Re: Random Gotos during plate solving
I asked about this a few months ago, but apparently on the "wrong" Gemini group.? (Gemini_II instead of gemini_users)
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Re: Changing the servo motor encoders from 256 to 512 or 1024. Any reason not to do this?
No, it¡¯s currently only available using ?a serial command. A simple script could be used to change it.
Regards,
? ?-Paul
On Thu, Jun 24, 2021 at 12:14 AM, <pcboreland@...> wrote:
Paul,
Is this from the hand controller? I do not see this feature in the web interface or the screen based controller.
Peter
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Re: Changing the servo motor encoders from 256 to 512 or 1024. Any reason not to do this?
Hi Paul,
As Peter tried, I also could not find PECmax in any of my G-2 web pages or the Gemini.net sub panels.?
?Can you guide us to where that setting is available?
Thanks, Michael
Paul,
Is this from the hand controller? I do not see this feature in the web interface or the screen based controller.
Peter
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Re: Changing the servo motor encoders from 256 to 512 or 1024. Any reason not to do this?
I would have to completely clean off the old grease from the worm and ring before adding the new grease.
I think you should wait for a day when seeing is good enough that you don't even need to apply guide pulses to DEC, and then you can really tell if the RA axis adds noise or not.? Or use the PHD guiding assistant which will temporarily turn guiding off.
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Re: Changing the servo motor encoders from 256 to 512 or 1024. Any reason not to do this?
Paul,
Is this from the hand controller? I do not see this feature in the web interface or the screen based controller.
Peter
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Re: Changing the servo motor encoders from 256 to 512 or 1024. Any reason not to do this?
Hi Peter,
PECMax value can be set by a command to Gemini. This can even be multiples of the worm cycle. I'm sorry if you already know this, I'm not up to speed as to what you're trying to test.
Regards,
? ? ?-Paul
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On Wed, Jun 23, 2021 at 10:12 PM, <pcboreland@...> wrote:
Tonight I was able to test? if the PECmax limit? was indeed 25600 as some have suggested. As this image below shows the the counter went up to 3200 and rolled over. I run the test using a synthetic PEC file I created. The fact that PEC would not record the PEC curve correctly with the steps per worm revolution at 3200, is I think a separate issue. Using PEMProp I should be able to create a PEC curve and download it to the mount.? Keeping fingers crossed.
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Re: Changing the servo motor encoders from 256 to 512 or 1024. Any reason not to do this?
I have something exciting to report. I was successful in recording a PEC curve with 32000 steps. It seems there is a bug with Gemini II PEC recording. When I first attempted to record a curve it stopped after 6400 steps. Since uploading the dummy test file where the PECmax variable set to 32000, it now seems to work just fine. Go figure. Here is the curve I recorded. I like its fine detail.
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Re: Changing the servo motor encoders from 256 to 512 or 1024. Any reason not to do this?
Tonight I was able to test? if the PECmax limit? was indeed 25600 as some have suggested. As this image below shows the the counter went up to 3200 and rolled over. I run the test using a synthetic PEC file I created. The fact that PEC would not record the PEC curve correctly with the steps per worm revolution at 3200, is I think a separate issue. Using PEMProp I should be able to create a PEC curve and download it to the mount.? Keeping fingers crossed.
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Re: Random Gotos during plate solving
Thanks for the update Guilherme
Beautiful image! well done. I am not able to get sufficient OIII here in los angeles, so i appreciate the beautiful palette you have
On Wed, Jun 23, 2021 at 9:13 AM "Guilherme V¨ºnere < venere@...> wrote: Hello
Just to close this topic, I wanted to mention that after my initial trouble with the random GOTOs I have been using the mount with no issues for a few days now. The only difference between now and then is the change to the mount limits I was using before.?
When the problem occurred, I had set the mount limits to use the MI-250 defaults, but after the issue I changed these limits and configured them manually. After that, the mount didn't show any random gotos anymore.
Just to show that things? are working well here, this is the first image I made with the new mount:
Hope you guys enjoy it, and thanks for the help!
Guilherme
On Fri, Jun 18, 2021 at 11:00 PM Brian Valente < bvalente@...> wrote: [Edited Message Follows]
On Thu, Jun 17, 2021 at 11:38 PM, alan137 wrote:
On one hand, I'm a little bit happy to find out about a fix to this problem.
Hi Alan
EDIT: woop, my bad i got confused here that you jumped in on the OP's comments?
>>Why is Losmandy still using this wretched buggy controller that looks like it came from the late 90's?
