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Have u seen my long post where I talk about characterizing the DEC backlash with PHD2 guiding assistant? Too tight worm mesh will cause backlash as well, and I suspect you have a too tight worm mesh

Hello folks, I have a new version of the mount with the tucked motors.? When slewing, they are really loud, like SCREEEEEEEEE! I'm worried it disturbs my neighbors in the middle of the night. Is the

Hello, Is there a way to figure out how to set the mount to the CDW position without using the bubble levels?? Since I set the mount on pavement, it's not always perfectly level.? But I do need the

And here is part II (now to try to stitch them) https://www.astrobin.com/fdd5jv/

Good call.? I'll put my money on it being related to the worm bearings (either the worm blocks, despite the OPW block, being slightly misaligned so pinching, or a bad bearing).? Of course your 76s

They should all fit just fine. The only parts that I know of that cannot be carried directly from the current G11 to the older Celestron labeled G11 are the plastic clutch discs and the second

Logged a ticket directly with Losmandy to get to the bottom of these issues. I dont think a 1"-3" re-occurring RA variance (+/-) is expected, so I must have set something up wrong. Will report back

Hello, Does anyone know if the following replacement/upgrade parts for the G-11 will fit on the old Celestron branded G-11? G-11 SPDV saddle plate CKS (or CKS B) clutch knobs Polemaster adapter for

Hi Jean-Philippe, Yes, you can set Gemini location and time from the GPS connected to your PC. In Gemini.NET driver, bring up the GPS window and connect to the GPS. You should see data being received

For those interested in cage guided needle bearings, how they work and their relative advantage over the Torrington full compliment needle bearings used by Losmandy, I found this manufacturer article

Peter: I have a few guiding runs but none long enough to get a meaningful FFT.? Weather has been dreadful but hopefully in the next few days I can grab a few unguided worm period's worth.? If the

Peter, These are some interesting mods you are undertaking. I'm sure you will let us know if they are successful. With regard to the needle bearings, I imagine there needs to be some level of play

Keth, Do you have any FFT graphs you could share? If you have a large 9.6s error then the pinion gear bore hole is likely off center. The 80s error is very interesting, and possible confirmation it

I thought I'd report back on my efforts on the 25:1 McLennan gearbox mod to give another data point, and the results are ... not good.? To recap, the reason for trying these are that both replacement

Good investigations by all you great folks. Yes, your remark about the needles able to shift to be angled to the 1.25 inch shaft....another fellow reported this had occurred in his (GM8?) mount year's

Mark, So you took the easy why out hey! :) The problem you describe may be attributable to the design of the needle bearings. The stock bearings are full complement Torrington. They do not necessarily

Michael, I actually have an older mount. There is no wiggle and the left hand bearing block mount hole. I did the spring loaded worm mods myself. For me the jury is out as to whether a SLW is better

I think your math is pretty close now. But the seeing is also a consideration. For exposures longer than a few seconds, most of the time seeing is going to make tracking accuracy below 1/4-1/2 arcsec

Thanks Les ! In the full mosaic I will crop a lot less vertically since there is a lot of nebula in the lower portion of the image on the other side but I liked this closer crop for this portion.

Nice! It looks like the equipment is working well for you, and I really like the composition. -Les