Hi,
I am trying to locate my NUC computer under the mount as it is a little large to add to the weight of the SCT OTA or back of the Gemini. Has anyone seen a good stand or a tray that could be put under the stand or attached to the HD mount legs?
Thanks,
Ken
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Re: Dyslexic G11T? Maybe?
On Sat, Jul 9, 2022 at 11:36 AM, Michael Herman wrote:
I'll suggest...
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1. Be sure the mount is set to G11T not G11 and that you do not have McLennan gearbox.? The G11 and Titan RA are opposite direction of rotation.? So is the McLennan gearbox vs the stock gearbox.
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2. Double check your UTC time and Latitude and longitude.
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3. If it's a Gemini-1 ...bad EPROM.? Replace it.??
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If it's a Gemini-2... it's dyslexic. Reflash the memory firmware.?
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Out of good ideas...
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Michael
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Last night, at a star party, after doing my star calibrations for pointing, I typed in M13. The mount went to M31. I thought I had messed up so I tried it again. M13 turned into M31 again. After a couple of more trials I tried M92. The hand controller read M93. The same thing happened on the next try. I tried a bunch of Messier objects starting with low numbers, but Gemini 2 would skip to M31 again and again. It was a very odd experience. I have never had that happen before. Has Anyone experience that??
As you have surmised it smells like the Gemini may be confused about where it is on the planet and/or what the date and time are. Or it is just confused and needs a reset and cold boot.? -- Chip Louie Chief Daydreamer Imagination Hardware?
? ?Astropheric Weather Forecast - South Pasadena, CA?
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Re: Dyslexic G11T? Maybe?
Maybe - also check your Gemini (HC,..) cable connections before you start again along with the battery charge on the unit. It might be worth using some of the electrical solution Brian V suggested - DeoxIT D5S-6 spray.
Were you able to test it with the web interface once you got back from the star party? Did it repeat with that interface? If so maybe Michael's (3) would be worth a try after you save your current configuration.
Good luck
Ken
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Re: Dyslexic G11T? Maybe?
I'll suggest...
1. Be sure the mount is set to G11T not G11 and that you do not have McLennan gearbox.? The G11 and Titan RA are opposite direction of rotation.? So is the McLennan gearbox vs the stock gearbox.
2. Double check your UTC time and Latitude and longitude.
3. If it's a Gemini-1 ...bad EPROM.? Replace it.??
If it's a Gemini-2... it's dyslexic. Reflash the memory firmware.?
Out of good ideas...
Michael
Last night, at a star party, after doing my star calibrations for pointing, I typed in M13. The mount went to M31. I thought I had messed up so I tried it again. M13 turned into M31 again. After a couple of more trials I tried M92. The hand controller read M93. The same thing happened on the next try. I tried a bunch of Messier objects starting with low numbers, but Gemini 2 would skip to M31 again and again. It was a very odd experience. I have never had that happen before. Has Anyone experience that??
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Last night, at a star party, after doing my star calibrations for pointing, I typed in M13. The mount went to M31. I thought I had messed up so I tried it again. M13 turned into M31 again. After a couple of more trials I tried M92. The hand controller read M93. The same thing happened on the next try. I tried a bunch of Messier objects starting with low numbers, but Gemini 2 would skip to M31 again and again. It was a very odd experience. I have never had that happen before. Has Anyone experience that??
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Snow Angel Sh2 -106: Another clear night, another Sharpless Object!
This one has been on my list for sometime, but I did not think it would work out given how small it is. Actually ridiculously small! Pixel scale is 0.35 arcsec/pixel. Seeing these results, I might just stay in Bin 1 mode with my ASI 294 MM Pro camera for all targets. Seeing conditions where not very good, so I know I lost detail for sure. I've not really found too many examples on Astrobin, so perhaps it is not a popular target.? Total integration 5.11 Hrs. Nights now getting a bit longer, huray!? 400s frames (18 O3, 14 S2 and 14 Ha). Image taken July 3rd, 2022. 12" F4 Newtonian (FL 1380mm), modified L. G11 running Onstep, ASI 294 MM Pro camera, 3nm Chroma NB filters, OAG with QHY5III178MM guidecam. Wikipedia says:? This emission nebula is created by "t wo jets of matter streaming from its poles heat surrounding matter to a temperature of around 10,000?¡ãC.Dust that is not ionized by the star's jets reflect light from the star. With an estimated surface temperature of 37,000¡ãK, it is classified as a??star. It loses around 10?6??per year in solar winds, ejecting material at around 100?km/s." Peter
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My G11 is humming these days. All my gotos for the last week have been pretty much dead center each time and tracking well (PHD2 looks good too). I have been intrigued with the comets and thought I would try PanSTARR as it is approaching its closest point to Earth - 25m kms on July 14th. Here's hoping for a longer tail then.
Attached is my stacked (to get more detail) image - not great but something different :-)
Happy Fourth on this side of the ponds - hoping for some more celestial fireworks too.