Actually the controller is not the issue, The Gemini 2 works extremely well and in many ways far surpasses controllers of other mounts. It's a firmware issue that happens in very specific and limited circumstances, so it happens rarely. Most customers don't run into this.
We are taking this fix and some other improvements and wrapping that into a firmware release. In the meantime, assuming this is your issue, you have an immediate fix.?
i understand your frustration but hopefully now you know you have a place to ask questions and get support for your mount.? Astronomy is challenging because it involves so many interconnected pieces it's hard to know where is the problem. in my experience 90% of any solution is just knowing what is the problem.?
Brian
Brian
-- Brian?
Brian Valente portfolio
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Re: Random Gotos during plate solving
Hello
Just to close this topic, I wanted to mention that after my initial trouble with the random GOTOs I have been using the mount with no issues for a few days now. The only difference between now and then is the change to the mount limits I was using before.?
When the problem occurred, I had set the mount limits to use the MI-250 defaults, but after the issue I changed these limits and configured them manually. After that, the mount didn't show any random gotos anymore.
Just to show that things? are working well here, this is the first image I made with the new mount:
Hope you guys enjoy it, and thanks for the help!
Guilherme
On Fri, Jun 18, 2021 at 11:00 PM Brian Valente < bvalente@...> wrote: [Edited Message Follows]
On Thu, Jun 17, 2021 at 11:38 PM, alan137 wrote:
On one hand, I'm a little bit happy to find out about a fix to this problem.
Hi Alan
EDIT: woop, my bad i got confused here that you jumped in on the OP's comments?
>>Why is Losmandy still using this wretched buggy controller that looks like it came from the late 90's?
Actually the controller is not the issue, The Gemini 2 works extremely well and in many ways far surpasses controllers of other mounts. It's a firmware issue that happens in very specific and limited circumstances, so it happens rarely. Most customers don't run into this.
We are taking this fix and some other improvements and wrapping that into a firmware release. In the meantime, assuming this is your issue, you have an immediate fix.?
i understand your frustration but hopefully now you know you have a place to ask questions and get support for your mount.? Astronomy is challenging because it involves so many interconnected pieces it's hard to know where is the problem. in my experience 90% of any solution is just knowing what is the problem.?
Brian
Brian
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Re: DIY Spring Loaded Worms for the G11
Ouch, that hurts. Think I'll stick with aluminum, at least I can recycle my mistakes??
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Hi David
I do not know why there is a delay. Tanya handles orders.?
I suggest you write to her with a complete list of what you want to order, and include your complete shipping address
her email is tanyak at losmandy dot com
The best solution is to order and check out from our?website, which will include the shipping (shipping will be high amount). then send that email to tanya and request a lower shipping rate.
You are able to cancel or keep the order, it is good either way
Hola David
No s¨¦ por qu¨¦ hay un retraso. Tanya maneja los pedidos.
Le sugiero que le escriba con una lista completa de lo que desea pedir e incluya su direcci¨®n de env¨ªo completa.
su correo electr¨®nico es tanyak en losmandy punto com
La mejor soluci¨®n es hacer un pedido y pagar desde nuestro sitio web, que incluir¨¢ el env¨ªo (el env¨ªo ser¨¢ una cantidad alta). luego env¨ªe ese correo electr¨®nico a tanya y solicite una tarifa de env¨ªo m¨¢s baja.
Puede cancelar o mantener el pedido, es bueno de cualquier manera
Brian
On Tue, Jun 22, 2021 at 9:39 AM Davidspain via <algayaterro80= [email protected]> wrote: Hola Brian Valente! Todavia no he recibido un respuesta sobre lo que costaria el envio a Espa?a de una g11t, es normal la demora en la respuesta??
Saludos!!
-- Brian?
Brian Valente portfolio
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Hola Brian Valente! Todavia no he recibido un respuesta sobre lo que costaria el envio a Espa?a de una g11t, es normal la demora en la respuesta??
Saludos!!
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I may have fixed it. I looked at the RA limits and I had something like 151 degrees on the east side and 65 degrees on the west side. When I originally set the limits they were about 108 and 108 degrees, east and west. ?I reset the limits to 95 and 95. When the mount slewed to various targets it wasn¡¯t putting the eyepiece right next to the tripod. It looks like I need to check my RA limits at the beginning of each session.
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Re: DIY Spring Loaded Worms for the G11
Thanks for your suggestions, Edward.? Any idea what the glass
transition temperature might be?? From your comments, I suspect
somewhere around the same as PETG, maybe 85c or so?? My google
searches turn up results for regular PLA.
