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I have owned a CG11 for 5 years and it has served me well. I have recently disassembled and relubed the mount with Radio Shack Lube Gel lubricant. So far so good. I am in the process of computerizing the mount with Mel Bartel's system. Check here for his website giving lots of information. http://zebu.uoregon.edu/~mbartels/altaz/altaz.html Will get back to the group when it's up and running. Don

I picked up a used G-11 mount fairly recently and while I am generally happy with it, I would like a slightly smoother operation. I am not, however, in any way mechanical and cringe at the idea of disassembling this magnificent piece of machinery. Are there techniques for improving the movement of this mount without serious disassembly? Any websites explaining these techniques? David David E. Bell The Gray Wizard dbell@... www.graywizard.net "Wisdom begins in wonder." - Socrates

I Would also like to add that when re-installing both the RA Shaft, and the Dec Shaft into thier respective housings to carefully, and slowly slide these back in, maintaining proper alignment, as not to bang the Rollers Bearings in each of the Housings. The difference you will see, and feel in your mount will be unbelieveable. The G-11, (And the GM-8) are very easy to relube, The HGM-200 takes a bit more work, but it is not much harder than the 2 previously mentioned. (Saddle Plate must be removed..4-Bolts, and then a Large Snap ring has to be removed to access the Dec Bearings) Mark

Hi Guys: Great to hear there's a Losmandy list, thanks for starting it up! Anyhow, I am about to embark on my first G-11 teardown and re-grease procedure. Do any of you veterans have advice or some good links for research before I start my adventure? Thanks, --Dave O'Toole odave@... www.concentric.net/~odave

Hi Bill, I have heard of one other person having this problem also, and they used a lube and had gotten good results, But I like your idea better. The "Stickyness" is really not great, but you seem to notice it more when using high magnification. Good Tip! Mark

Hi David, The address I left in Post #11 is a good one (By Dr. Rene Goerlich) I'd also like to add to my posts 12+13 to make sure you pack the roller bearings very well with grease. Just a light coating on the outside of these bearings is not good enough. The important thing is to take your time. (Being in a good mood also helps! :-)) Mark

Hi everyone, I obtained a G11 this spring and I've been posting my experiences on telescopes and sct egroups. I've started making some modifications with some success. I'll sit down later today and summarize my experiences on a more lengthy post. In the meantime, has anyone tried running in the RA gear with an abrasive? Instructions supplied with my old 11" Mathis gear recommended doing so, then cleaning and regreasing the gear. Talk to you later, Steve

Hello all, I have a G9 with the nylon bearings and was wondering if anyone has changed them out for the needle bearings like the GM8/G11. Is it a difficult procedure? Do I need a press to put the needle bearings in? Is there somewhere that this is already covered that you could point me to? Thanks for any advice. Matt Brown

Anybody know where I can get the Leg Levelers and Dampning pads for the G-11..Losmandy doesn't make em anymore. CS Jay

Very glad this group was started. I think not only will it help existing or potential Losmandy owners (like myself), it should probably help Losmandy see issues that are causing frustration with their products so they can work on fixing those problems. Also I'm sure this egroup well reduce the amount of support calls Losmandy gets so they can focus on making their products even better! I'm looking at getting the GM-8, and will be taking it very to the equator. I noticed that the specs say that it can go down to 0 degrees, and in a recent exchange I had with a G-9 owner confirmed that the G-9 could go down to 0, except the dec axis hit the tripod leg. However on looking at the current picture of the GM-8 I noticed that there is a slotted arc that has secondary clamping bolt for the latitude adjustment (which the G-9 didn't have) and to me it doesn't look as though that arc is long enough to allow the mount to go to 0 degrees. The scale also only goes to 10 degrees. Can any one confirm if the current GM-8s with the slot will go to 0. And if they do is the dec axis and counterweight still a problem? Has anyone used these mounts at 0 degrees and were there any problems? TIA

BTW Ian, Thanks for setting up this group! This should have been done many moons ago. Thanks much for taking the time! Mark

Hi Scott, Just to say thanks for agreeing to support this group. I see you're already participating in some of the discussions. I'm convinced that there are many owners of your fine mounts out there (such as myself!) who will benefit from your input. I'm sure you will probably find this discussion group to be a good feedback resource for yourself as well. Keep up the great work! Kind regards, Ian.

