Date   

Re: Problem with Mach2 #Mach2GTO #APCC #Absolute_Encoders

David Johnson
 

Definitely some weirdness with the RA.  When I slew N or S, the Dec changes as you'd expect.  When I slew W or E, the mount moves appropriately, but the RA value is not affected.  What I mean by that is that it does slowly increase, as you'd expect if it were stationary at a point, but the movement in W or E has no effect on this slow increase.  Also, when it says it's tracking, the RA value is still slowly changing, so it doesn't appear to be tracking correctly either.  Bottom line is the you can slew all you want and even supposedly start tracking, and APCC acts like the HA value doesn't change.  In fact, in the status window, HA doesn't change unless you go past the pole in Dec.  Also, as mentioned before, doing any of the park positions just results in the mount parking in place. Oh, and it also says it's counterweight up, even though this is contradicted by the Alt and Az values.  AE fails homing every time.


Re: Mach2 - Pollux not in correct position

Mike Pigney
 

Hi Christopher,

No, I am using the mount only with the AP keypad.

Mike 


Re: 2021 production plans for the 1600GTO?

Karen Christen
 

Hello Brian,
 
In order to be clear for all of our members, I’m going to correct your statement.  You have not purchased a 1600 mount (yet) from OPT, because OPT does not have one to sell you, and neither do they have one on order with us.  We highly discourage their practice of taking full-price deposits for products they don’t have on order.  I am truly sorry that they persist.
 
Our current 1600 mount run is in production now with the first mounts anticipated to ship near the end of this year.  When we begin notifications for this mount run, OPT – along with all of our dealers and customers on our notification list, in order of when they signed up – will have an opportunity to place an order and submit a 50% deposit.  Until then, we have not accepted nor will not accept any money or orders on the 1600 mounts.  We appreciate your patience and I hope this timeline fits with your plan.

Karen Christen
Astro-Physics


Re: Data base corruption

Jack Huerkamp
 

Jeff,

 

George at AP told me if I place the new battery next to the original one and quickly swap them out, the databases will not be lost.  I do not know how quick I need to be.  I guess I will find out as the battery in the keypad has not died, but I want to change it before it does.  BTW the battery for my keypad was $25 plus shipping.

 

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 Jeff B
Sent: Saturday, March 27, 2021 9:59 PM
To: main@ap-gto.groups.io
Subject: Re: [ap-gto] Data base corruption

 

Just had this happen to me as well.  

 

The custom battery is a bit expensive but once in every 10 to 12 years ain't too bad.  Removal and installation of the battery requires care but is straightforward as it reloading the database, though it can take a while.

 

I also went to the .19 firmware version.  Jury is still out on that one.

 

Jeff

 

On Sat, Mar 27, 2021 at 9:41 PM Jack Huerkamp <Mallincamusa@...> wrote:

It is possible that the keypad battery has died.  I understand when it does, the stars and planet databases still work, but catalogs like the Messier and NGC objects get corrupted.  I just ordered a battery for my keypad before it dies.  Once it does, then you have to replace the battery and then reload the DSO databases.

 

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 paulsimonjones
Sent: Friday, March 26, 2021 8:56 PM
To: main@ap-gto.groups.io
Subject: [ap-gto] Data base corruption

 

Starting to reuse my Mach 1 mount after a few years and have found that although the stars and sol data base is ok. The messer database is corrupted - with things like Crab Nebula is in Ursa minor. Any one seen this behavior?

 

Virus-free. www.avg.com


Re: Problem with Mach2 #Mach2GTO #APCC #Absolute_Encoders

Bill Long
 

Then the encoder is fine. Something else is the problem.


From: main@ap-gto.groups.io <main@ap-gto.groups.io> on behalf of David Johnson <dajohns37@...>
Sent: Saturday, March 27, 2021 7:48 PM
To: main@ap-gto.groups.io <main@ap-gto.groups.io>
Subject: Re: [ap-gto] Problem with Mach2 #Mach2GTO #APCC #Absolute_Encoders
 
Looks kind of bluish green.


Re: Data base corruption

Jeff B
 

Just had this happen to me as well.  

The custom battery is a bit expensive but once in every 10 to 12 years ain't too bad.  Removal and installation of the battery requires care but is straightforward as it reloading the database, though it can take a while.

I also went to the .19 firmware version.  Jury is still out on that one.

Jeff

On Sat, Mar 27, 2021 at 9:41 PM Jack Huerkamp <Mallincamusa@...> wrote:

It is possible that the keypad battery has died.  I understand when it does, the stars and planet databases still work, but catalogs like the Messier and NGC objects get corrupted.  I just ordered a battery for my keypad before it dies.  Once it does, then you have to replace the battery and then reload the DSO databases.

 

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 paulsimonjones
Sent: Friday, March 26, 2021 8:56 PM
To: main@ap-gto.groups.io
Subject: [ap-gto] Data base corruption

 

Starting to reuse my Mach 1 mount after a few years and have found that although the stars and sol data base is ok. The messer database is corrupted - with things like Crab Nebula is in Ursa minor. Any one seen this behavior?


