Date   

Re: Which to Choose; Absolute Encoders or 92 mm Stowaway

Robert Berta
 

I agree donating to a school isn't a good idea....won't get much use unless you can get a dedicated teacher that is willing to be there at night....without pay.  I highly recommend donating to a scout camp...it will get a lot of use year round for scouts working on their astronomy merit badges.  I designed, helped build, and am now manager of an observatory in a huge scout camp in S/E Michigan. We have a 16'x20' roll off roof building housing a 14" Celestron SCT HD on a Celestron CGE PRO mount. We also have two 12" DOBS and a Lunt 60mm Ha solar scope. When the roof is slid back it covers an equal sized area with benches for classes and video talks. We also have capability of video from the telescope to the big screen TV via a Hyperstar setup....but only used occasionally. Normally it is all visual. The outside of the building has  additional concrete pads isolated from the wooden deck to setup the dobs and Lunt solar scope.As far as I know it is the largest astronomy facility in any Scout facility in the world

The camp gets thousands of Boy and Girl Scouts plus younger Cubs and Brownies, Jr. Girl Scouts, etc. We would have AP mounts but that was out of our price range. All the gear and building are through donations and volunteer labor.. We found that Scouts tend to have more interest in outdoor activities than other children of the same age due to the emphasis by Scouting on outdoors activities and STEM. Some of those Scouts join one of the 4 astronomy clubs locally.. There have been 4 Eagle projects (one by my son) at one of the clubs  (Warren Astronomical Society).That club has an AP 1200 GTO supporting a 8" D&G refractor. Needless to say astronomy is a big deal here....when the weather isn't fighting us.


Re: Motor Gear box removal instructions (newer auto-meshing model)

John O'Grady
 

I heard back from George.
I missed the instructions that are applicable for the new gearbox.
They are located on page 9 - problem solved.

Sorry everyone for not taking greater care in RTM.

Thanks - John


Re: Mach2 Status Update

Dean Jacobsen
 

Congratulations guys!  I can't wait to hear about your experiences in getting the mounts set up and your observing and imaging experiences.

Mine is coming too.  ;-)  Although I love my 12 year old AP900, I am looking forward to using all of the advancements that have been incorporated into the Mach 2. 

Thanks to everyone at AP! 
--
Dean Jacobsen
http://astrophoto.net/wp/ 
Image Gallery - http://astrophoto.net/wp/image-gallery/
Astrobin - https://www.astrobin.com/users/deanjacobsen/ 


Re: Mach2 Status Update

Dominique Durand
 

Tomorrow between 8 am and 1 pm (At home) my mach2 will be delivered to me and it will be between 1 and 8 hours in Illinois. Also a big thank you to Roland, Marj, and Karen! and also to Daleen who is doing what it takes to get me up and running tomorrow night and also to the entire AP team.

I think I'm going to have a hard time falling asleep this evening, but I have to keep my strength for this beautiful day that is coming and the night that will follow which promises to be very clear.

Dominique


Re: Motor Gear box removal instructions (newer auto-meshing model)

John O'Grady
 

Hi,

When I remove the plate with the motor & encoder connectors, I see there are two screws on a plate behind the motor. 
I'm assuming I want to:
1. Use the lever to remove the worm from the worm gear
2. Remove the two bolts (completely???) and lift the gearbox off the dovetail.  
 
Is that all there is to it?
 
Then, repeat the same process in reverse, being careful to not bang the worm onto the worm wheel. 

John


Re: Which to Choose; Absolute Encoders or 92 mm Stowaway

Roland Christen
 

At the bottom of the RA axis there are 6 Socket head screws that hold the RA body onto the base. These can be removed and then you can lift the RA and Dec axes off the base. This reduces the weight that you have to lift by 11 lb, so you end up lifting only 31lb. When you re-assemble, you can leave out the two middle screws when you re-assemble the mount, they are overkill. You can leave the base on your tripod when you move it indoors so you are ready for action the next time you go out. Simply place the mount back onto the base, attach the 4 outer screws and tighten them. That's the best I can recommend to you all for now.

Rolando




-----Original Message-----
From: tallman.doug <tallman.doug@...>
To: main@ap-gto.groups.io
Sent: Sun, May 17, 2020 11:25 pm
Subject: Re: [ap-gto] Which to Choose; Absolute Encoders or 92 mm Stowaway

If we could somehow split the Mach2 so that the heaviest part is less than 30lb, is that worthwhile?

