Date   

Re: Mach1 play in RA Axis - did not adjust out with Gear Mesh adjustment

John Davis
 

Hi Mike - you aren't butting in - any suggestion is appreciated.

Unfortunatley the CW shaft is rock solid - not the source of the play.  I checked that multiple times, and the play is sitll there even with the Dec axis assembly removed.  I wish the solution was that simple.

Thanks for the suggestion!
John


Re: Weather station to complement APPC Pro/APPM modeling? #Mach2GTO #APCC

Dale Ghent
 

I would use weather service sources for barometric pressure if it was not available on-site. Barometric pressure is going to be largely consistent across a wide geographic area.

You can use the ASCOM ObservingConditions Hub (OCH) driver to mix in multiple sources of the various weather properties that ASCOM ObservingConditions covers. So you can use temperature, humidity, and dewpoint from the Pegasus PPA, and air pressure and other data from OpenWeatherMap, a driver for which is included with ASCOM.

To use OpenWeatherMap, you can go to openweathermap.org, create an account, and then create an API Key for that account, which is a string of text characters, which you would then program into the OpenWeatherMap ASCOM driver's configuration screen along with the coordinates or postal code you want data for. The OCH will then mix these sources together and present them to the app (APPM/APCC) for use.

Here are two screenshots from my setup that uses ASCOM OCH to mix in 3 different sources of info:

ASCOM OCH configuration screen with the following sources:

* Pegasus Ultimate Power Box v2 (temperature, humidity, dewpoint)
* Unihedron SQM device (SQM measurements)
* OpenWeatherMap (cloud cover %, air pressure, wind speed/direction/gust speed)

https://i.imgur.com/8sXDX5x.png

And how it shows up in my AP app, NINA in my case:

https://i.imgur.com/6UHJVum.png

(SQM measurement is missing because I don't have that connected at this time)

/dale

On Oct 2, 2020, at 2:01 AM, Marcelo Figueroa via groups.io <marfig1970=yahoo.com@groups.io> wrote:

I am looking for a weather station to support the modeling of my Mach2. My candidates are 2:

1) Pegasus Astro Pocket Powerbox Advance. My favorite, it handles USB ports, power and dew heaters. And it measures temperature and humidity, but NOT barometric pressure.

(It is also perfect to complement the power and USB outputs of the Mach2).


2) MGBox V2 from Astromy.ch. Measures temperature, humidity and pressure (in addition to GPS)


So, which one is the best to accompany the modeling, in short, how important is to be able to measure the barometric pressure?

Thank you,


Weather station to complement APPC Pro/APPM modeling? #Mach2GTO #APCC

Marcelo Figueroa
 

I am looking for a weather station to support the modeling of my Mach2. My candidates are 2:
 
1) Pegasus Astro Pocket Powerbox Advance. My favorite, it handles USB ports, power and dew heaters. And it measures temperature and humidity, but NOT barometric pressure.
 
(It is also perfect to complement the power and USB outputs of the Mach2).
 
 
2) MGBox V2 from Astromy.ch. Measures temperature, humidity and pressure (in addition to GPS)
 
 
So, which one is the best to accompany the modeling, in short, how important is to be able to measure the barometric pressure?
 
Thank you,


Re: Does Howard's email at astro-physic actually work?

CurtisC
 

I'm in the same boat.  I talked to Howard on Sep 22.  He told me he was knee-deep in a must-do project involving the keypad.  Since I was not "dead in the water," he promised to call back once there was some light at the end of the tunnel.  I was OK with that.  


Re: Mach1 play in RA Axis - did not adjust out with Gear Mesh adjustment

Mike Dodd
 

May I butt in to ask a basic question?

On 10/1/2020 11:13 PM, John Davis wrote:
Thanks for that detailed description - I found the parts as described,
and when I moved the counterweight shaft, I could not see or feel any
movement of the silver shaft. The counterweight arm does still move
just as before.
QUESTION: Is the CW shaft screwed-in tightly?

Put your fingers at the connection between the CW shaft and the housing. Can you feel movement? If so, the answer to this question is "NO."

I'm not familiar with the Mach1, but if something moves at point X (the CW shaft), but not at point Y (the worm wheel or worm itself), then something must be loose between points X and Y.

But what do I know? Just a thought....

