07:23 PM

zjc26138
Your video looks just like they way my mount is..And mine works great with a C11-hd ,with the 10" extension bar and
the 2 11-lb weights. My goto's and tracking is right on..
I do have the 8407 hc and allways do an electronic balance after doing one by eye.Mine looks and sounds just like your's.Balance is important,as in any mount. :jump:

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#27 zjc26138

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Posted 14 February 2013 - 10:09 PM

That's good to hear. Beautiful setup by the way. If I had the funds Id spring for a C9.25 or the C11. I wonder if it would be worth while to do the upgrade to the 8407?

#28 Astronewb

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Posted 14 February 2013 - 10:31 PM

Zach, I checked the video several times, your DEC axis is definitely not right,it not only has up and down motion, if you check the video closely..it also has side to side motion. You should be checking with fingertip pressure only.

My mount's DEC, even when gripping the ota like a bat and moving it, has no appreciable play. I would suspect you probably have 3 issues.

1. Your hinge pin holes are elongated, allowing the hinge pin to float around in the hinges.

2. Your hinge pin to housing clearance is excessive.

3. The hinges are misaligned or loose as well.

Your RA seems to be okay...I could tell you were really rocking it, too much in fact..that just cams the worm away from the gear.

Here's an image that illustrates the hinge pin wear:

Posted Image
RA and DEC hinges iEQ45 by Astronewb2011, on Flickr

Here's how you fix it permanently:
Posted Image
RA hinge with bushing installed by Astronewb2011, on Flickr

If your mount is still under warranty, email iOptron for a new set of DEC hinges and replacement instructions.

Regards,

Paul

#29 zjc26138

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Posted 15 February 2013 - 12:46 AM

Thanks again for the info Paul. I'll take another look at my mount in the am and report back.

#30 zjc26138

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Posted 15 February 2013 - 11:31 AM

I took some photo's of the hinges.

RA Motor: http://www.flickr.co...in/photostream/

RA Motor: http://www.flickr.co...in/photostream/

Dec Motor: http://www.flickr.co...in/photostream/

Dec Motor: http://www.flickr.co...in/photostream/

#31 zjc26138

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Posted 16 February 2013 - 05:30 PM

Any thoughts on those pictures?

#32 mgwhittle

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Posted 16 February 2013 - 06:42 PM

One of your DEC hinges looks out of round to me, but you may need to actually disassemble it fully to make sure about all of them. Based on your video, you definately have way too much play on the DEC axis.

#33 EFT

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Posted 16 February 2013 - 07:56 PM

Any thoughts on those pictures?


Plenty of thoughts. None of them good. :mad:

#34 zjc26138

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Posted 16 February 2013 - 07:59 PM

That's what I thought. :tonofbricks:. I guess I'll be calling iOptron on Monday for parts. :/

Time to start saving for an AP900.

#35 mgwhittle

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Posted 16 February 2013 - 08:12 PM

That's what I thought. :tonofbricks:. I guess I'll be calling iOptron on Monday for parts. :/

Time to start saving for an AP900.


Now you are talking. Once you get a 900GTO you will be spoiled!

#36 zjc26138

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Posted 16 February 2013 - 08:27 PM

I've never used an AP mount, but I have heard so many great things about them. . It's the only logical choice. Either the 900 or a used 1200. :)

#37 Astronewb

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Posted 16 February 2013 - 09:23 PM

Any thoughts on those pictures?


Yep..I looked at your DEC hinge pin at full resolution..you have the dreaded 'oval hole' syndrome....:)

When/if you replace the hinges, check the play of the worm itself...it's tensioned by the large brass nut. If it has any side to side play..loosen the 2mm lock screw, and tighten the brass nut with a pair of lock ring pliers (or a couple of small nails, driven through a piece of wood, spaced correctly to fit the holes.) Caution, if you do this, do not overtighten the nut..just screw it in enough to remove the slack.

Cheers, and good luck,

Paul

#38 zjc26138

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Posted 16 February 2013 - 10:13 PM

Thanks for the info Paul. I'm not 100 % sure I should change the dec pins considering I have been able to guide 7 minutes. Though the last few times I haven't been able to go past a few minutes. Though that's my fault/light pollution more than anything. I have all the time in the world to fix the mount now (out of work). I assume they are not to hard to change. I'll give iOptron a call Monday. Hopefully I can get the parts soon. Though with my main imaging scope out of service right now it's not a big hurry.

#39 orlyandico

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Posted 17 February 2013 - 05:33 AM

there's a used 1200 for $8K on the mart.

there was a used 900 CP2 for $5.4k last week. that's less than my mach1. did i regret it.. not really. upgrading to a CP3 would cost $1k.

the only time my mach1 will not be enough for me is if i want to put a CDK12.5 on it. that's not gonna happen till i have a permanent obs.

until that time.. the mach1's 30lb (vs 55lb for the 900) wins.

#40 zjc26138

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Posted 17 February 2013 - 11:36 AM

If I was working I probably would have already bought a used 900. Until I have the funds I'll continue to window shop. :)






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