Sorry to pick up this old thread, but I will wholeheartedly cast a vote for being able to split the Mach 2 into separate pieces.

When I image from the backyard I need to carry all my equipment up about 8-9' of stairs. I found that it is doable with the Mach1, but the 42 lb. weight of the Mach 2 has me a little worried. I'm not a big guy, and have had a minor knee surgery and three major hip surgeries (last one just 10 days ago), with the prospect of a few more down the line. Anything towards reducing the Mach2 mount weight is music to my ears.

-Doug


Re: Which to Choose; Absolute Encoders or 92 mm Stowaway

thefamily90 Phillips
 

I have one of the older Mach 1s which I love and is still performing wonderfully. I too have wished as with my AP 900 and 1200 it could be broken down into two pieces.

Jim


From: main@ap-gto.groups.io <main@ap-gto.groups.io> on behalf of tallman.doug <tallman.doug@...>
Sent: Monday, May 18, 2020 12:25:50 AM
To: main@ap-gto.groups.io <main@ap-gto.groups.io>
Subject: Re: [ap-gto] Which to Choose; Absolute Encoders or 92 mm Stowaway
 
If we could somehow split the Mach2 so that the heaviest part is less than 30lb, is that worthwhile?

Sorry to pick up this old thread, but I will wholeheartedly cast a vote for being able to split the Mach 2 into separate pieces.

When I image from the backyard I need to carry all my equipment up about 8-9' of stairs. I found that it is doable with the Mach1, but the 42 lb. weight of the Mach 2 has me a little worried. I'm not a big guy, and have had a minor knee surgery and three major hip surgeries (last one just 10 days ago), with the prospect of a few more down the line. Anything towards reducing the Mach2 mount weight is music to my ears.

-Doug


Re: Mach2 Status Update

 

Well folks, this morning I was notified that my Mach 2 will be shipped this afternoon.  I'm very excited.  A big thank you to Roland, Marj, and Karen!

For a reference, I put myself on the Mach 1 list on October 17, 2018, so you may be able to determine where you are from that. 

If you're still waiting too, there is hope. :)


Re: Mach2 Status Update

Michael Hambrick <mike.hambrick@...>
 

Thanks Karen

Hopefully Illinois can open back up sooner than later, once it becomes more obvious that the virus is not rebounding in the states that have opened back up.

Hang in there.


Best Regards

Michael Hambrick
ARLANXEO
TSR Global Manufacturing Support
PO Box 2000
Orange, TX 77631-2000
Phone: +1 (409) 882-2799
email: mike.hambrick@...


Re: Which to Choose; Absolute Encoders or 92 mm Stowaway

tallman.doug
 

If we could somehow split the Mach2 so that the heaviest part is less than 30lb, is that worthwhile?

Sorry to pick up this old thread, but I will wholeheartedly cast a vote for being able to split the Mach 2 into separate pieces.

When I image from the backyard I need to carry all my equipment up about 8-9' of stairs. I found that it is doable with the Mach1, but the 42 lb. weight of the Mach 2 has me a little worried. I'm not a big guy, and have had a minor knee surgery and three major hip surgeries (last one just 10 days ago), with the prospect of a few more down the line. Anything towards reducing the Mach2 mount weight is music to my ears.

-Doug


Re: Motor Gear box removal instructions (newer auto-meshing model)

John O'Grady
 

Hi Charles,

Thanks for responding and I apologize if my earlier post wasn't clear. 
I have a motor gear box without cover (cap) screws. 
Therefore, I'm at a bit of a loss as to how to proceed.

Thanks,
John


Re: Motor Gear box removal instructions (newer auto-meshing model)

Charles Thompson
 

I believe the screws are deeper in those holes that have the cover screws. It takes a little precision to get the allen key all the way in there and hit the mark. That might be what you are missing. 





Thanks,
Charles

Sent from mobile device.