My initial fitment test prints were done with PLA at 10% infill,
and while I did notice the 100% PETG resulted in the screws being
slightly snug against the holes, it still appears to locate the
worm shaft well.? There is a small amount of free space in the
pocket (.5 mm) where the worm mounting plate sits, so that
dimension is not critical.? We really only need to center the big
pulley shaft (actually just off-center) between the two mounting
holes.? So if the distance between holes shrinks ever so slightly,
the shaft should still be more or less centered.? Please let me
know if my thinking is flawed here.
If I find myself re-printing the brackets again, I'll give 50%
infill a try.? If it doesn't seem sufficient, perhaps I'll simply
beef up the bracket design.? At the very least, 50% infill would
be a better use of material, gram for gram.? I really don't know
how much rigidity is required here for tracking accuracy.? The
actual delivered torque on a well balanced scope is probably quite
low.
Thanks again for your comments,
-Tony
On 6/21/2021 3:58 PM, Edward Plumer
wrote:
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As another 3D printer enthusiast, I will chime in with my 2 cents.
Nice design you have which can print as shown with no overhangs.
Rather than tinkering with slicer settings to deal with shrinkage
in holes, I have just taken to pressing them out by 0.1mm to 0.2mm
in the original design where fit is critical.
Another strong filament option I use on my gear is
"high-temperature PLA". I specifically have been using Veracity
ProPLA from Filastruder. Prints like PLA but at a higher temp 230C
/ 60C, and tolerates exposure to sun and hot car as well as PETG.?
Personally, I would avoid 100% infill. You get good strength with
50% infill or less and 4 or 5 layers on the base and walls.
Dimensional consistency I have found to be better with partial
infill.
--
Edward
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Re: DIY Spring Loaded Worms for the G11
SO I think (and this just my opinion/experience) when I printed the modified rockmover design with PETG, it did not appear to warp.
It might because the thickness of the walls. But when I used PETG to print thinner case walls for my electronics after a period of
time they did warp unless it was held together by a cover. It might be the moisture/heat that causes it to wrap. I have not tried ASA for cases yet
but mainly thick designs.?
I am just a novice at this :-)?
Thanks Brent
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Re: DIY Spring Loaded Worms for the G11
As another 3D printer enthusiast, I will chime in with my 2 cents. Nice design you have which can print as shown with no overhangs. Rather than tinkering with slicer settings to deal with shrinkage in holes, I have just taken to pressing them out by 0.1mm to 0.2mm in the original design where fit is critical.
Another strong filament option I use on my gear is "high-temperature PLA". I specifically have been using Veracity ProPLA from Filastruder. Prints like PLA but at a higher temp 230C / 60C, and tolerates exposure to sun and hot car as well as PETG.? Personally, I would avoid 100% infill. You get good strength with 50% infill or less and 4 or 5 layers on the base and walls. Dimensional consistency I have found to be better with partial infill.
--
Edward
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Re: DIY Spring Loaded Worms for the G11
Thanks for the info.?? I guess I'll stick with PETG for now.?
Previous PLA+ brackets did start to warp in the sun, but hopefully
PETG will stay solid.
Yes, I did print the orientation you describe, so that the
largest flat surface is against the print bed.? The only
unsupported overhang is the 1mm bearing spacer lip.?? I got some
stringing there, but easily cleaned them up with stepper drill bit
and dremel when I sized for the bearings.? I had to do similar
touching up with other brackets as well, as I'm sure you have.
Always happy to tinker and share.? I hope the brackets work out
well for both of us.? Good luck with it.
Thanks,
-Tony
Yes, that was the
On 6/21/2021 3:25 PM, bjaffa Jaffa
wrote:
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Tony,
I actually like PETG better. It seems to me a harder plastic and
more rigid. But all I have right now is ASA.
I am not an expert on 3d printing but I have not seen shrinkage
with ASA.
My printer is open bed also. But I have it in a enclosed room and
use a space heater to raise the temperature.?
I have a large 3 sided box around the printer to try to prevent
drafts. As such I have seen no issues with ASA.
I printed your DIY spring loaded components in ASA with no issues.
How was your print orientation? Was it as shown in the STL file
with the worm side up and the gear side down on the base?
Thanks again I will let you know how it goes. I really appreciate
your work.
Brent
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Paul Kanevsky
Michael Herman
Davidspain
jeff marston
Edward Plumer