Date   

Slight Slop in Dec Axis of Mach2 Mount

mjb87@...
 

My Mach2 has a bit of slop in the Dec axis. With clutches tight I can move the axis a very small amount. The RA axis, in contrast, is rock solid.

Another individual posted a similar problem regarding slop in the RA axis of his Mach 2: https://ap-gto.groups.io/g/main/message/81162

Do I need to follow the same process, in this case on my Dec axis?

Marty


Re: Smart Meridian Flip with NINA #APCC

Joseph Beyer
 

Not sure yet.  I got APCC working again with CdC and NINA yesterday but haven't run another sequence yet due to overcast skies.  The .mlm file I was using during the last sequencer run with the errant smart meridian flip is posted here:

https://drive.google.com/file/d/1gVYTAr03XbC2ZASwQ1t7N1MZbzPHzduO/view?usp=sharing


Re: APCC - APPM - and ASTAP

Jack Huerkamp
 

I was not running the mount at all.  I was inside my house running ASTAP in stand alone mode on my home computer to become familiar with it.  According to the ASTAP site, it is possible to solve images by feeding them directly into the program.  That is what I was trying to do, and no matter what image I fed into the program, it failed to solve.  That is when I contacted Han at hnsky.org and he provided things to try to get the images to solve – and they did. 

 

Once I am out in the observatory and running ASTAP with APPM on my mount, scope and camera, hopefully all will work as designed.

 

Yours truly,

 

Jack

 

Jack Huerkamp

Jack's Astro Accessories, LLC

38388 Pine Street

Pearl River, LA 70452-5192

985-445-5063

mallincamusa@...

www.mallincamusa.com

30.37N  89.76W

 

All of us get lost in the darkness.
Dreamers learn to steer by the stars.

………………………………….Neil Peart

 

 

 

From: main@ap-gto.groups.io <main@ap-gto.groups.io> On Behalf Of ap@...
Sent: Monday, October 04, 2021 12:24 PM
To: main@ap-gto.groups.io
Subject: Re: [ap-gto] APCC - APPM - and ASTAP

 

Jack Huerkamp wrote:

 

  • Mainly image scale, but putting a rough RA and Dec into the boxes so that the program did not have to search the entire sky helped a lot.  I assume that when running APPM with ASTAP, I will see the target RA and Dec and then I will be able to input them into ASTAP to help refine the plate solving.  I will find out once the skies clear here in SE Louisiana.

 

No,  you should not need to, the RA/DEC should be provided by the connection to your mount and/or by the FITS headers (not completely sure which, they both provide it).

 

If you were doing this running the simulator you should also connect to the same simulator in APPM and NINA.  Both NINA and APPM should have a connection to the (same) mount.

 


Virus-free. www.avg.com


Re: APCC - APPM - and ASTAP

Jack Huerkamp
 

Roland,

 

I was not trying to run the mount during the day using APCC.  I was attempting to learn how ASTAP works by feeding into it previously captured images and solving for them in the program.  Initially every solve I attempted failed and I contacted Han at hnsky.org.  He was able to make suggestions on things to set up in ASTAP and once I did so, the images I fed into the program did solve.

 

Now that I know that ASTAP works with images produced with my scope/camera combo, I will try doing a APPM run as soon as it clears.

 

Yours truly,

 

Jack

 

Jack Huerkamp

Jack's Astro Accessories, LLC

38388 Pine Street

Pearl River, LA 70452-5192

985-445-5063

mallincamusa@...

www.mallincamusa.com

30.37N  89.76W

 

All of us get lost in the darkness.
Dreamers learn to steer by the stars.

………………………………….Neil Peart

 

 

 

From: main@ap-gto.groups.io <main@ap-gto.groups.io> On Behalf Of Roland Christen via groups.io
Sent: Monday, October 04, 2021 12:31 PM
To: main@ap-gto.groups.io
Subject: Re: [ap-gto] APCC - APPM - and ASTAP

 

During simulation is the mount actually pointing to the object? How would you know if it was done indoors during the day?

