Date   

BETA TEST INPUTS ARE NEEDED

Wes Mcdonald
 

Folks:

If you have subscribed to the beta test project for the new firmware and associated ASCOM driver update to the PMC8, please get your comments into the BetaTest subgroup as soon as possible.  The public beta period ends April 1, and we need your findings relative to software issues or documentation needs so that these may be addressed prior to general release.  So please help us out by entering those findings you may have.

Regards,
Wes.

--
Wes, Southport NC
EXos2-GT PMC-8, iExos 100
ES ED 127, 10" LX200GPS+wedge, Astro-Tech 8" Newt, ETX-90, 60mm no-name guide scope ~ 260mm FL
Polemaster, Orion ST-80 and SAG, ZWO 290MM, D5300 astro modified
Nina, Bootcamped Mac Mini control computer, RDP to iMAC
110 amp hour lead acid deep discharge battery for field power
Electrical Engineer, Retired


Re: DEC axis not moving in certain position. Belt slipping. #EXOS2

Sebastian
 

Nice, I found out the factory used  inch and metric Allen screws for the dec motorbox 😕


Re: DEC axis not moving in certain position. Belt slipping. #EXOS2

Peter Danek
 

Thank you, guys. I understand what you are saying but there was no conventional way of adjusting and fixing my issue. After tinkering with it all day I finally found a fix and now it's working with no issues. 

--
Mounts: ES EXOS-2 PMC-Eight, SW AZ GOTO
Scopes: SW 200P, SW 130P
Cameras:  Canon T3i, Canon XS, SV305 Pro - IMX290


AmazonFire tablet #ExploreStars

Sebastian
 

I tried to download the App from Amazon. There seems to be a geoblock for Germany. I had installed the app one year ago and it worked. What has happened? 


Re: DEC axis not moving in certain position. Belt slipping. #EXOS2

Wes Mcdonald
 

Peter:

When the motor stalls, the belt does not slip as Bob mentioned.  Instead the motor simply does not move but it makes a huge racket, like a coffee grinder.  I haven't seen the movie.  How does it sound?  

If you are binding, then you just have to loosen the mesh.  And live with the consequences.  Use Bob's paper to set it up as well as it can be.  Dec backlash is just a fact of life with these mounts.
Wes.


--
Wes, Southport NC
EXos2-GT PMC-8, iExos 100
ES ED 127, 10" LX200GPS+wedge, Astro-Tech 8" Newt, ETX-90, 60mm no-name guide scope ~ 260mm FL
Polemaster, Orion ST-80 and SAG, ZWO 290MM, D5300 astro modified
Nina, Bootcamped Mac Mini control computer, RDP to iMAC
110 amp hour lead acid deep discharge battery for field power
Electrical Engineer, Retired


Re: Exos2 GT not responding via serial #ConfigManager #EXOS2 #pmc-eight

Michael
 

Hi Gents,

thanks for the quick responses.
first things first, it works again. I dont know why, but at least the connection is on again and i can control my mount again.

to your questions: Yes I reprogrammed the FTDI cable and it was working until 2 daYs ago. I did that several times today again, also with different cabels without any changes. Out of any reason at some point the error messages were gone and the mount slewed like ever before 🤷🏻😀.
i am using Ascom 6.5 SP1

thanks for your replys and i hope i get more active here in the future.

best regards
Michael


Re: Exos2 GT not responding via serial #ConfigManager #EXOS2 #pmc-eight

m4ttnova .
 

A couple of questions did you reprogramme your ftdi cable. Another thing you could try is resetting the pmc8 unit. I too use stellarmate and I spent about 2 hours the other night to get it working again


On Sat, 20 Mar 2021, 17:34 Sebastian, <jakob.sebastian@...> wrote:

Which Ascom driver do you use (6.5 SP1)?
Did you check the com port in the Win device manager ? 
there’s is also an issue with some Win updates/builds. check this info at the top of the Page 

https://explorescientificusa.com/pages/software-and-downloads-for-pmc-eight-system


Re: Exos2 GT not responding via serial #ConfigManager #EXOS2 #pmc-eight

Sebastian
 

Which Ascom driver do you use (6.5 SP1)?
Did you check the com port in the Win device manager ? 
there’s is also an issue with some Win updates/builds. check this info at the top of the Page 

https://explorescientificusa.com/pages/software-and-downloads-for-pmc-eight-system


Re: DEC axis not moving in certain position. Belt slipping. #EXOS2

 

Peter,
 
Yes, I saw the video before I responded.  Really couldn't figure out what you were trying to illustrate.  There's a small amount of shifting back and forth by the large pulley, but that could just be the worm pushing on an obstruction and then easing back from it as you release the clutch. Note that the belt is moving along with the large pulley.  
 