Virus-free. www.avg.com


Re: Problem with Mach2 #Mach2GTO #APCC #Absolute_Encoders

David Johnson
 

Looks kind of bluish green.


Re: Mach2 - Pollux not in correct position

Christopher Erickson
 

Let me rephrase that.

Is anything else connected to the mount besides the AP hand controller?

-Christopher Erickson
Observatory engineer
Waikoloa, HI 96738
www.summitkinetics.com
   


On Sat, Mar 27, 2021, 3:54 PM Christopher Erickson <christopher.k.erickson@...> wrote:
The mount is never lost. What are you using to command the mount? That is where the problem is.

-Christopher Erickson
Observatory engineer
Waikoloa, HI 96738
www.summitkinetics.com
   

On Sat, Mar 27, 2021, 3:41 PM Mike Pigney via groups.io <mpigney=yahoo.com@groups.io> wrote:
I'm using my Mach2 with the AP keypad. It works perfectly in every way and goto's are spot on. 

When I command it to go to the star Pollux, it slews to a position approximately 90 degrees to the East of where it should be.

All other objects are spot on so far.

Has anybody else encountered this with the Mach2?

Mike 


Re: Mach2 - Pollux not in correct position

Christopher Erickson
 

The mount is never lost. What are you using to command the mount? That is where the problem is.

-Christopher Erickson
Observatory engineer
Waikoloa, HI 96738
www.summitkinetics.com
   

On Sat, Mar 27, 2021, 3:41 PM Mike Pigney via groups.io <mpigney=yahoo.com@groups.io> wrote:
I'm using my Mach2 with the AP keypad. It works perfectly in every way and goto's are spot on. 

When I command it to go to the star Pollux, it slews to a position approximately 90 degrees to the East of where it should be.

All other objects are spot on so far.

Has anybody else encountered this with the Mach2?

Mike 


Mach2 - Pollux not in correct position

Mike Pigney
 

I'm using my Mach2 with the AP keypad. It works perfectly in every way and goto's are spot on. 

When I command it to go to the star Pollux, it slews to a position approximately 90 degrees to the East of where it should be.

All other objects are spot on so far.

Has anybody else encountered this with the Mach2?

Mike 


Re: Data base corruption

Jack Huerkamp
 

It is possible that the keypad battery has died.  I understand when it does, the stars and planet databases still work, but catalogs like the Messier and NGC objects get corrupted.  I just ordered a battery for my keypad before it dies.  Once it does, then you have to replace the battery and then reload the DSO databases.

 

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 paulsimonjones
Sent: Friday, March 26, 2021 8:56 PM
To: main@ap-gto.groups.io
Subject: [ap-gto] Data base corruption

 

Starting to reuse my Mach 1 mount after a few years and have found that although the stars and sol data base is ok. The messer database is corrupted - with things like Crab Nebula is in Ursa minor. Any one seen this behavior?


Virus-free. www.avg.com


Re: 2021 production plans for the 1600GTO?

Brian McFarland
 

Hello!

I just purchased a 1600 mount w/keypad from OPT the other day. Any forecast as to when they might start shipping?

Thanks very much,

Brian


Mach2 Slew Speed, Power, and Voltage Question #Mach2GTO

John Upton
 

Hi Folks,

   I am a new Mach2 owner and am configuring my setup. I usually run completely off battery power whether imaging / observing from home or at a dark sky site.

   My question is: at what input voltage threshold does the Mach2 switch from 1800X slews to 1200X slews?

   My LiFePO4 battery puts out a fairly constant 13.25 +/- 0.25 volts throughout its discharge curve (as much as I use before recharging). I run my at-mount NUC control computer at 19 volts using a DC-DC converter rated at 10 Amps output. I have three choices for running my Mach2. They are:
  1. Run directly from the battery at ~13.3 volts.
  2. Run through a DC-DC converter at 19 volts. (I already have a spare 19 V 8 A converter.)
  3. Run through a DC-DC Converter at 24 volts. (I already have a spare 24 V 10 A converter.)
   My preference would be to use options #1 or #2. I can use option #3 but that converter is physically larger than the 19 V version. I would like to save a little space and weight. (Both DC-DC converters are "fully potted" have hefty heat sinks. Since I always use the battery system for power, every pound matters for travelling, setting up, and tearing down.)

   If there is a fixed threshold at which the Mach2 / CP5 switches from 1200X to 1800X for maximum slew speeds, I can use whichever option for power is most appropriate. If that threshold is lower than 13 volts (unlikely) I could use just the battery and have full slew speed available. If the threshold is less than 19 volts, either of options #2 or #3 should work fine and allow full speed slews at all times. If the threshold is greater than 19 volts, I am left only with option #3.

   Any information regarding the switching point for slowing down slews would help me decide the path forward. (Of course, it may be that there is no fixed threshold and the CP5 simply regulates slew speed on the fly as it needs.) I realize that I "nit-picking" on having 1200X or 1800X available but like weight, saving time can be important.


John


Data base corruption

paulsimonjones
 

Starting to reuse my Mach 1 mount after a few years and have found that although the stars and sol data base is ok. The messer database is corrupted - with things like Crab Nebula is in Ursa minor. Any one seen this behavior?