 

Roland

 

 

-----Original Message-----
From: ap@... <ap@...>
To: main@ap-gto.groups.io <main@ap-gto.groups.io>
Sent: Mon, Oct 4, 2021 12:23 pm
Subject: Re: [ap-gto] APCC - APPM - and ASTAP

Jack Huerkamp wrote:

 

  • Mainly image scale, but putting a rough RA and Dec into the boxes so that the program did not have to search the entire sky helped a lot.  I assume that when running APPM with ASTAP, I will see the target RA and Dec and then I will be able to input them into ASTAP to help refine the plate solving.  I will find out once the skies clear here in SE Louisiana.

 

No,  you should not need to, the RA/DEC should be provided by the connection to your mount and/or by the FITS headers (not completely sure which, they both provide it).

 

If you were doing this running the simulator you should also connect to the same simulator in APPM and NINA.  Both NINA and APPM should have a connection to the (same) mount.

 


--
Roland Christen
Astro-Physics


Virus-free. www.avg.com


Re: RA Mesh adjustment for 2104 model Mach 1 GTO

nicholas
 

yes I can absolutely do these. It is supposed to be clear tomorrow night. 


Re: APCC - APPM - and ASTAP

ap@CaptivePhotons.com
 

Roland Christen wrote:

 

  • During simulation is the mount actually pointing to the object? How would you know if it was done indoors during the day?

 

 

When I do it, I use the real mount and a camera simulator that downloads sky surveys.   I pick objects current “out” in daylight, so no time shenanigans.

 

The mount actually slews, etc. does everything as usual (with or without an OTA, usually without).

 

The sky survey download is generated based on the coordinates the mount shows, and you can set a tolerance (e.g. tell it to be off by 50” or whatever).  This lets you throw a bit of error into the mix, however it prevents you from reliably syncing since it then consistently stays off about that much.

 

I THINK that the ASCOM telescope simulator will all do the same, but have not tried that.

 

I’ve had very good luck debugging issues like meridian flips doing it all in daylight.  I generally avoid plate solving, an definitely avoid auto focus runs since the simulated images are always in focus.

 

Linwood

 


Re: RA Mesh adjustment for 2104 model Mach 1 GTO

nicholas
 

Thank you Roland.


Re: Smart Meridian Flip with NINA #APCC

Dale Ghent
 

Joseph, I'm catching up on emails after a vacation. Is this still an issue? If so, can you share your .mlm file?

On Oct 2, 2021, at 18:21, Joseph Beyer <jcbeyer2001@...> wrote:

The smart meridian flip didn't work well for me last night. I ran a 28 point APPM arc before imaging. When I started the sequencer the telescope slewed directly to the target, centered (no movement was required as it was centered already) and focused. Before NINA started imaging the meridian flip flow alert popped up indicating a meridian flip was scheduled in 35 minutes - which was wrong based on my position. The program didn't start imaging but just seemed to be waiting for the flip. I canceled the alert and NINA started imaging and the interval east of the meridian was uneventful. The flip came at the correct time indicated by the sequencer, not the 35 minutes initially indicated, but after the mount flipped it ended up pointing somewhere north of the target - plate solved - then slewed further away from the target. I attempted to repoint the mount using CdC and it also went the wrong direction. Shortly after APCC crashed and after restarting the virtual ports I use 20 and 21 had been replaced by 8 and 9. Tried reslewing to the target and it was clear the mount was lost. Manually moved it to PARK 3 and closed it up for the night.

The standard meridian flip worked great several days earlier. The smart meridian flip not so much.

I can provide logs if anyone is interested. I'll check in with the NINA forum as well.

Joe


Re: Keypad : some buttons not responding too well

George
 

Jeff,

 

Please contact me at AP.  

 

Regards,

 

George

 

George Whitney

Astro-Physics, Inc.

Phone:  815-222-6538 (direct line)

Phone:  815-282-1513 (office)

Email:  george@...