-------- Original message --------
From: "John O'Grady via groups.io" <john_ogrady@...>
Date: 5/17/20 8:18 PM (GMT-06:00)
To: main@ap-gto.groups.io
Subject: [ap-gto] Motor Gear box removal instructions (newer auto-meshing model)

Hi,

I'm looking for instructions on how to remove the motor gear box on my AP1100GTO.  I have the latest model (I believe) of motor gear box supporting auto-meshing capability with the lever for disengaging the worm from the worm wheel.  I can't find removal instructions for this specific model of motor gear box.  I'm wanting to re-grease the mount and the instructions that came with the grease kit describe an earlier model that has cap screws on the exterior.  I hesitant to proceed opening things up without the matching documentation.  

I checked the documents on astro-physics website and the files on groups.io but I may be overlooking which manual is the correct one to follow.
Can someone point me in the right direction?

Thanks
John


Motor Gear box removal instructions (newer auto-meshing model)

John O'Grady
 

Hi,

I'm looking for instructions on how to remove the motor gear box on my AP1100GTO.  I have the latest model (I believe) of motor gear box supporting auto-meshing capability with the lever for disengaging the worm from the worm wheel.  I can't find removal instructions for this specific model of motor gear box.  I'm wanting to re-grease the mount and the instructions that came with the grease kit describe an earlier model that has cap screws on the exterior.  I hesitant to proceed opening things up without the matching documentation.  

I checked the documents on astro-physics website and the files on groups.io but I may be overlooking which manual is the correct one to follow.
Can someone point me in the right direction?

Thanks
John


Re: Advice needed: I can rock RA in Mach1GTO (very small), should I adjust?

Roland Christen
 

Thank you for posting that.

Rolando



-----Original Message-----
From: Gabe Shaughnessy <gshaughnessy@...>
To: main@ap-gto.groups.io
Sent: Sun, May 17, 2020 3:22 pm
Subject: Re: [ap-gto] Advice needed: I can rock RA in Mach1GTO (very small), should I adjust?

I had a similar issue to this with my AP1100.  I adjusted the backstop, but that didn't help.  I followed some additional adjustment instructions given by Roland here. Worked like a charm!

Gabe


Re: Advice needed: I can rock RA in Mach1GTO (very small), should I adjust?

Gabe Shaughnessy
 

I had a similar issue to this with my AP1100.  I adjusted the backstop, but that didn't help.  I followed some additional adjustment instructions given by Roland here. Worked like a charm!

Gabe


Re: Advice needed: I can rock RA in Mach1GTO (very small), should I adjust?

Cheng-Yang Tan
 

Hi Rolando,
   Thanks for the info. That's the reason why I didn't do anything. I'll call George tomorrow.

cytan

On Sunday, May 17, 2020, 03:05:11 PM CDT, uncarollo2 <chris1011@...> via groups.io <chris1011@...> wrote:


Worm tooth mesh is only one of several possible reasons why the RA axis could rock back and forth. One reason, other than worm mesh, is that the end play nut has come loose and needs to be tightened up. This nut holds the worm bearings in place and can be reached by removing the small round cover on the side of the gearbox.

The problem with trying to get answers on a user group is that there is never any meaningful information, we only hear about the symptoms. However, if you call George by phone, he can run you thru a series of checks that can pinpoint what is really happening. George is available to help AP users on regular business hours, so either give him a call or send him an e-mail and set up a time when you can be at your mount.

Rolando

-----Original Message-----
From: Frank Widmann via groups.io <fjwidmann@...>
To: main@ap-gto.groups.io
Sent: Sun, May 17, 2020 2:42 pm
Subject: Re: [ap-gto] Advice needed: I can rock RA in Mach1GTO (very small), should I adjust?

AP has a procedure for adjusting the mesh between the worm and the worm gear that will eliminate the play in either axis. The play is easier to detect in RA because of the large moment arm provided by the counterweight shaft. Declination should be checked to if it has been a while. The procedure is available on line under Support.

Frank

On May 17, 2020, at 8:47 AM, Peter Bresler via groups.io <PABresler@...> wrote:

I also noted some play in the RA in my Mach1. I tried the lever adjustment but it made no change. The entire gear box moves a little.


Re: Advice needed: I can rock RA in Mach1GTO (very small), should I adjust?

Bill Long
 

I should have clarified, the PDF is what I was referring to. Not the solution to the problem being related to it.



