Morris, raising the tolerance might be okay if you don't know image scale exactly, but not if the image scale is already known. When you see "Bad X-scale" that means even though the plate solve was

Terri, Eckhard. I am glad to hear your comments it. Thank you. Jian Yuan Peng

Thanks Terri. -- Dean Jacobsen http://astrophoto.net/wp/ Image Gallery - http://astrophoto.net/wp/image-gallery/ Astrobin - https://www.astrobin.com/users/deanjacobsen/

Thanks Bryan! I think I'll bump my tolerance by a percent and see what happens. :) On 7/11/2020 10:17 PM, Worsel via groups.io wrote: -- Morris Jones, Monrovia,

Mojo https://ap-gto.groups.io/g/main/message/71258 Bryan

After having good luck with APPM, the Mach1, and the Traveler, I've moved on this week to trying it with the 1100GTO and AP180. The longer focal length and long moment arms certainly make

No lose wires that I can see. - Mikko

OK, plugged the RA to Dec (cannot plug Dec to RA as it’s too short) and nothing happens. When I open the gearbox cover I see the gears turning about 180 degrees and that’s all. Mikko

That is really beautiful Jian Yuan.

Great shot Dean. T

try what we suggested - plug the RA cable into the Dec motor. Rolando

I already tried the second Y cable which I ordered. I can’t believe the cable is the issue unless the brand new Y cable is faulty also. - Mikko

You have a bad connection to the motor encoder. Could be in the Y cable, could be inside the gearbox, could be a loose wire or broken wire on one of the connectors on the RA part of the cable. First

Swap the two Y-cable motor connectors on the motors with each other and see if the problem switches to the DEC motor. Then report back. Virus-free. www.avg.com

Yes previously the slew took longer and was more random. So long that a couple of times I had to cut the power so that the scope won’t hit the tripod. No encoders in Mach1, not at least in mine. If

"...the RA axes immediately slews about 20 degrees after which it stops and the yellow light is on." New information! (at least to me?) Sounds like the encoder on the back of the RA motor or a

Well I changed the power unit first yesterday and that didn’t help. Neither did the power cord and actually at this point the mount even refused to connect. So I had not high hopes when I changed

Thanks for taking a look guys. -- Dean Jacobsen http://astrophoto.net/wp/ Image Gallery - http://astrophoto.net/wp/image-gallery/ Astrobin - https://www.astrobin.com/users/deanjacobsen/

Beautiful exploration of a "quiet" corner of the night sky. Michael

Beautiful job on this Dean! So much in the FOV! Stuart Heggie http://www.stuartheggie.com/ -- Stuart http://www.astrofoto.ca/stuartheggie/