 

From: main@ap-gto.groups.io <main@ap-gto.groups.io> On Behalf Of Jeff B
Sent: Monday, October 4, 2021 12:22 PM
To: main@ap-gto.groups.io
Subject: Re: [ap-gto] Keypad : some buttons not responding too well

 

George, this is Jeff, not Mike.  I have one Keypad where a couple of the buttons, specifically the "S" and "> NEXT" buttons go dead on me from time to time, at the same time.  Everything else works just fine and the mount slews just fine too.  Now, I hate to admit this, but my "solution" to the buttons not responding has been to give the Keypad a sharp whack against the pier.  Then, after maybe a little "stuttering", the buttons work fine as does everything else with the Keypad.

 

I don't believe my "solution" is a good long term "fix".  😁  

 

Should I route it to AP for servicing?

 

Jeff

 

On Mon, Oct 4, 2021 at 12:14 PM George <george@...> wrote:

Mike,

 

Contact me re: Keypad button issues.

 

Regards,

 

George

 

George Whitney

Astro-Physics, Inc.

Phone:  815-222-6538 (direct line)

Phone:  815-282-1513 (office)

Email:  george@...

 


Re: APCC - APPM - and ASTAP

Roland Christen
 

During simulation is the mount actually pointing to the object? How would you know if it was done indoors during the day?

Roland


-----Original Message-----
From: ap@... <ap@...>
To: main@ap-gto.groups.io <main@ap-gto.groups.io>
Sent: Mon, Oct 4, 2021 12:23 pm
Subject: Re: [ap-gto] APCC - APPM - and ASTAP

Jack Huerkamp wrote:
 
  • Mainly image scale, but putting a rough RA and Dec into the boxes so that the program did not have to search the entire sky helped a lot.  I assume that when running APPM with ASTAP, I will see the target RA and Dec and then I will be able to input them into ASTAP to help refine the plate solving.  I will find out once the skies clear here in SE Louisiana.
 
No,  you should not need to, the RA/DEC should be provided by the connection to your mount and/or by the FITS headers (not completely sure which, they both provide it).
 
If you were doing this running the simulator you should also connect to the same simulator in APPM and NINA.  Both NINA and APPM should have a connection to the (same) mount.
 

--
Roland Christen
Astro-Physics


Re: APCC - APPM - and ASTAP

ap@CaptivePhotons.com
 

Jack Huerkamp wrote:

 

  • Mainly image scale, but putting a rough RA and Dec into the boxes so that the program did not have to search the entire sky helped a lot.  I assume that when running APPM with ASTAP, I will see the target RA and Dec and then I will be able to input them into ASTAP to help refine the plate solving.  I will find out once the skies clear here in SE Louisiana.

 

No,  you should not need to, the RA/DEC should be provided by the connection to your mount and/or by the FITS headers (not completely sure which, they both provide it).

 

If you were doing this running the simulator you should also connect to the same simulator in APPM and NINA.  Both NINA and APPM should have a connection to the (same) mount.

 


Re: Keypad : some buttons not responding too well

Jeff B
 

George, this is Jeff, not Mike.  I have one Keypad where a couple of the buttons, specifically the "S" and "> NEXT" buttons go dead on me from time to time, at the same time.  Everything else works just fine and the mount slews just fine too.  Now, I hate to admit this, but my "solution" to the buttons not responding has been to give the Keypad a sharp whack against the pier.  Then, after maybe a little "stuttering", the buttons work fine as does everything else with the Keypad.

I don't believe my "solution" is a good long term "fix".  😁  

Should I route it to AP for servicing?

Jeff

On Mon, Oct 4, 2021 at 12:14 PM George <george@...> wrote:

Mike,

 

Contact me re: Keypad button issues.

 

Regards,

 

George

 

George Whitney

Astro-Physics, Inc.

Phone:  815-222-6538 (direct line)

Phone:  815-282-1513 (office)

Email:  george@...