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Re: "Alt-Az is Coming to Losmandy Modular Mounts"
Hello?
If I had to guess, it will be an AZ8 mount with a motor drive, Or this new Alt Az mount will be something totally new. How cool. Being visual only myself and having owned an AZ8 for several years, the new Losmandy Alt Az mount ought to be another? awesome mount by Losmandy. We will have to wait and see what it is.
Deric?
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Re: "Alt-Az is Coming to Losmandy Modular Mounts"
Thanks for following up!?
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Re: "Alt-Az is Coming to Losmandy Modular Mounts"
Sorry guys, it got pushed to the next podcast
It is sort of secret squirrel in that it relates to new product type stuff.?
Brian
On Sat, Jul 2, 2022 at 5:01 PM Oberon510 < ken@...> wrote: On Sat, Jul 2, 2022 at 11:14 AM, Chris Klein wrote:
I was wondering we¡¯re in the new podcast they discuss the announcement ¡°Alt-Az is Coming to Losmandy Modular Mounts¡±.?
I looked also but didn't see any mention of it during the podcast broadcast. Maybe the Losmandy team will chip in on what this really meant and whether there is something coming - could be secret squirrel, need to know only, at this stage :-)
An Alt-Az is of interest to me too.
-- Brian?
Brian Valente astro portfolio? portfolio astrobin?
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Re: "Alt-Az is Coming to Losmandy Modular Mounts"
On Sat, Jul 2, 2022 at 11:14 AM, Chris Klein wrote:
I was wondering we¡¯re in the new podcast they discuss the announcement ¡°Alt-Az is Coming to Losmandy Modular Mounts¡±.?
I looked also but didn't see any mention of it during the podcast broadcast. Maybe the Losmandy team will chip in on what this really meant and whether there is something coming - could be secret squirrel, need to know only, at this stage :-) An Alt-Az is of interest to me too.
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Re: "Alt-Az is Coming to Losmandy Modular Mounts"
I was wondering we¡¯re in the new podcast they discuss the announcement ¡°Alt-Az is Coming to Losmandy Modular Mounts¡±.?
I mention I only do visual because I was being lazy not wanting to watch the whole podcast since it¡¯s mostly about AP.?
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Re: G11 Gemini 2 - RA not working
The original poster's problem was indeed a loose Oldham coupler.?
He fixed it...working nicely he said (verbally).
___^
John included a photo, but it actually illustrates some priblems.? ?So here goes:..
That photo John attached shows a very badly aligned coupler!??
Look at the white plastic part.? It is not in the same OD area as the metal part on the worm.? It might be OK for a DEC axis, but never for an RA axis.
And I think worse: there is a separation of the plastic part from the metal part on the worm.? This means the plastic part is loose.? That's bad too.?
To remedy these two problems:
? 1. You must adjust the position of the gearbox (on older "straight drive" mounts, or the vertical plate ("tucked motor" mounts) until the white plastic part simply rotates and its OD closely matches the OD of the drive and driven shafts.? ?The drive shaft is 3/16th inch diameter,? and the driven worm shaft is 1/4 inch diameter.? But their Oldham coupler end metal parts and center plastic OD are identical.??
In all views: ?the drive and driven shafts ===?? and the coupler metal ends []?? and the plastic coupler { }? should be lined up like this: ? ? ===[]{ }[]====
That's the ideal picture. In practice you can get it nearly ideal.? You may be stuck with a slight angle between the shafts because the vertical plate (tucked) or gearbox (straight) drive designs bolts the plate or gearbox firmly to the thick horizontal worm plate.? As the worm must be pivoted into mesh with the worm wheel, it can create an angle between the shafts that is not desirable.??
?Only with the original "long" OPW design can you get it perfect.? (And I think the new design planned by Peter Boreland can get it perfect too.)? Both those designs bolt the driven axle to the OPW assembly, so the angle can be made exactly zero and stay that way, minimizing PE.??
2. To compress the plastic coupler is important too:? ? a. If the worm can shift along its axis, the cover will certainly get loose when the worm shifts to the right away from.the coupler.? ?So you must assure your worm cannot get loose between its worm blocks.? You can do this by adding a small spring (either R4 Belleville or 1/4th inch ID wavy spring) only to the right side of the worm.? You don't want a spring on both ends as this will still allow the worm to shift away from the coupler and loosen the plastic coupling. ? b. Then once the worm is held along its axis firmly by the worm blocks, loosen both metal ends of the Oldham coupler.?? ? ? ? ?Slide the Oldham coupler so that its plastic center is centered over the gap between the two shafts: the drive and the driven shafts.? Then tighten down the metal ends.??
Test the drive by running the axis with its motor and look for anomalous movement.
In DEC there is no effect on PE, and you can tolerate some misalignment of the drive to driven shafts.??