Mike


Re: Mach1 play in RA Axis - did not adjust out with Gear Mesh adjustment

John Davis
 

Thanks for that detailed description - I found the parts as described, and when I moved the counterweight shaft, I could not see or feel any movement of the silver shaft.  The counterweight arm does still move just as before.

So my ultimate question: is it a problem that the cw shaft moves the amount shown in the video clip (attached to the first post) when the worm is engaged - with or without the clutch engaged?  I was just trying to determine that first - and then if so - how to adjust it out.  Sounds like I've reached the end of the line as far as finding the source of the play.

I'm planning to continue setting the mount up - and getting ready to take it out to the field - then I suppose I'll see if this is an issue or not when imaging.  I was just hoping to remove any source of problems in the field before I go out.

thanks,
John


Does Howard's email at astro-physic actually work?

Tom Blahovici
 

Hi
I had a talk with Howard about my mount and he asked me to send him the pempro curves which I did.
I never heard back. It's now about 10 days. I sent a follow up and again I have heard nothing.
Perhaps I have the wrong email address? Not much too it Howard at .....
Tom


Re: Mach1 play in RA Axis - did not adjust out with Gear Mesh adjustment

Roland Christen
 

The Mach1 is an extremely simple mount. The RA axis has two bearings, one at the upper end of the RA body and one near the middle of the body. There is a sliding window on top of the RA body that can be slid up and out of the way (this is the window where people run their cables thru the mount).

Sliding this window out of the way allows you to actually look inside the RA body, which is hollow, and you will see the shaft bearing retaining nut that preloads the bearings. It's a black anodized ring with two holes on the ends that allow a spanner wrench for tightening. Further up you can see the shaft which is clear anodized (silver). The bearing itself is underneath the black ring.

If it's loose, then the axis shaft can move a bit inside the bearing. You can look right in that opening and see the end of the RA shaft bearing retaining ring and check to see if it moves as you push on the counterweight shaft. You can even put your finger on the retaining nut and feel if there is any movement if you can't see it by eye.

There is nothing whatsoever left that can allow the RA axis to move when you push back and forth on the counterweight shaft.

Roland Christen
Astro-Physics Inc.



-----Original Message-----
From: John Davis <johncdavis200@...>
To: main@ap-gto.groups.io
Sent: Thu, Oct 1, 2020 4:59 pm
Subject: Re: [ap-gto] Mach1 play in RA Axis - did not adjust out with Gear Mesh adjustment

Hi Roland,
  I went back and meticulously re-read your first post, and attempted to the best of my abilities to re-do everything that you suggested- just as you suggested, including the steps to familiarize myself with the behavior of the meshing mechanism.  Everything behaved just as you described.

  I re-performed the meshing procedure following your instructions and those in the documentation for the mount.  That procedure still did not ellimnate the play in the RA axis, as it DID when I performed the same procedure on the Dec axis.  Because that worked, I conclude that I followed the procedure correctly.

  I then added your last step to move the lever to the 90 degree position from fully locked, and gently with one finger pushed back and forth on the end of the counterweight shaft - and it still moved as it does when the lever is pointing to the fully engaged and locked position.

  After all this I re-checked the worm nut - with the cap removed, I cannot feel any movement of the worm shaft when moving the counterweight shaft with my finger.

John


Re: Mach1 play in RA Axis - did not adjust out with Gear Mesh adjustment

John Davis
 

Hi Roland,
  I went back and meticulously re-read your first post, and attempted to the best of my abilities to re-do everything that you suggested- just as you suggested, including the steps to familiarize myself with the behavior of the meshing mechanism.  Everything behaved just as you described.

  I re-performed the meshing procedure following your instructions and those in the documentation for the mount.  That procedure still did not ellimnate the play in the RA axis, as it DID when I performed the same procedure on the Dec axis.  Because that worked, I conclude that I followed the procedure correctly.

  I then added your last step to move the lever to the 90 degree position from fully locked, and gently with one finger pushed back and forth on the end of the counterweight shaft - and it still moved as it does when the lever is pointing to the fully engaged and locked position.

  After all this I re-checked the worm nut - with the cap removed, I cannot feel any movement of the worm shaft when moving the counterweight shaft with my finger.