 


Re: APCC - APPM - and ASTAP

 

Thanks Jack

I wasn't aware ASTAP was able to do all sky solving by fiddling with the settings, so that's an interesting add

On Mon, Oct 4, 2021 at 10:19 AM Jack Huerkamp <Mallincamusa@...> wrote:

Brian,

 

Mainly image scale, but putting a rough RA and Dec into the boxes so that the program did not have to search the entire sky helped a lot.  I assume that when running APPM with ASTAP, I will see the target RA and Dec and then I will be able to input them into ASTAP to help refine the plate solving.  I will find out once the skies clear here in SE Louisiana.

 

Yours truly,

 

Jack

 

Jack Huerkamp

Jack's Astro Accessories, LLC

38388 Pine Street

Pearl River, LA 70452-5192

985-445-5063

mallincamusa@...

www.mallincamusa.com

30.37N  89.76W

 

All of us get lost in the darkness.
Dreamers learn to steer by the stars.

………………………………….Neil Peart

 

 

 

From: main@ap-gto.groups.io <main@ap-gto.groups.io> On Behalf Of Brian Valente
Sent: Monday, October 04, 2021 11:44 AM
To: main@ap-gto.groups.io
Subject: Re: [ap-gto] APCC - APPM - and ASTAP

 

That's great to hear Jack

What was the issue that you fixed - was it your image scale settings?


Virus-free. www.avg.com



--
Brian 



Brian Valente


Re: APCC - APPM - and ASTAP

Jack Huerkamp
 

Brian,

 

Mainly image scale, but putting a rough RA and Dec into the boxes so that the program did not have to search the entire sky helped a lot.  I assume that when running APPM with ASTAP, I will see the target RA and Dec and then I will be able to input them into ASTAP to help refine the plate solving.  I will find out once the skies clear here in SE Louisiana.

 

Yours truly,

 

Jack

 

Jack Huerkamp

Jack's Astro Accessories, LLC

38388 Pine Street

Pearl River, LA 70452-5192

985-445-5063

mallincamusa@...

www.mallincamusa.com

30.37N  89.76W

 

All of us get lost in the darkness.
Dreamers learn to steer by the stars.

………………………………….Neil Peart

 

 

 

From: main@ap-gto.groups.io <main@ap-gto.groups.io> On Behalf Of Brian Valente
Sent: Monday, October 04, 2021 11:44 AM
To: main@ap-gto.groups.io
Subject: Re: [ap-gto] APCC - APPM - and ASTAP

 

That's great to hear Jack

What was the issue that you fixed - was it your image scale settings?


Virus-free. www.avg.com


Re: APCC - APPM - and ASTAP

 

That's great to hear Jack

What was the issue that you fixed - was it your image scale settings?


Re: APCC - APPM - and ASTAP

Jack Huerkamp
 

I received this from Han, the author of ASTAP after sending him one of my PNG images and the astrometry.net solve of it:

Hello Jack,

It solves see attached screenshot settings.

Enter an estimate position ( ra=1.5, dec 30)  in the viewer or double click on RA and enter M33.

field of view (height) is 0.42 degrees or put this on auto

Use H18 star database since your field of view is small.

un-check calibration.

Note you can go fully blind by entering the search range of 180 degrees. You could also set FOV on auto but that takes time so better enter 0.42degrees for your system.

Clear skies, Han"

I tested ATPAS with several images this morning and it did solve them if I put in a rough RA and Dec position.  I assume that will not be an issue while running APPM as the mount's position will be indicated in APCC and I could feed the position into ASTAP for the purpose of plate solving.

I hope my logic is accurate as I hope to try an APPM run as soon as the skies clear.

Yours truly,

Jack Huerkamp


Re: Keypad : some buttons not responding too well

George
 

Mike,

 

Contact me re: Keypad button issues.

 

Regards,

 

George

 

George Whitney

Astro-Physics, Inc.

Phone:  815-222-6538 (direct line)

Phone:  815-282-1513 (office)

Email:  george@...