Unless badly under-tensioned, the belt cannot slip. It is toothed, as are the pulleys, and it does not stretch.  Now, we have seen the odd pulley with loose setscrews, but in those cases, it is a pulley slipping on a shaft (not the belt) and the behavior would be different than what you show in your video.   
 
When you engage the clutch, a small 'brake shoe' presses on the side of the ring gear, and that friction engages the outer shell of a given axis and transmits movement from the ring.  With the clutch disengaged, the outer shell is free to rotate, independent of the ring gear (which still remains engaged with the worm).  So a scenario where the motor drives the worm into an obstruction, and then you see a bit of bounce-back when you release the clutch, wouldn't surprise me.  

- Bob
 
--
Mounts: ES PMC-8 EXOS2, Serial
Scopes: SW 130P-DS, SV 102EDT, ZWO 60/280 Guide
Cameras:  Nikon D5300, Altair GPCAM2 290M
Software: ASCOM 6.3, CdC, AstroTortilla, BYN Pro, Sharpcap, PHD2
Computer:  Thinkpad x230, Win7Pro/64


Exos2 GT not responding via serial #ConfigManager #EXOS2 #pmc-eight

Michael
 

Good day Everyone,

I am reading in this forum already a long time, as I own an Exos 2GT PMC8 since 1 year.
I recently started using the telescope via Kstars/Ekos on a Raspberry Pi4 (Stellarmate OS), which worked fine until yesterday.
Since yesterday EKOS does not connect to the Mount anymore. I already tried on Windows via ASCOM and also different Serial/USB cables without any change.

If I start ASCOM diagnostics tool and select the EXOS2GT, the following output appears:

Create              Creating device
Connected           Connecting to device
Error               System.Runtime.InteropServices.COMException (0x80040402): Timed out waiting for received data
   bei ASCOM.Utilities.Serial.ReceiveTerminated(String Terminator) in C:\ASCOM Build\Export\ASCOM.Utilities\ASCOM.Utilities\Serial.vb:Zeile 1204.
   bei ASCOM.ES_PMC8.Telescope.CommandString(String Command, Boolean Raw)
   bei ASCOM.ES_PMC8.Telescope.GetRAMotorPosition()
   bei ASCOM.ES_PMC8.Telescope.set_Connected(Boolean value)
   bei CallSite.Target(Closure , CallSite , Object , Boolean )
   bei System.Dynamic.UpdateDelegates.UpdateAndExecute2[T0,T1,TRet](CallSite site, T0 arg0, T1 arg1)
   bei ASCOM.DriverConnect.ConnectForm.btnConnect_Click(Object sender, EventArgs e) in C:\ASCOM Build\Export\ASCOM.DriverConnect\ConnectForm.cs:Zeile 268.
Dispose             Disposing of device
Dispose             Completed disposal
ReleaseComObject    Releasing COM instance
GC Collect          Starting garbage collection
GC Collect          Completed garbage collection


so as far as I understand, there is something wrong with the RA output.
Any advise would be much appreciated.

BTW: I tried via WIFI Explore Stars on my iPad yesterday and it seems to work. I also tried to flash the firmware via the PMC8 configuration tool, but without success. The error message there is: No Propeller chip found on any serial port.

Thank you very much

Michael


Re: DEC axis not moving in certain position. Belt slipping. #EXOS2

Peter Danek
 

1. picture: the mesh is too-tight, belt slipping, the worm is not moving


2. picture: the mesh is too loose, a huge backlash

--
Mounts: ES EXOS-2 PMC-Eight, SW AZ GOTO
Scopes: SW 200P, SW 130P
Cameras:  Canon T3i, Canon XS, SV305 Pro - IMX290


Re: DEC axis not moving in certain position. Belt slipping. #EXOS2

Peter Danek
 

Hi Bob,

have you seen my video? I will try to do another one to explain it more. I have seen your document before I posted this and I exactly know where the problem is. The mesh is too tight and the worm is not moving when it is near the clutch. If the worm is in the opposite position down from the clutch it is loose. When I lock the clutch the cylinder with the mesh inside moves up pushing on the worm(see the video).

