I uploaded a new version of the spreadsheet "Edward-Gemini-NINA.xlsx"
This includes suggestion to enable "Report Pier Side" and "Flip using Goto" per a recent thread on the Gemini group.

--
Edward

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Many thanks to all!

Given all the potential issues, I'm in contact with Michael Herman - thanks for the suggestion, John.

Will update when we're all done - and operational!

Thanks!

Dale

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On Thu, Feb 15, 2024 at 06:17 PM, DaleN wrote:

My club has recently obtained a maybe 2010 era? G11 with Gemini-1 controller, untucked servos, OPW, and pretty gummed up bearings and axis shafts.

We debugged the Gemini a bit and got it booted, tested the servos (good), and took apart both axis, using the Losmandy lube kit to remove really old hardened grease and free the bearings. Regreased with the Losmandy supplied grease. Clutch pads are a bit worn (some grooving).?

The needle bearings were frozen, but eventually came free-ish.?

Minimally, we should replace the clutch pads, and install new bearings. Haven't even started looking at the OPW.

Any suggestions for further tweaks/upgrades/adjustments to make? SLW upgrade, bearings? Pitfalls?

Thanks in advance!

?Dale Nelson

Dale,

Sounds like your mount needs a trip to Micheal Herman in CA. If the mount was that gummed up, the running on frozen bearings probably led to flat spots or gouged thrust bearing washers. Personally, I would replace all the bearings with new ones, including the internal needle bearings - not just do a relube. You may need new gearboxes as well as these plastic geared parts could be worn out. Michael has replacement non-slip clutch pads which you will are a resistant to slippage. I refurbed a 1996 mount myself which I now use successfully for AP purposes. Please let me know if you need further info.



John
?

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Losmandy G11G2 on pier; refurbed Losmandy G11 with OnStep controller; SkyShed design roll-off observatory; ZWO ASI2600MM-P; ZWO ASI071MC; Sky-Watcher Esprit 100 ED with field flattener; Celestron C925 Edge HD with 0.7XFR, William Optics Zenithstar 61 APO; PHD2, Sequence Generator Pro and PixInsight user

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Thanks Derek. I've replied separately to you.

Thanks for the GFT and MA adapter testing offer - I have a Losmandy LW tripod from my GM811G for testing currently.

Dale

Dale.. Check your Junk mail folder, as I’ve replied to you a couple times.. If you’ve answered, I may not get it for awhile as I am streaming Sharks Hockey..

Additionally, if you want to borrow my Meade GFT and MA Adapter to test your mount, that could be arranged..

Derek

?

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From: [email protected] [mailto:[email protected]] On Behalf Of Jim Waters
Sent: Thursday, February 15, 2024 5:46 PM
To: [email protected]
Subject: Re: [Losmandy_users_io] Mature G11 repair

?

Have you tested, actually used the mount yet?

Tracking
Goto
...etc

------------------------
Jim W
Phoenix, AZ. USA

Losmandy G11G w/ L6, NINA 3.0 / ASTAP, ASI2600MC Pro, Sky-Watcher Scopes, Canon L Lenses.

?

Virus-free.

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In our initial testing, we only bench tested the mount standalone, after doing some temporary repairs on the Gemini-1. We took the RA and Dec axis apart to clean and re-grease before anything else, as they were frozen and could not be moved by hand. The servos now move both the RA and Dec axis.? There is still some un-binding/gunk-work to do.

We have no saddle nor pier/tripod yet, so real world testing is yet to come.

Dale

Have you tested, actually used the mount yet?

Tracking
Goto
...etc

------------------------
Jim W
Phoenix, AZ. USA

Losmandy G11G w/ L6, NINA 3.0 / ASTAP, ASI2600MC Pro, Sky-Watcher Scopes, Canon L Lenses.

My club has recently obtained a maybe 2010 era? G11 with Gemini-1 controller, untucked servos, OPW, and pretty gummed up bearings and axis shafts.

We debugged the Gemini a bit and got it booted, tested the servos (good), and took apart both axis, using the Losmandy lube kit to remove really old hardened grease and free the bearings. Regreased with the Losmandy supplied grease. Clutch pads are a bit worn (some grooving).?

The needle bearings were frozen, but eventually came free-ish.?

Minimally, we should replace the clutch pads, and install new bearings. Haven't even started looking at the OPW.