 


Re: RA Mesh adjustment for 2104 model Mach 1 GTO

Roland Christen
 

Hello Nicholas,

I think in your case the first order of business to get your mount up to snuff is to take a 15 to 20 minute run in PHD2 and get a screen shot of the guider graph. Use 2 second exposures on the guide star. You want to turn off the guide corrections and just let the mount track and record the tracking graph for RA and Dec. Make sure that you have turned off PEM for this initial test because we want to see what your mount baseline tracking is. The Dec portion of the graph will let use determine what portion of the tracking noise is atmospheric (seeing) induced.

One very easy way to do this is to use the Guiding Assistant in PHD2. Set it to run for at least 15 to 20 minutes so that you capture 2 to 3 worm cycles. You want to point your scope to roughly 0 Declination near the meridian (either side is fine). Once you get this unguided tracking graph, I can determine the health of the RA axis and the basic mount and maybe suggest some things you might try to make the mount perform better.

For the Dec axis, the best way to determine the health of that axis would be to run the backlash test and post the graph. For now, do not make any adjustments to the mount until we can see these baseline data points.

Can you do these test for me so I can help you get the most out of your new-to-you mount?

Roland Christen
Astro-Physics Inc.


-----Original Message-----
From: nicholas via groups.io <chironik@...>
To: main@ap-gto.groups.io
Sent: Sat, Oct 2, 2021 10:03 pm
Subject: [ap-gto] RA Mesh adjustment for 2104 model Mach 1 GTO

I would like to know from other owners of AP mounts if you are fully loaded and you grip the counter shaft and use a small amount though distinctive force through the DEC axis will you  notice any discernable movement of the RA structure? I do, when it is fully loaded. It is a small a amount, maybe 1/8 MM or less. but that movement is discernable. 
 

Thank you!

--
Roland Christen
Astro-Physics


Re: Mach 2 Meshing

Roland Christen
 

The worm assembly is on a pivot and uses springs to gently push it into mesh. The backstop is set to allow only a few thou of in-out movement which is enough to keep the worm always in mesh. The worm wheel is precision machined with extremely low eccentricity.

Rolando

-----Original Message-----
From: Bill Long <bill@...>
To: AP-GTO Groups. io <ap-gto@groups.io>
Sent: Sat, Oct 2, 2021 9:24 pm
Subject: [ap-gto] Mach 2 Meshing

I am curious, how does the Mach 2 maintain its gear meshing on its own?

--
Roland Christen
Astro-Physics


Re: Rookie Question

ap@CaptivePhotons.com
 

Jeffc wrote:

 

A proper bracket would be nice.

 

First, I agree, and love Joel’s work.

 

I did a bit of research and want to correct an impression prior photos may have left if we are talking about going under the saddle. Be aware of the dimensions.  Mine was a PPBadv, which the web site specs at 25mm; the ultimate is 30mm. 


I also realized the photo I sent earlier was incorrect – the gears were disengaged, which left the motor housing lower.  This is the spacing with the mesh engaged at closest approach:

 

 

That’s probably less than a millimeter, and I realized I actually risked a crunch there without realizing it, though it does clear.  But if you go beneath, the natural approach is swinging it with the mesh disengaged – be aware of the height difference.  Or disengage the clutches instead to check clearance.

 

Above (i.e. bottom of the PPBadv) there is more clearance, about 3mm (eyeball estimate) where the bracket holds it off.  This is not adjustable with the holes in it now. A bracket with no hold-off could save that space, but on the 1100 if the 30 vs 25mm height is right, there is NOT clearance for the Ultimate in this location even flush on the saddle.  On the front yes, since the DEC motor housing and saddle clearance do not change with rotation (well, unless you rotate DEC anywhere near 180 degrees of course then it may hit the RA housing).

 

Anyway, if you are looking at the saddle, do swing both axes in all the positions you  plan to use as there is not much room under.  Just barely enough for what I did.  And if someone makes a bracket to go above or below the unit, even the PPBadv is not going to fit on the back side.  Well, unless you stick it way in the back beyond the motor housing on the tip of the saddle.

 

 

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