Author Topic: Orion XT12G not tracking well  (Read 29 times)

Davione Boone

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Re: Orion XT12G not tracking well
« Reply #15 on: January 29, 2018, 10:32:54 PM »
Thanks, Bill
pm sent

holdfontrosci

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Re: Orion XT12G not tracking well
« Reply #16 on: January 30, 2018, 03:43:00 PM »
Sent, hope it helps.

Francisco Hossain

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Re: Orion XT12G not tracking well
« Reply #17 on: January 31, 2018, 05:59:28 AM »
UPDATE ON XT12G not tracking well and ORION TECH SUPPORT;

First off, I'd like to thank you all for your input, suggestions, and concern (special thanks to bluesteel, Bill K., Tim M, and Jay)

When my XT12G arrived a couple of weeks ago, I began familiarizing myself with the controls. I've owned more than one computerized mount and I figured ORION's would be about the same.

#1 surprise :
The manual explained how to set the "Elevation Limits" on an alt-az mount (XT12G) so I tried setting the limits and the scope didn't know how to act. No where close to what it was suppose to be.
I figured a quick "chat" with Orion Tech Support would solve the problem. NOPE. I was told that that feature was only for Equatorial mounts.
That was their answer.

#2 surprise:
I did get the GOTOs to function properly, but the tracking was not acceptable. ( I appreciate all of your suggestion and tried them all but tracking is still off) After careful alignment procedures, the target will leave a 20mm eyepiece in about 15 minutes (at best).
I e-mailed ORION Tech Support and was told by one agent to " ...update the firmware to 4.36 because 4.05 has been known to have some glitches"
After another e-mail, another agent responded with..."update to 4.36...our customers are generally happy to run through an update in the beginning, so that they will be prepared for further updates in the future"
WHAT????
My response: " I don't have the equipment to upgrade the faulty firmware. It appears that one needs a laptop to take out to the telescope so the hand controller will have a power source. Also, a serial port is needed, which I don't have!
How about this: send me an updated controller (V4.36) along with a return label for the defective controller. Then we'll see if that is the only problem.
It's already been mentioned that v4.05 has some bugs in it."

I also mentioned in more than one e-mail that the controller has completely "froze up" while trying to go through an alignment procedure and I had to kill the power and reset everything... only to have it do it again.

I e-mailed again last night hoping to get a satisfactory response.

Don't mean for this to be a rant against Orion Tech Support, I'm just a bit surprised that there's been no help for two weeks.

Thanks again to you all for your support,

Don

nuitropheneg

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Re: Orion XT12G not tracking well
« Reply #18 on: January 31, 2018, 12:58:34 PM »
One of the keys to good tracking on these mounts is careful goto alignment using a crosshair eyepiece. That said, with this setup, there's only so much you can expect tracking in alt-az. If you have to mash a button a time or two over 15-minutes, that is not a huge deal IMHO.

Michael Zamora

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Re: Orion XT12G not tracking well
« Reply #19 on: February 02, 2018, 02:00:59 PM »
"After careful alignment procedures, the target will leave a 20mm eyepiece in about 15 minutes (at best)."

That's not bad. GoTo on an alt/az mount is only so good. I'm sorry to say but you will never get the precise tracking on an alt/az dobsonian mount that you get with an EQ mount.

Calvin Dolla

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Re: Orion XT12G not tracking well
« Reply #20 on: February 03, 2018, 10:46:39 AM »
Quote

Can someone explain why? On an EQ mount, there is only one axis of rotation. On Alt-Az, there are two. But I don't see this as being substantially more difficult to do.

erenlinra

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Re: Orion XT12G not tracking well
« Reply #21 on: February 04, 2018, 10:47:26 AM »
It is substantially more difficult to do. Which is why there was no alt-az tracking till computers came along. Tracking rate of each motor will be different depending on where you are in the sky. It's vital that the scope know where it is (goto alignment) before it can track properly in alt-az.

Tommy Evans

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Re: Orion XT12G not tracking well
« Reply #22 on: February 09, 2018, 07:42:22 AM »
Thanks for all the replies and input.

I guess I was expecting more. My iOptron Mini Tower Pro (alt-az) gives me excellent tracking. I can leave the scope for an hour and the target will still be well within the fov.

Anybody have any thoughts on why the controller would "lose its brain" and freeze up? (has done that more than once)

Thanks

zajusima

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Re: Orion XT12G not tracking well
« Reply #23 on: February 09, 2018, 11:29:31 AM »
What were you doing when it happened? How were you powering the scope? How are your connections?