From: main@ap-gto.groups.io <main@ap-gto.groups.io> on behalf of uncarollo2 <chris1011@...> via groups.io <chris1011@...>
Sent: Sunday, May 17, 2020 1:05 PM
To: main@ap-gto.groups.io <main@ap-gto.groups.io>; george@... <george@...>
Subject: Re: [ap-gto] Advice needed: I can rock RA in Mach1GTO (very small), should I adjust?
 
The backstop does not prevent the axis from rocking back and forth unless you put a huge amount of force on the axis that causes the worm teeth to lift out of the worm wheel. Checking axis backlash should never require huge force to try to move the axis, rather it should be just finger pressure back and forth. If it doesn't move with finger pressure, then all is well. However, if finger pressure does move the axis, then it is an indication that the worm bearings are loose, or even that the main bearing end play nut has come loose.

Give George a call.

Rolando



-----Original Message-----
From: Bill Long <bill@...>
To: Cheng-Yang Tan via groups. io <cytan299@...>; Frank Widmann via groups. io <fjwidmann@...>; main@ap-gto.groups.io <main@ap-gto.groups.io>
Sent: Sun, May 17, 2020 2:57 pm
Subject: Re: [ap-gto] Advice needed: I can rock RA in Mach1GTO (very small), should I adjust?

Then it's the backstop. It's largely irrelevant though. I would leave it alone.


From: main@ap-gto.groups.io <main@ap-gto.groups.io> on behalf of Cheng-Yang Tan via groups.io <cytan299@...>
Sent: Sunday, May 17, 2020 12:49 PM
To: Frank Widmann via groups. io <fjwidmann@...>; main@ap-gto.groups.io <main@ap-gto.groups.io>
Subject: Re: [ap-gto] Advice needed: I can rock RA in Mach1GTO (very small), should I adjust?
 
My Mach1GTO is from the final batch made. So it should be this one:


I'm waiting for the official word before going ahead with it.

cytan

On Sunday, May 17, 2020, 02:45:48 PM CDT, Bill Long <bill@...> wrote:


It's important to know which Mach 1 it is.


From: main@ap-gto.groups.io <main@ap-gto.groups.io> on behalf of Frank Widmann via groups.io <fjwidmann@...>
Sent: Sunday, May 17, 2020 12:42 PM
To: main@ap-gto.groups.io <main@ap-gto.groups.io>
Subject: Re: [ap-gto] Advice needed: I can rock RA in Mach1GTO (very small), should I adjust?
 
AP has a procedure for adjusting the mesh between the worm and the worm gear that will eliminate the play in either axis. The play is easier to detect in RA because of the large moment arm provided by the counterweight shaft. Declination should be checked to if it has been a while. The procedure is available on line under Support.

Frank

On May 17, 2020, at 8:47 AM, Peter Bresler via groups.io <PABresler@...> wrote:

I also noted some play in the RA in my Mach1. I tried the lever adjustment but it made no change. The entire gear box moves a little.


Re: Advice needed: I can rock RA in Mach1GTO (very small), should I adjust?

Roland Christen
 

The backstop does not prevent the axis from rocking back and forth unless you put a huge amount of force on the axis that causes the worm teeth to lift out of the worm wheel. Checking axis backlash should never require huge force to try to move the axis, rather it should be just finger pressure back and forth. If it doesn't move with finger pressure, then all is well. However, if finger pressure does move the axis, then it is an indication that the worm bearings are loose, or even that the main bearing end play nut has come loose.

Give George a call.

Rolando



-----Original Message-----
From: Bill Long <bill@...>
To: Cheng-Yang Tan via groups. io <cytan299@...>; Frank Widmann via groups. io <fjwidmann@...>; main@ap-gto.groups.io <main@ap-gto.groups.io>
Sent: Sun, May 17, 2020 2:57 pm
Subject: Re: [ap-gto] Advice needed: I can rock RA in Mach1GTO (very small), should I adjust?

Then it's the backstop. It's largely irrelevant though. I would leave it alone.


From: main@ap-gto.groups.io <main@ap-gto.groups.io> on behalf of Cheng-Yang Tan via groups.io <cytan299@...>
Sent: Sunday, May 17, 2020 12:49 PM
To: Frank Widmann via groups. io <fjwidmann@...>; main@ap-gto.groups.io <main@ap-gto.groups.io>
Subject: Re: [ap-gto] Advice needed: I can rock RA in Mach1GTO (very small), should I adjust?
 