John


Re: clutch tightening

Roland Christen
 

Yes, you can tighten the Mach1 with an Allen key. You can lock it up or tighten to any setting in between.

Rolando



-----Original Message-----
From: Mike Stephens <mikestephens-milkeycorp@...>
To: main@ap-gto.groups.io
Sent: Thu, Oct 1, 2020 12:31 pm
Subject: Re: [ap-gto] clutch tightening

In ref to below - Just to confirm is Mach 1 considered a " New Mount " and as such it is acceptable to tighten clutch knobs with an Allen Wrench? tnx, Mike


Ref:

    When talking about the “allowable” safe force  to lock clutch knobs , you should always STRESS the fact that you are talking about the NEW mounts AP-(1100, 1600, 32000) , and definitely not the old model AP-(900 & 1200).
 
    Tightening the latter’s clutches with an Allen Key will definitely squish – you often say “mushroom” - the Delrin plugs into the clutch knob threaded hole wall, and make it impossible to ever extract them for replacement – even using the special AP extraction screwdriver, which just chips them like sugar cubes.
 
    I speak from very bitter experience. Took an enormous  effort,  special tools, unique procedures, and lots of AP tech advice tips,  to finally get them out and replaced. Now I tighten “pinky-finger tight”, and leave solving other problems to perfect counterweighting.
 
Joe


Re: clutch tightening

Mike Stephens
 

In ref to below - Just to confirm is Mach 1 considered a " New Mount " and as such it is acceptable to tighten clutch knobs with an Allen Wrench? tnx, Mike


Ref:

    When talking about the “allowable” safe force  to lock clutch knobs , you should always STRESS the fact that you are talking about the NEW mounts AP-(1100, 1600, 32000) , and definitely not the old model AP-(900 & 1200).
 
    Tightening the latter’s clutches with an Allen Key will definitely squish – you often say “mushroom” - the Delrin plugs into the clutch knob threaded hole wall, and make it impossible to ever extract them for replacement – even using the special AP extraction screwdriver, which just chips them like sugar cubes.
 
    I speak from very bitter experience. Took an enormous  effort,  special tools, unique procedures, and lots of AP tech advice tips,  to finally get them out and replaced. Now I tighten “pinky-finger tight”, and leave solving other problems to perfect counterweighting.
 
Joe


Re: Mach1 play in RA Axis - did not adjust out with Gear Mesh adjustment

Roland Christen
 

Before you do that, go back to my first post and do what I suggested.
Then, with the lever half way up (90 degrees from fully locked), gently push on the counterweight shaft with 1 finger back and forth and see if the axis rocks. Very gentle push back and forth, 1 finger.

Roland Christen
Astro-Physics inc.
aka Rolando



-----Original Message-----
From: John Davis <johncdavis200@...>
To: main@ap-gto.groups.io
Sent: Thu, Oct 1, 2020 9:26 am
Subject: Re: [ap-gto] Mach1 play in RA Axis - did not adjust out with Gear Mesh adjustment

Ok. Removed the cover for the worm.  I did not feel any movement of the Worm when I moved the clutch assembly.  So that does not appear to be the problem.
On to the main bearing retainer nut... 


Re: Mach1 play in RA Axis - did not adjust out with Gear Mesh adjustment

John Davis
 

Ok. Removed the cover for the worm.  I did not feel any movement of the Worm when I moved the clutch assembly.  So that does not appear to be the problem.
On to the main bearing retainer nut... 


Re: Mach1 play in RA Axis - did not adjust out with Gear Mesh adjustment

John Davis
 

Will do. Thanks!


Re: Mach1 play in RA Axis - did not adjust out with Gear Mesh adjustment

Roland Christen
 

The black nut covering the worm end simply unscrews. Check that first before you check the main bearings.

Rolando

-----Original Message-----
From: John Davis <johncdavis200@...>
To: main@ap-gto.groups.io
Sent: Wed, Sep 30, 2020 9:21 pm
Subject: Re: [ap-gto] Mach1 play in RA Axis - did not adjust out with Gear Mesh adjustment

Sorry - 2 more questions Rolando:

1). How do I get to the Worm end nut?  I see a round cap on the gear box - but it does not easily move - so I was not comfortable trying to force it  to move - is that the access point to get to the Worm end nut?  If so - how is it removed. If not please tell me where it is accessed

2). you described removing the "cwt adapter on the end of the RA axis" - I'm not sure what this referrs to.  I removed the Dec axis assembly which gave me access to the inside of the RA clutch assembly, but I did not see anything that looked like the "main bearing retainer nut" - could you clarify your description of how to access that retainer nut?