It doesn't seem right to me. There should be no pressure after locking the clutch. 
--
Mounts: ES EXOS-2 PMC-Eight, SW AZ GOTO
Scopes: SW 200P, SW 130P
Cameras:  Canon T3i, Canon XS, SV305 Pro - IMX290


Re: DEC axis not moving in certain position. Belt slipping. #EXOS2

 

Peter,
 
Sorry, but I don't understand your problem statement.  Are you saying that the DEC axis is binding in a certain position?  Clutches should always be on, if the mount is under power.  
 
If that's all it is, and your scope is reasonably balanced, then all you likely need is a bit of an adjustment.  There are not a lot of moving parts in these mounts, and it is not unusual for some owner adjustments to be needed from time to time. 
 
If the motor is running, the set screws on the two pulleys are snug, and the belt is reasonably tensioned, then the worm gear will be driven by the large pulley.  If the worm is not moving, then the most likely thing holding it back is a too-tight mesh (binding) between the worm gear and the ring gear that surrounds your axis.  This can happen, because the clearance between the two gears is fixed, but the two gears are not (and cannot be) perfectly round.  So the goal of adjustment is to achieve the smallest amount of clearance that still avoids binding on high points between them. 

I don't know what an ES pre-delivery test of the mount would entail, but if bind points occur, they will be at particular locations and there's no predicting whether a short test would actually traverse a given bind point and reveal such a problem.  In any case, if all that's needed is a gear mesh adjustment, that's pretty straightforward.
 
If I've understood your problem correctly, then the doc in the link below may help you, with this and perhaps other things as well.

https://espmc-eight.groups.io/g/MAIN/files/User%20Contributions/EXOS2PMC8_TuningNotes_v2.pdf

Hope this helps...

- Bob

--
Mounts: ES PMC-8 EXOS2, Serial
Scopes: SW 130P-DS, SV 102EDT, ZWO 60/280 Guide
Cameras:  Nikon D5300, Altair GPCAM2 290M
Software: ASCOM 6.3, CdC, AstroTortilla, BYN Pro, Sharpcap, PHD2
Computer:  Thinkpad x230, Win7Pro/64


Re: #ExploreStars #Android #ExploreStars #Android

Pete@torrington
 

Having the same issue on Samsung TAB A (2016) model SM T585
which runs Android 8.1.0 (Oreo).
Last and latest system update 20-11-30.

I was happily using the app 6 or 7 weeks ago (early Feb.).
Got the scope out 21-3-15 and a "...has stopped" message popped up when I selected M42.
Further investigation showed only Solar System objects can be selected successfully.
Painstaking deinstallation and reinstallation of app ad DB makes no difference.

I await news that this issue has been addressed and solved.
Peter


Re: Astrophotography Done with the iEXOS-100, EXOS 2, and G11 Post your Pictures and Details! Lets Show What These Mounts Can Do. #G11 #astrophotography #iEXOS-100 #EXOS2

Dave Cherry
 

Yes 😊 I did Walter, thanks for correcting.

 

Dave

 

 

Sent from Mail for Windows 10

 

From: Walter Vinci
Sent: Saturday, March 20, 2021 2:28 PM
To: MAIN@espmc-eight.groups.io
Subject: Re: [ESPMC-Eight] Astrophotography Done with the iEXOS-100, EXOS 2, and G11 Post your Pictures and Details! Lets Show What These Mounts Can Do.

 

Hi Dave,

 

Do you mean the Optolong L-extreme?

 

Walter



On Mar 20, 2021, at 6:45 AM, Dave Cherry <andromedacity@...> wrote:



I used the new lXstream filter for all except the spider Nebular where I just used a UV blocking filter.

That lXtream was a great investment for my bortle 5 skys , yes you do get some halo action on bright stars , but I don’t mind that too much.

Will be packing away the 73ED and  loading up the Newt on the PMC today.

 

Cheers

Dave C

 

 

 

Sent from Mail for Windows 10

 

From: Derrell Oliver
Sent: Friday, March 19, 2021 12:21 AM
To: MAIN@ESPMC-Eight.groups.io
Subject: Re: [ESPMC-Eight] Astrophotography Done with the iEXOS-100, EXOS 2, and G11 Post your Pictures and Details! Lets Show What These Mounts Can Do.

 

Nice Pictures Paul and Dave !!!
What filters if any did you use on these shots ?