My Mach1GTO is from the final batch made. So it should be this one:


I'm waiting for the official word before going ahead with it.

cytan

On Sunday, May 17, 2020, 02:45:48 PM CDT, Bill Long <bill@...> wrote:


It's important to know which Mach 1 it is.


From: main@ap-gto.groups.io <main@ap-gto.groups.io> on behalf of Frank Widmann via groups.io <fjwidmann@...>
Sent: Sunday, May 17, 2020 12:42 PM
To: main@ap-gto.groups.io <main@ap-gto.groups.io>
Subject: Re: [ap-gto] Advice needed: I can rock RA in Mach1GTO (very small), should I adjust?
 
AP has a procedure for adjusting the mesh between the worm and the worm gear that will eliminate the play in either axis. The play is easier to detect in RA because of the large moment arm provided by the counterweight shaft. Declination should be checked to if it has been a while. The procedure is available on line under Support.

Frank

On May 17, 2020, at 8:47 AM, Peter Bresler via groups.io <PABresler@...> wrote:

I also noted some play in the RA in my Mach1. I tried the lever adjustment but it made no change. The entire gear box moves a little.


Re: Advice needed: I can rock RA in Mach1GTO (very small), should I adjust?

Roland Christen
 

Worm tooth mesh is only one of several possible reasons why the RA axis could rock back and forth. One reason, other than worm mesh, is that the end play nut has come loose and needs to be tightened up. This nut holds the worm bearings in place and can be reached by removing the small round cover on the side of the gearbox.

The problem with trying to get answers on a user group is that there is never any meaningful information, we only hear about the symptoms. However, if you call George by phone, he can run you thru a series of checks that can pinpoint what is really happening. George is available to help AP users on regular business hours, so either give him a call or send him an e-mail and set up a time when you can be at your mount.

Rolando

-----Original Message-----
From: Frank Widmann via groups.io <fjwidmann@...>
To: main@ap-gto.groups.io
Sent: Sun, May 17, 2020 2:42 pm
Subject: Re: [ap-gto] Advice needed: I can rock RA in Mach1GTO (very small), should I adjust?

AP has a procedure for adjusting the mesh between the worm and the worm gear that will eliminate the play in either axis. The play is easier to detect in RA because of the large moment arm provided by the counterweight shaft. Declination should be checked to if it has been a while. The procedure is available on line under Support.

Frank

On May 17, 2020, at 8:47 AM, Peter Bresler via groups.io <PABresler@...> wrote:

I also noted some play in the RA in my Mach1. I tried the lever adjustment but it made no change. The entire gear box moves a little.


Re: Advice needed: I can rock RA in Mach1GTO (very small), should I adjust?

Bill Long
 

Then it's the backstop. It's largely irrelevant though. I would leave it alone.


From: main@ap-gto.groups.io <main@ap-gto.groups.io> on behalf of Cheng-Yang Tan via groups.io <cytan299@...>
Sent: Sunday, May 17, 2020 12:49 PM
To: Frank Widmann via groups. io <fjwidmann@...>; main@ap-gto.groups.io <main@ap-gto.groups.io>
Subject: Re: [ap-gto] Advice needed: I can rock RA in Mach1GTO (very small), should I adjust?
 
My Mach1GTO is from the final batch made. So it should be this one:


I'm waiting for the official word before going ahead with it.

cytan

On Sunday, May 17, 2020, 02:45:48 PM CDT, Bill Long <bill@...> wrote:


It's important to know which Mach 1 it is.


From: main@ap-gto.groups.io <main@ap-gto.groups.io> on behalf of Frank Widmann via groups.io <fjwidmann@...>
Sent: Sunday, May 17, 2020 12:42 PM
To: main@ap-gto.groups.io <main@ap-gto.groups.io>
Subject: Re: [ap-gto] Advice needed: I can rock RA in Mach1GTO (very small), should I adjust?
 
AP has a procedure for adjusting the mesh between the worm and the worm gear that will eliminate the play in either axis. The play is easier to detect in RA because of the large moment arm provided by the counterweight shaft. Declination should be checked to if it has been a while. The procedure is available on line under Support.

Frank

On May 17, 2020, at 8:47 AM, Peter Bresler via groups.io <PABresler@...> wrote:

I also noted some play in the RA in my Mach1. I tried the lever adjustment but it made no change. The entire gear box moves a little.

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