Any suggestions for further tweaks/upgrades/adjustments to make? SLW upgrade, bearings? Pitfalls?

Thanks in advance!

?Dale Nelson

I have a somewhat similar M10 that I use for planetary, lunar and solar imaging. I did try it once or twice for dso when I had a woefully inadequate rig. I shot the omega centauri cluster with the celestron 0.63x reducer and a dslr camera riding an older, 492 driven gm8 and was satisfied with the results, but that required short exposures to counteract the large PE the mount had (before I learned to tune it).

After that I started hoarding astro stuff so I could learn to crawl before I could run lol. In any case, if you have astrobin you can search their site for C11 images and judge for yourself but, I see no real reason why this would be unattainable.

you also have the option to go hyperstar ;)?

There is a lot of conflicting advice - such as a good image can't come from this scope because of being seeing limited.? I bought it years ago for visual use, so its costing me nothing (but the flattener and some adaptors) to try it.? ?I figured someone here must be imaging with a C11 and could share some results.?

Brian

Hi Brian,

That's a pretty specific equipment combination, but perhaps you'll get a response. The G11 should be able to handle a C11 as far as payload. With my C925 I have gotten PHD2 guiding in the 0.6 error range but have gotten down to 0.4 in excellent seeing. I can't speak as to how an ASIAir would be better or worse since my preference is for PC controlled imaging. The Duo should give you nice guiding as long as you can find a guide star, and I've heard some mixed reviews with NB filters. I typically use the PPEC algorithm for RA guiding but not sure how that works in the ZWO environment. As long as you balance well and do your guiding calibrations, you should be OK to go.

John
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_____________________________________________________________________________________________________________________________________________________________________________

Losmandy G11G2 on pier; refurbed Losmandy G11 with OnStep controller; SkyShed design roll-off observatory; ZWO ASI2600MM-P; ZWO ASI071MC; Sky-Watcher Esprit 100 ED with field flattener; Celestron C925 Edge HD with 0.7XFR, William Optics Zenithstar 61 APO; PHD2, Sequence Generator Pro and PixInsight user

In another recent thread, it was mentioned that there is a beta test L6 firmware update and PEC software in testing now.??


So hopefully sometime thus year we will get a release.?



Brian

What happened to the new version of Pempro equivalent that was going to be released?

Fyi...it's a 2023 G11G 9n L6.? I run an Asi Air for session management, and a 2600 duo gor imaging and guiding (equivalent to an OAG)?

I'm looking to mount up my C11 with the 0.7 reducer and take some images of galaxies.? ?The image scale is about 0.4 arc-s/px, and my normal guiding with my 80mm refractor is 0.6-0.9, so I'll clearly be oversampled.? I figure I can Bin 2 to get my image scale about the same as seeing/guiding.? And folks on CN have seemed to have decent results doing this and adding in a deconvolution/sharpening step to the post processing.?

So losmandy users, how much luck have you had with C11?? Example images you can n share??

With galaxybseason nearing I'm keep to see what I can get.? But afraid maybe it's just not going to work out.?

Brian

On Thu, Feb 8, 2024 at 09:41 PM, Derek C Breit wrote:

Stellarvue 130mm Raptor

Hi Derek,

Just saw your post. So sorry to hear your need to sell your gear. I hope you still be enjoying astronomy going forward. Cloudy Nights Classifieds has been a great place for me to sell gear I no longer wanted. There are no selling fees like Ebay or other auction places. You could always post an ad in your local astronomy club newsletters if you want somebody local to pick it up directly.?

All the best/good luck!

John?
?
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_____________________________________________________________________________________________________________________________________________________________________________

Losmandy G11G2 on pier; refurbed Losmandy G11 with OnStep controller; SkyShed design roll-off observatory; ZWO ASI2600MM-P; ZWO ASI071MC; Sky-Watcher Esprit 100 ED with field flattener; Celestron C925 Edge HD with 0.7XFR, William Optics Zenithstar 61 APO; PHD2, Sequence Generator Pro and PixInsight user

Thanks @David for the warm welcome in this forum ;).

Anyone else might find this piece of information useful which I received in the meantime directly from the Losmandy support:

"We are no longer going to have the spring loaded worm on the RA Axis. The G11T RA axis is a different mechanism and we have found it is not needed."

Cheers,

Georg

Paul,
? Thanks,

Dave