Date   

Re: clutch tightening

Nick Iversen
 

A couple of times I have forgotten to tighten the Mach1 knobs. I've still done successful imaging both times. So now I hardly tighten them at all - just finger tight at most.


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

Marcelo Figueroa
 

On Fri, Oct 2, 2020 at 07:15 AM, Dale Ghent wrote:

Okay, thank you very much. I'm going to take a look at openweathermap.org.


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

CurtisC
 

On Fri, Oct 2, 2020 at 10:02 AM, Jim Hawn wrote:
Based on personal experience, I suggest that you give Howard another call directly.
It's not that easy apparently.  I did exactly that on Sep 22.  He told me he'd call back -- eventually.  I sent him some files on Aug 27, and I posted some things in "Files" more recently.  My issue continues to evolve.  But I'll wait.  I'm still imaging.


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

Karen Christen
 

Hi Tom,

 

First, allow me to apologize for the lack of response.  Howard is, indeed, neck-deep in 2 big projects.  But we shouldn’t leave you hanging.  Will you please send a synopsis of the difficulty either directly to me, or share with the group?  We have an amazing hive mind here.  Between Roland, George, our mount builder Dave, our servo engineer Mike, Ray the author of PemPro, and our AP customer family, I’m sure we can help.  I apologize for the delay.  Let’s get your system running at the level you expect.

Karen

AP

 

From: main@ap-gto.groups.io [mailto:main@ap-gto.groups.io] On Behalf Of Tom Blahovici
Sent: Thursday, October 1, 2020 7:43 PM
To: main@ap-gto.groups.io
Subject: [ap-gto] Does Howard's email at astro-physic actually work?

 

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


--
Karen Christen
Astro-Physics


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

Roland Christen
 

If you cannot find the source of the play, perhaps you might send the RA axis in for examination. Just contact the office and ask for a return authorization number.

Roland Christen
Astro-Physics Inc.



-----Original Message-----
From: John Davis <johncdavis200@...>
To: main@ap-gto.groups.io
Sent: Thu, Oct 1, 2020 10:13 pm
Subject: Re: [ap-gto] Mach1 play in RA Axis - did not adjust out with Gear Mesh adjustment

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


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

John Davis
 

Thanks so much for the information!  Just knowing that others have seen the issue and were able to fix it helps a lot.


Re: Mach 2 Measurement #Mach2GTO

thmcclure1@...
 

Joe
Thanks for the post - this is just what I was looking for.
Tom M


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

Jim Hawn
 

Hi Tom,
Based on personal experience, I suggest that you give Howard another call directly.  You may have to leave a message, but he'll get back to you.  You can also try to call back and get him "live" in between calls if you are in a hurry.

In my view, Howard is a valuable member of the AP team that spends the time with customers like me to carefully listen, effectively diagnose problems then work diligently to resolve them collaboratively.  He has been invaluable in resolving my initially perplexing challenges with a new mount and getting me up and running and imaging quickly.  I suggest you give him another call.


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

Tom Blahovici
 

Ok. Understood. However I was not made aware of that.
Having emails go into a black hole does nothing for a companies image.


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

Cheng-Yang Tan
 

Hi John,
   I haven't read the entire thread and Rolando is the expert.

   Here's what I did to remove the RA play with instructions from Rolando and Howard
main@ap-gto.groups.io | Advice needed: I can rock RA in Mach1GTO (very small), should I adjust?



Here's the photos of the nut that I had to tighten by about a 1/4 turn. And then adjust the backstop. After that, my RA is rock solid. And dare I say, I measured my PE after the adjustment and it has also improved.


Inline image
Inline image

cytan


On Friday, October 2, 2020, 07:46:19 AM CDT, John Davis <johncdavis200@...> wrote:


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: 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

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