Just ordered an EQ2
Posted 07 April 2010 - 03:18 PM
Orion is the only one I could find that sells the mount separately. But, their offering doesn't use a dovetail for mounting a scope. Celestron sells one with their Astromaster 90mm, but besides being more money as a package, it's a little too stylized to go with a classic long tube 60mm. Finally, I found the Sky-Watcher Great start 80mm EQ2 at Adorama. It comes with a dovetail, a pretty decent looking optical tube, and a bunch of accessories for 50 bucks less than the Orion mount alone! I think it's a discontinued item, so I grabbed one.
The aluminum legs will have to be replaces with wood, but otherwise, it's just the ticket. Being for planetary at higher powers, I would like a tracking motor. Do any of you know which one would be better. Orion has one that seems to offer a greater amount of control, and Celestron has one that is much cheaper, that has sidereal as well as other tracking rates, that has to be detached to use the slow motion controls. Anybody use or have opinions on the two types?
Posted 07 April 2010 - 08:22 PM
I think it is always useful to use the mount RA clutch and be able to use the slow motion controls without detaching the tracking motor, so Orion´s seems the best option for me.
Posted 08 April 2010 - 05:06 PM
If I'm not mistaken, the EQ2 has a clutch built-in to the mount head. It's a lever that is mounted next to that little wheel on the side.
This is like the one I'm talking about only it's for your mount - you'll notice that one buyer hated it:
Posted 08 April 2010 - 06:20 PM
If you need more info, I can dig it up. I also found the instructions for installing and using the part somewhere online.
Posted 08 April 2010 - 07:19 PM
Posted 08 April 2010 - 07:59 PM
Posted 08 April 2010 - 09:18 PM
Posted 08 April 2010 - 09:47 PM
Posted 09 April 2010 - 12:14 AM
Posted 09 April 2010 - 03:46 AM
Posted 09 April 2010 - 06:00 AM
BTW, on the Orion website, when you are looking at the EQ2 mount page, they show a drive on the side of the page, the EQ-2M. That is NOT the correct drive for the EQ2 mount.
I have both the EQ2 and the CG3 and I have both the correct EQ2 Orion drive and the CG3 Celestron drive.
The corerect drive has a gear sticking out of the black motor box. That gear meshes with the large gear attached to the mount. The clutch allows you to disengage the two gears by tilting the motor box. So the clutch is useless without the correct motor.
The drive shown has a black plastic piece that slips over an axle.
Posted 09 April 2010 - 09:18 AM
Posted 09 April 2010 - 09:51 AM
this is the correct motor for the EQ2/CG3
notice the small gear under the spring. That gear meshes with the large gear wheel on the EQ2 mount. The long T bolt gets locked down when in use and gets loosened when you want to use the clutch to disengage the motor. The clutch separates the two gear wheels. The spring facilitates the function of the clutch by allowing the gears to reengage when the clutch is released.
take note here the difference in these two motors
the correct syle motor
the INCORRECT style motor
Posted 09 April 2010 - 09:56 AM
EQ-2M Orion Electronic Telescope Drive System #07827
I actually bought mine while the Orion sale was going on, so got it for $62 instead of $73. Also, if you poke around a bit, you might be able to find a code for free shipping on an order over $100 (if you need anything else).
Posted 09 April 2010 - 10:01 AM
Posted 09 April 2010 - 03:55 PM
Posted 10 April 2010 - 08:41 AM
David,gotta go run some errands today,but will PM you about the OTA later.
Posted 10 April 2010 - 09:55 AM
To help you out on getting a dovetail, here was my experience.
There are two ways to mount the dovetail saddle....well three. First, there appears to be a saddle that Orion or whoever makes to retrofit the mount. I found one that would give a 1/4-20 on it, but could not track down a dovetail. No one seems to carry it or know how to get it.
Second - you can mount a bar on the current bar, and attach a dovetail saddle to that. ADM and possibly ScopeStuff have that configuration.
Third - and this is what I went with. I removed the current configuration, and added an ADM saddle directly. This way the rotation point was as near to the mount as possible. However, I could not find a direct fit anywhere. In corresponding with Anthony at ADM, he had me order a saddle for a different hole pattern, and then he made custom holes to fit my mount. This worked fine, except the jaws were a bit too wide to accommodate the other dovetail I had. So I sent it back (and I think I sent the other dovetail with it for him to test with) and he shaved a bit off the inside of the jaw to make things fit. I also ordered a dovetail from him that I mounted the rings that came with the Sky-Watcher to, so now all my scopes can go on the EQ2 interchangeably.
In the end, I spent more on getting things to work than on the scope/mount, but I now have a usable solution!
I can dig up part numbers, etc., if needed.