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Motor for EQ3-2 mount?


TheThing

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Hi.

from what I have read the gear ratio is different.

setting an EQ3-2 to work with Autostar

The worm ratios on the EQ3-2 mount are 65:1 on the DEC and 130:1 on the RA. These translate to Autostar ratios (using Steve Bedair's method ) as follows:

DEC 01.48296

RA 02.96592

(CG5/EQ4/LXD55/LXD75/SVP mount's RA and DEC)

(# of teeth in worm wheel) = 144

3.28533 on both RA and DEC.

hope this helps

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I should clarify perhaps, as it's not quite as complicated as that! (But thanks for taking the trouble to reply!)

I have a Soligor EQ3-2 mount and I want to motorise it to make tracking easier (and cos I'm lazy!) - not GOTO, just tracking. If I buy, for example, a SW single axis or dual axis motor, will it fit straight on the Soligor mount and turn it at the correct speed?

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Hi

I took the DEC and RA drive from an EQ3-2 and put them on a CG-4 mount,

the gear ratio does not match as when tracking the RA lags very slightly.

so I the tried the drives from a EQ4 when tracking the RA very slightly to fast.

I am at present trying to obtain a set of drives for a CG-4 EQ mount.

I was told that the EQ3-2 was the same ration but trial proved this to be wrong.

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Hi

I took the DEC and RA drive from an EQ3-2 and put them on a CG-4 mount,

the gear ratio does not match as when tracking the RA lags very slightly.

so I the tried the drives from a EQ4 when tracking the RA very slightly to fast.

I am at present trying to obtain a set of drives for a CG-4 EQ mount.

I was told that the EQ3-2 was the same ration but trial proved this to be wrong.

The CG4 and EQ3-2 are the same mount.

Peter

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I should clarify perhaps, as it's not quite as complicated as that! (But thanks for taking the trouble to reply!)

I have a Soligor EQ3-2 mount and I want to motorise it to make tracking easier (and cos I'm lazy!) - not GOTO, just tracking. If I buy, for example, a SW single axis or dual axis motor, will it fit straight on the Soligor mount and turn it at the correct speed?

Is the mount like this one ? http://stargazerslounge.com/equipment-help/88997-what-mount.html

Peter

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I have both the EQ3-2 and CG-4 they are not the same mount they are diferent in castings, as I said in my post the EQ3-2 motors when fitted to the CG-4 does not track at the right speed, The mount is correctly polar aligned.

The same motors on the EQ3-2 do track correctly.

The CG-4 is the same as the one sold in the OMNI XLT120 package.

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I can only repeat myself, the CG4 and EQ3-2 are basically the same mount. They are both copies of the Vixen Polaris mount. The mounts are the same. Check my sig, CG4 mount on Vixen tripod, Skywatcher polarscope and Skywatcher EQ3-2 goto upgrade. Before the goto upgrade the mount also used Skywatcher dual axis clock drives. I think I might have spotted something was wrong as the mount is now about 8 - 9 years old.

Peter

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Neither of my mount have the same casting as the one you refer to,

The EQ3-2 is 18 months old, The CG-4 is 6 months old.

I do not want to hijack Thethings posting, I was just trying to help him with my expenience of attempting to add Dual drives to my mount.

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Yep, my mount/tripod are just like that one.

Sadly, it seems Soligor have pulled out of the telescope market - they don't list them on their site anyone an a couple of e-mails to them over the last couple of months have not met with any response.

Thankfully, the very kind Kev has offered to let me try before I buy on an EQ3-2 motor, so I'll let you know how it goes.

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