--
Derrell Oliver

ES iEXOS-100 PMC-Eight with ES Heavy Duty ST3 tripod & Azimuth Adjuster
ES USB Power Bank
Astro-Tech AT80ED.
Astro-Tech 0.8 Field Flattener/Reducer.
Meade Infinity ST80 with Lunt Solar dual speed crayford focuser.
Meade Polaris 90 with GSO dual speed crayford focuser.
Meade Polaris 130 with ScopeStuff 1.25 crayford focuser.
ZWO ASI120mc-s, Canon XSi 450d.
ZWO ASI120mm-mini & ZWO 30mm f/4 Mini Guide Scope
EQ2 Mount with Orion EQ-2M RA Drive.
AZ3 Alt-Azimuth Mount.

 

Virus-free. www.avg.com

 

 


--
Scopes: Sky Watcher 200PDS, Skywatcher 72ED
Mount: Explore Scientific PMC8 EXO2
Cameras: ASI 294MCPRO Coooled, Altair guide cam + 50mm scope
Software: Sharpcap Pro ,PH2, Stelarium Startools

<50F6CD62E89249F998BE85BBB89BC934.png>


--
———

Walter Vinci

ES EXOS2-GT PMC-Eight
ES ED80
Starfield 0.8 Field Flattener/Reducer.
ZWO ASI290mm-mini & Orion 50mm Guide Scope
Canon EOS Rebel SL1
SharpCap, APT, PHD2, SiriL, Stellarium

 


--
Scopes: Sky Watcher 200PDS, Skywatcher 72ED
Mount: Explore Scientific PMC8 EXO2
Cameras: ASI 294MCPRO Coooled, Altair guide cam + 50mm scope
Software: Sharpcap Pro ,PH2, Stelarium Startools


Re: Astrophotography Done with the iEXOS-100, EXOS 2, and G11 Post your Pictures and Details! Lets Show What These Mounts Can Do. #G11 #astrophotography #iEXOS-100 #EXOS2

Walter Vinci
 

Hi Dave,

Do you mean the Optolong L-extreme?

Walter

On Mar 20, 2021, at 6:45 AM, Dave Cherry <andromedacity@...> wrote:



I used the new lXstream filter for all except the spider Nebular where I just used a UV blocking filter.

That lXtream was a great investment for my bortle 5 skys , yes you do get some halo action on bright stars , but I don’t mind that too much.

Will be packing away the 73ED and  loading up the Newt on the PMC today.

 

Cheers

Dave C

 

 

 

Sent from Mail for Windows 10

 

From: Derrell Oliver
Sent: Friday, March 19, 2021 12:21 AM
To: MAIN@ESPMC-Eight.groups.io
Subject: Re: [ESPMC-Eight] Astrophotography Done with the iEXOS-100, EXOS 2, and G11 Post your Pictures and Details! Lets Show What These Mounts Can Do.

 

Nice Pictures Paul and Dave !!!
What filters if any did you use on these shots ?

--
Derrell Oliver

ES iEXOS-100 PMC-Eight with ES Heavy Duty ST3 tripod & Azimuth Adjuster
ES USB Power Bank
Astro-Tech AT80ED.
Astro-Tech 0.8 Field Flattener/Reducer.
Meade Infinity ST80 with Lunt Solar dual speed crayford focuser.
Meade Polaris 90 with GSO dual speed crayford focuser.
Meade Polaris 130 with ScopeStuff 1.25 crayford focuser.
ZWO ASI120mc-s, Canon XSi 450d.
ZWO ASI120mm-mini & ZWO 30mm f/4 Mini Guide Scope
EQ2 Mount with Orion EQ-2M RA Drive.
AZ3 Alt-Azimuth Mount.

 

Virus-free. www.avg.com

 

 


--
Scopes: Sky Watcher 200PDS, Skywatcher 72ED
Mount: Explore Scientific PMC8 EXO2
Cameras: ASI 294MCPRO Coooled, Altair guide cam + 50mm scope
Software: Sharpcap Pro ,PH2, Stelarium Startools
<50F6CD62E89249F998BE85BBB89BC934.png>

--
———

Walter Vinci

ES EXOS2-GT PMC-Eight
ES ED80
Starfield 0.8 Field Flattener/Reducer.
ZWO ASI290mm-mini & Orion 50mm Guide Scope
Canon EOS Rebel SL1
SharpCap, APT, PHD2, SiriL, Stellarium


Re: Astrophotography Done with the iEXOS-100, EXOS 2, and G11 Post your Pictures and Details! Lets Show What These Mounts Can Do. #G11 #astrophotography #iEXOS-100 #EXOS2

Dave Cherry
 

I used the new lXstream filter for all except the spider Nebular where I just used a UV blocking filter.