In RA any misalignment or angle between the shafts provides a PE contribution at the worm period (looks like a worm problem and it isn't) and/or at worm/2 period.??
Now I'll get off the pulpit...and stop preaching.
Best to all, Michael
( Oh...if you need a few such small springs for the worm, contact me.? )
Brian,
Here is a pic of the Oldham coupler Keith mentioned (not yet aligned during this reassembly). You might see the shaft turning inside either side if a screw is loose. You should find a nicely fitting Allen head wrench, which is 1/16" here, I think. Use a straight end, not a ball end to tighten. You might also check the vertical black plate screws under the spur gear cover for tightness as well. Other than that, you might check the motor screws to see if they are both in place and snug but don't overtighten those as they are seated in plastics threads that are part of the gearbox.
John
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Losmandy G11G2 on pier; SkyShed design roll-off observatory; ZWO ASI2600MM-P; ZWO ASI071MC; Sky-Watcher Esprit 100 ED; Celestron C925 Edge HD with 0.7XFR, William Optics Zenithstar 61 APO; PHD2, Sequence Generator Pro and PixInsight user
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M45 The Pleiades to bring awareness about ALS/Lou Gehrig disease
I wanted to talk about ALS, amyotrophic lateral sclerosis, aka Lou Gehrig disease. A terrible disease.
For this I am sharing with you this picture that has been taken for Guilhem Pone Gallart (French music artist), for which he chose the target. It was then printed in 120x80cm so he can appreciate it.
Very high quality version is available here, below the message about the disease:
This image is loaded tile by tile dynamically. Depending on the quality of your connection it might tale some time to get the full resolution (all the tiles are 450MB).
Also there is a description of the target and equipment used.
Thank you for sharing it in order to bring awareness about this disease and what it is. 
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Re: G11 Gemini 2 - RA not working
Brian,
Here is a pic of the Oldham coupler Keith mentioned (not yet aligned during this reassembly). You might see the shaft turning inside either side if a screw is loose. You should find a nicely fitting Allen head wrench, which is 1/16" here, I think. Use a straight end, not a ball end to tighten. You might also check the vertical black plate screws under the spur gear cover for tightness as well. Other than that, you might check the motor screws to see if they are both in place and snug but don't overtighten those as they are seated in plastics threads that are part of the gearbox.
John
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_____________________________________________________________________________________________________________________________________________________________________________
Losmandy G11G2 on pier; SkyShed design roll-off observatory; ZWO ASI2600MM-P; ZWO ASI071MC; Sky-Watcher Esprit 100 ED; Celestron C925 Edge HD with 0.7XFR, William Optics Zenithstar 61 APO; PHD2, Sequence Generator Pro and PixInsight user
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Re: Inchworm Cluster: NGC6910 in SHO
That's a bit more interesting than my last try at that one Peter!
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Losmandy G11G2 on pier; SkyShed design roll-off observatory; ZWO ASI2600MM-P; ZWO ASI071MC; Sky-Watcher Esprit 100 ED; Celestron C925 Edge HD with 0.7XFR, William Optics Zenithstar 61 APO; PHD2, Sequence Generator Pro and PixInsight user
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Inchworm Cluster: NGC6910 in SHO
This image of NGC 6910, in the constellation Cygnus, was taken over three nights in NB. Total integration time was 13hrs. (33 O3 400s,? 55 Sii 400s,? 29 Ha 400s). 12" F3.9 Netoian, Losmandy G11 mount w/Onstep, ASI 294 MM Pro Camera, and Chroma filters. Bortle 4/5. Pixel scale: 0.7 arcsec/pixel.
Light rays from the supergiant star Sdar can be seen blending into the bottom of the image. Cropping them out would have lost too much great detail to felt. I love the cloud detail here, some beautiful small structures
Peter
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Re: "Alt-Az is Coming to Losmandy Modular Mounts"
I have an AZ8 also and am visual only. Where are you? My time zone is -5.
I don't understand your question.
BG?
toggle quoted message
Show quoted text
-------- Original message --------
From: "Chris Klein via groups.io" <chris_klein@...>
Date: 7/1/22 3:42 PM (GMT-05:00)
To: [email protected]
Subject: Re: [Losmandy_users_io] "Alt-Az is Coming to Losmandy Modular Mounts"
Can you tell me the time code where it is discussed. I have an AZ8 and I don¡¯t image so it¡¯s a lot to sit through!
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Re: "Alt-Az is Coming to Losmandy Modular Mounts"
Can you tell me the time code where it is discussed. I have an AZ8 and I don¡¯t image so it¡¯s a lot to sit through!
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Re: G11 Gemini 2 - RA not working
Hi Brian.? If you know the motor is working but the mount is not moving, then yes it sounds like the one of the sides of the Oldham coupler is loose and the set screws need to be tightened.? Remove the RA worm cover and the set screws are fully accessible to tighten.
Keith
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Chip Louie
Michael Herman
jeff marston