Scott, et al. After replacing the RA worm and roller bearings on my GM8 the sudden jumps in the drive have stopped, but I'm still getting in excess of 40 arcseconds of periodic error. I have made sure that there is no side-to-side play of the worm in the bearing blocks and that the worm turns smoothly with my full load on the mount. It is balanced slightly to the east so as to put a small amount of resistance on the drive and I have made sure the clutch is tightened well. What else am I missing here? How likley is it that there is enough difference in the new RA and Dec worms that swapping them could bring my PE down to 30" or less? Or should I be looking at something different entirely? BTW: This group was a great idea, thanks. Phillip

Has anyone on the list ever added a skysensor 2000 to a GM-8 / G-11 ? will it work ?

I'm very pleased to have discovered this group. I own a GM100 and a G9 mount. I use the GM100 primarily for CCD imaging with a C9.25 and a 6" refractor, and for occasional visual use with the 6" refractor. I use the G9 for visual use with a 4" refractor and occasionally with the C9.25. I also use it for astrophotography through the 4" as well as piggyback. My most recent CCD images, taken with the GM100, are at: http://members.home.com/jsterngold/lassen2000/june-astro-images/ When I last measured about a year ago, I had about 25 arc-secs PE on the GM100. Unfortunately, it's "cataclysmic" PE, i.e., there are quick movements rather than slow ones. A friend has suggested that there may dirt in the worm bearings, so I plan to break down the mount and completely clean and re-lube all bearings. I may also replace the worm bearings, because several folks on another list (SCT-Users on egroups) have done so with reportedly great success. BTW, Scott, the teflon disk that you sent me to replace the nylon ones on my G9 mount in order to reduce stiction have helped greatly. As you predicted, I now have to tighten the clutches more in order to lock down the axes, but it's definitely worth it. The stiction problem was a nightmare, even with an instrument as small as the 4" refractor, and even at low magnifications. Paul Sterngold __________________________________________________ Do You Yahoo!? Kick off your party with Yahoo! Invites. http://invites.yahoo.com/

I'd like to install encoders on my GM100. Has anyone accomplished this? If so, how? TIA. Paul Sterngold __________________________________________________ Do You Yahoo!? Kick off your party with Yahoo! Invites. http://invites.yahoo.com/

Scott, I hope that you are reading this. Have an early Celestron G11, circa 1992, Its been to your shop once to receive larger CG14 bearings. This mount, from day one, has suffered from image vibrations, I have done everything that has been suggested, no improvement at all. You can see the "heartbeat" of this mount in the image at above 200x or thereabouts. Give me an honest opinion, is there a fix for this problem, or I should sell it and get a newer one? Thanks, Vahe

Scott is right.... With my fix you cannot completely lock down the clutches, however for visual use and using the analog setting circles it works great. Also works great for sweeping up a DSO with a low power EP without using the hand paddle which will change the RA setting from the previous object acquired. I also bought the optional clutch knobs with the handles which allows me to put extra pressure on the clutch assmbly. Anyway, with a fully loaded C11 on board, it works great. BTW, I also use Losmandy's counterweight that mates to the dovetail mount on the front of the tube assembly that allows me to balance out the OTA perfectly.Also use a 6 lb counterweight as well as the supplied 21 lb. By adding these two items, I can achieve a perfect balance point in all positions. Bill

I've done the DSC installation on my G-11. I'm looking at Scott's Goto system. Will I be able to move the scope manually and maintain the alignment? The statements on Losmamdy's web page are a little confusing to me: * Use of 2 incremental encoders allows for additional manual movements. * As long as you move the telescope electrically, the accuracy of the internal step counters is maintained. * GuideTo function allows for manual movement or slewing to the selected database object. Item 2 implies that the scope must be electrically slewed, items 1 and 3 imply manual movement is OK as long as you have encoders installed. Thanks, - Steve - * * Steve Linscott Information Technology Division * * linscot@... Rice University Houston, Texas * *

Hi List, With all the talk about GoTo on the G-8 and G-11, I took a look at the Losmandy web page and found that only the G-8 and G-11 are specified for use with the GoTo system. Does anyone know if the HGM-200 will have a GoTo available? -- Gil