That lXtream was a great investment for my bortle 5 skys , yes you do get some halo action on bright stars , but I don’t mind that too much.

Will be packing away the 73ED and  loading up the Newt on the PMC today.

 

Cheers

Dave C

 

 

 

Sent from Mail for Windows 10

 

From: Derrell Oliver
Sent: Friday, March 19, 2021 12:21 AM
To: MAIN@ESPMC-Eight.groups.io
Subject: Re: [ESPMC-Eight] Astrophotography Done with the iEXOS-100, EXOS 2, and G11 Post your Pictures and Details! Lets Show What These Mounts Can Do.

 

Nice Pictures Paul and Dave !!!
What filters if any did you use on these shots ?

--
Derrell Oliver

ES iEXOS-100 PMC-Eight with ES Heavy Duty ST3 tripod & Azimuth Adjuster
ES USB Power Bank
Astro-Tech AT80ED.
Astro-Tech 0.8 Field Flattener/Reducer.
Meade Infinity ST80 with Lunt Solar dual speed crayford focuser.
Meade Polaris 90 with GSO dual speed crayford focuser.
Meade Polaris 130 with ScopeStuff 1.25 crayford focuser.
ZWO ASI120mc-s, Canon XSi 450d.
ZWO ASI120mm-mini & ZWO 30mm f/4 Mini Guide Scope
EQ2 Mount with Orion EQ-2M RA Drive.
AZ3 Alt-Azimuth Mount.

 

Virus-free. www.avg.com

 

 


--
Scopes: Sky Watcher 200PDS, Skywatcher 72ED
Mount: Explore Scientific PMC8 EXO2
Cameras: ASI 294MCPRO Coooled, Altair guide cam + 50mm scope
Software: Sharpcap Pro ,PH2, Stelarium Startools


Re: DEC axis not moving in certain position. Belt slipping. #EXOS2

Peter Danek
 

Here is a video of what I mean, the worm moves when I lock DEC.

Video in the attachment.
--
Mounts: ES EXOS-2 PMC-Eight, SW AZ GOTO
Scopes: SW 200P, SW 130P
Cameras:  Canon T3i, Canon XS, SV305 Pro - IMX290


DEC axis not moving in certain position. Belt slipping. #EXOS2

Peter Danek
 

Update to: https://espmc-eight.groups.io/g/MAIN/topic/exos2_working_few_seconds/80714857?p=,,,20,0,0,0::recentpostdate%2Fsticky,,,20,2,0,80714857

Thank you ES Germany for solving my RMA claim. I have received a new PMC 8 unit and it is working as expected. But, I never had such bad luck as I have now.

Because I can now control the mount I found a big problem with the DEC. When slewing and the worm/motor is near the locking clutch, the DEC stops to move and the belt is slipping. I noticed that when the worm/motor is near the clutch, and I lock/unlock DEC, the big wheel of the worm is moving. It is also impossible to move the wheel of the worm near the locking clutch when DEC is locked. However, I can move it if it is the opposite of the locking clutch.

It seems like when I lock the DEC the inside parts move. 

I can make a video of the problem if it is not clear to understand.

Is it something I can adjust or I'm looking at another RMA process? :(
--
Mounts: ES EXOS-2 PMC-Eight, SW AZ GOTO
Scopes: SW 200P, SW 130P
Cameras:  Canon T3i, Canon XS, SV305 Pro - IMX290


Re: Astrophotography Done with the iEXOS-100, EXOS 2, and G11 Post your Pictures and Details! Lets Show What These Mounts Can Do. #G11 #astrophotography #iEXOS-100 #EXOS2

Dino Monaco
 

Very nice looking Whirlpool.
Congrats.

Dino


On Mar 19, 2021, at 5:03 PM, Harry via groups.io <flykai1@...> wrote:

Paul, great photo 👍👍
--
Harry
Vero Beach, FL

Mounts: ES iExos 100-PMC Eight
Scopes: ES  ED80CF, ES AR102,  Meade ETX 90 EC (Deforked)
Guide: ZWO 30mm Mini, ZWO ASI120MM-Mini
Software: ASIair Pro, iPad Pro, MacOS, Affinity Photo, SkySafari Plus
Cameras: Nikon D600, D5500 (UV/IR Mod)
Misc: ES USB Power Bank

Filters:  Optolong L-Pro, L-eNhance






--
Dino Monaco

1041 - 1060 of 10443