Thanks - sorry to be so dense about this - I'm reading the manual looking for these descriptions of parts - and things do not match up, and I'm being extra cautious at this early point in my ownership of the Mach1.

John


Re: Mach1 play in RA Axis - did not adjust out with Gear Mesh adjustment

John Davis
 

Sorry - 2 more questions Rolando:

1). How do I get to the Worm end nut?  I see a round cap on the gear box - but it does not easily move - so I was not comfortable trying to force it  to move - is that the access point to get to the Worm end nut?  If so - how is it removed. If not please tell me where it is accessed

2). you described removing the "cwt adapter on the end of the RA axis" - I'm not sure what this referrs to.  I removed the Dec axis assembly which gave me access to the inside of the RA clutch assembly, but I did not see anything that looked like the "main bearing retainer nut" - could you clarify your description of how to access that retainer nut?

Thanks - sorry to be so dense about this - I'm reading the manual looking for these descriptions of parts - and things do not match up, and I'm being extra cautious at this early point in my ownership of the Mach1.

John


Re: Mach2 Wifi problems #Mach2GTO #WiFi

Roland Christen
 

Just wrapping aluminum foil over the USB cable will not shield it. The shield must terminate to a ground on both ends of the cable.

Rolando

-----Original Message-----
From: DFisch <manusfisch@...>
To: main@ap-gto.groups.io
Sent: Wed, Sep 30, 2020 4:39 pm
Subject: Re: [ap-gto] Mach2 Wifi problems #Mach2GTO #WiFi


On Wed, Sep 30, 2020, 10:52 Dominique Durand via groups.io <dom33.durand=yahoo.com@groups.io> wrote:
Hi Liam

So I made some measurements with WIFI Analyzer, and it goes from -35db to -80db depending on my position compared to the CP5, but the problem is that when I turn on the computer with the USB3 connected and the antenna raised , the GTOCP5 hotspot disappears, so no measure possible of course. When I put the aluminum foil back on the antenna the hotspot reappears. I also made another test with a small USB2 extension cable (50cm) on the connection to my computer and there with the antenna raised and without aluminum foil the hotspot also reappears !!! This suggests that the "USB3" stream creates interference via the antenna which goes as far as "hiding" the hotspot, because if I move the CP5 away from the USB3 cable it works again.
You should be able to reproduce this situation I think.

Best regards
Dominique


Re: Mach2 Wifi problems #Mach2GTO #WiFi

DFisch
 


On Wed, Sep 30, 2020, 10:52 Dominique Durand via groups.io <dom33.durand=yahoo.com@groups.io> wrote:
Hi Liam

So I made some measurements with WIFI Analyzer, and it goes from -35db to -80db depending on my position compared to the CP5, but the problem is that when I turn on the computer with the USB3 connected and the antenna raised , the GTOCP5 hotspot disappears, so no measure possible of course. When I put the aluminum foil back on the antenna the hotspot reappears. I also made another test with a small USB2 extension cable (50cm) on the connection to my computer and there with the antenna raised and without aluminum foil the hotspot also reappears !!! This suggests that the "USB3" stream creates interference via the antenna which goes as far as "hiding" the hotspot, because if I move the CP5 away from the USB3 cable it works again.
You should be able to reproduce this situation I think.

Best regards
Dominique


Re: Mach2 Wifi problems #Mach2GTO #WiFi

Dominique Durand
 

Hi Rolando, Hi Liam
I just tested by surrounding the USB3 cables near the CP5, with aluminum foil and the antenna raised, it does not give anything better. There may be a set of factors which combine on my installation to arrive at this situation (USB3, CC, ...). It would take other devices than the ones I have to measure the different fields present in this area.We know that there can be a problem like this and we know there is a solution for it to work, that's the main thing right?
Thanks to you two
Best regards
Dominique


Re: DEC ignored during PEM recording?

Brian
 

in case somebody else has this issue: the problem disappeared when I upgraded my control box firmware (to  VCP4-P01-14 from  VCP4-P01-02 :-)

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