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BarryW
member


Reged: 09/08/08
Posts: 24
Hypertune an Atlas EQ-G?
      #3324515 - 09/09/09 05:07 PM

Has anyone hypertuned their Atlas mount? I'm considering the procedure, but am unsure if it's worth the cost.

Thanks,

B-

--------------------
Orion 8" SCT
Celestron Onyx 80ED
Stellarvue SV102
Apex 90MM MCT
Atlas EQ-G
Canon 40D
SBIG ST-2000
Starshoot guider
Bunch of other stuff..


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AZStarGuy
Pooh-Bah


Reged: 05/05/08
Posts: 1052
Loc: Scottsdale AZ
Re: Hypertune an Atlas EQ-G? new [Re: BarryW]
      #3325788 - 09/10/09 10:56 AM

If you're into serious Ap then it's worth checking out. I'm unsure of the cost - you'll have to do some research on that - but depending on what it runs, you may be better off upgrading to a completely new system such as a GM-8 or GM-11 etc...

Here is a link on Hypertuning an EQ-6 which ought to be pretty similar: Hypertune EQ-6

You can also do a quick Google search. There are hits all over the place. Try PM'ing some of the users.

--------------------
Ron

Teeter Dob #TT89
(18" f4.5 Zambuto)
Thinning The EP Herd



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lawrie
Carpal Tunnel


Reged: 01/31/06
Posts: 2083
Loc: Okanagan Valley
Re: Hypertune an Atlas EQ-G? new [Re: AZStarGuy]
      #3327978 - 09/11/09 01:00 PM

Here is a site,
http://www.astro-rubylith.com

I am about to change the bearings/grease in my Atlas.
From what I have seen, it improves the mount quite considerably. I would like to beef up the counter wieght bar too.

--------------------
Clear Skies
Lawrie

9.25 Edge/Hyperstar
NP 101is
WO 80fd
G-11/Atlas
ST 8300




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BarryW
member


Reged: 09/08/08
Posts: 24
Re: Hypertune an Atlas EQ-G? new [Re: lawrie]
      #3328051 - 09/11/09 01:45 PM

Lawrie,
I went ahead and took mine apart yesterday, cleaning it all up and repacked the bearings. Here's what I found- if you use the gear set/adjustment screw(front back) you're going to spend a TON of time trying to get the gearlash set.I literally spend two hours on my dec axis and couldn't get it right using the set screws. I backed both screws off, and evenly put a **slight** amount of pressure onto the cover mating the gears and locked it down using the 4-5mm bolts. It's super, super quiet and slews unbelievably smoothly.. that rattly sound that seems to be inherent to the Atlas mount is gone on both axis.
I don't have any graphs or hard data to show you before and after, but can tell you that I struggled to get 5 minute guided exposures without oblong stars before I did this... after, I took a 5.. 6.. 7..8.. and 10 minute test shot last night with perfectly round stars. What an amazing difference.It cost me a can of parts cleaner and a tube of grease...

Edited by BarryW (09/11/09 01:47 PM)


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rmollise
Postmaster


Reged: 07/06/07
Posts: 12033
Re: Hypertune an Atlas EQ-G? new [Re: BarryW]
      #3328565 - 09/11/09 07:06 PM

Quote:

Has anyone hypertuned their Atlas mount? I'm considering the procedure, but am unsure if it's worth the cost.

Thanks,

B-




Depends. What's wrong with the mount as it is?

--------------------
Uncle Rod

Rod's Latest Book:
Choosing and Using a New CAT
Uncle Rod's Astroblog: http://uncle-rods.blogspot.com/


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BarryW
member


Reged: 09/08/08
Posts: 24
Re: Hypertune an Atlas EQ-G? new [Re: rmollise]
      #3328921 - 09/11/09 10:56 PM

Nothing now. I had some slop in my dec axis resulting in sloppy tracking/guiding and misshaped stars and thought that hypertuning might fix the problem. The mount is now better than I ever expected it to be.

--------------------
Orion 8" SCT
Celestron Onyx 80ED
Stellarvue SV102
Apex 90MM MCT
Atlas EQ-G
Canon 40D
SBIG ST-2000
Starshoot guider
Bunch of other stuff..


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lawrie
Carpal Tunnel


Reged: 01/31/06
Posts: 2083
Loc: Okanagan Valley
Re: Hypertune an Atlas EQ-G? new [Re: BarryW]
      #3329606 - 09/12/09 11:05 AM

Hi Barry, good work and nice to know. The main culprit seems to be the 608 bearings on the worm, I will replace them and regrease the other bearings (unless they show problems). Everyone that goes through this says they have a better mount after.

--------------------
Clear Skies
Lawrie

9.25 Edge/Hyperstar
NP 101is
WO 80fd
G-11/Atlas
ST 8300




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BarryW
member


Reged: 09/08/08
Posts: 24
Re: Hypertune an Atlas EQ-G? new [Re: lawrie]
      #3330444 - 09/12/09 08:13 PM

There's a bearing on the worm gear?! Kidding.

One thing I did notice and forgot to mention is how inconsistently the stock bearings were greased. To my surprise, some were well greased while others were almost dry. Also, there were flakes of something(paint, perhaps?) stuck in the gears that was a pain to get out.


Do you also have a lot of slop in your mount?

--------------------
Orion 8" SCT
Celestron Onyx 80ED
Stellarvue SV102
Apex 90MM MCT
Atlas EQ-G
Canon 40D
SBIG ST-2000
Starshoot guider
Bunch of other stuff..


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