Re: Problem with Mach2 #Mach2GTO #APCC #Absolute_Encoders

Bill Long
 

The LED is on the read heads on my 1100. Not sure if the Mach 2 is different. I'd assume not. It's much later now so maybe David can see the RA one soon.


From: main@ap-gto.groups.io <main@ap-gto.groups.io> on behalf of Bill Long <bill@...>
Sent: Saturday, March 27, 2021 5:05 PM
To: main@ap-gto.groups.io <main@ap-gto.groups.io>
Subject: Re: [ap-gto] Problem with Mach2 #Mach2GTO #APCC #Absolute_Encoders
 
Usually one per axis.


From: main@ap-gto.groups.io <main@ap-gto.groups.io> on behalf of Seb@stro <sebastiendore1@...>
Sent: Saturday, March 27, 2021 4:59 PM
To: main@ap-gto.groups.io <main@ap-gto.groups.io>
Subject: Re: [ap-gto] Problem with Mach2 #Mach2GTO #APCC #Absolute_Encoders
 
Out of curiosity, is there one status led for both encoders or one by axis? 

I could find a led under the RA axis (kind of lighting the serial #) but haven’t found any on the Dec axis.

Le 27 mars 2021 à 17:37, Bill Long <bill@...> a écrit :


Yeah sounds like a call to AP is in order. When it gets later check for that LED color.


Re: Problem with Mach2 #Mach2GTO #APCC #Absolute_Encoders

Bill Long
 

Usually one per axis.


From: main@ap-gto.groups.io <main@ap-gto.groups.io> on behalf of Seb@stro <sebastiendore1@...>
Sent: Saturday, March 27, 2021 4:59 PM
To: main@ap-gto.groups.io <main@ap-gto.groups.io>
Subject: Re: [ap-gto] Problem with Mach2 #Mach2GTO #APCC #Absolute_Encoders
 
Out of curiosity, is there one status led for both encoders or one by axis? 

I could find a led under the RA axis (kind of lighting the serial #) but haven’t found any on the Dec axis.

Le 27 mars 2021 à 17:37, Bill Long <bill@...> a écrit :


Yeah sounds like a call to AP is in order. When it gets later check for that LED color.


Re: Problem with Mach2 #Mach2GTO #APCC #Absolute_Encoders

Seb@stro
 

Out of curiosity, is there one status led for both encoders or one by axis? 

I could find a led under the RA axis (kind of lighting the serial #) but haven’t found any on the Dec axis.

Le 27 mars 2021 à 17:37, Bill Long <bill@...> a écrit :


Yeah sounds like a call to AP is in order. When it gets later check for that LED color.


Re: Problem with Mach2 #Mach2GTO #APCC #Absolute_Encoders

Ray Gralak
 

I’ll try that, but it doesn’t explain why I couldn’t do a park with the keypad.
Low voltage or an intermittent power connection to the mount could explain everything.

Double check all the power connections to make sure nothing is loose.

-Ray

-----Original Message-----
From: main@ap-gto.groups.io [mailto:main@ap-gto.groups.io] On Behalf Of David Johnson
Sent: Saturday, March 27, 2021 4:18 PM
To: main@ap-gto.groups.io
Subject: Re: [ap-gto] Problem with Mach2 #Mach2GTO #APCC #Absolute_Encoders

I’ll try that, but it doesn’t explain why I couldn’t do a park with the keypad.


Re: Problem with Mach2 #Mach2GTO #APCC #Absolute_Encoders

David Johnson
 

I’ll try that, but it doesn’t explain why I couldn’t do a park with the keypad.


Re: Problem with Mach2 #Mach2GTO #APCC #Absolute_Encoders

Ray Gralak
 

Hi David,

From your log files it looks like there was a problem communicating with the mount, which is why APCC and/or the driver were not always able to show correct status.

Some things to try:

* If you are using USB through a USB hub, instead, try using a single cable from the computer to the mount.

* Reboot the computer.

* Use a different connection (e.g. Ethernet)

-Ray

-----Original Message-----
From: main@ap-gto.groups.io [mailto:main@ap-gto.groups.io] On Behalf Of David Johnson
Sent: Saturday, March 27, 2021 8:31 AM
To: main@ap-gto.groups.io
Subject: [ap-gto] Problem with Mach2 #Mach2GTO #APCC #Absolute_Encoders

I have a serious problem with my mount. I imaged all last night, using APPM, with no apparent issues. However,
when I tried to do a Park 3 this morning, the mount acts like it is trying to Park, but it doesn't slew and apparently
parks in place. I have tried shutting down the computer and mount numerous times with no change. The mount will
connect to APCC, initialize, and manually slew using the arrows, but it won't do much else. It will not park in any of
the standard positions, acting as I described above, always parking in place. Also, if I try to do a Home on the AE
tab, it says that homing has failed. It's obvious the mount doesn't know where it's pointing, because it says it's at a
negative altitude, when the mount is clearly not. Also, it says it's CW up, when it's clearly not. The following may or
may not be pertinent, but I figure it's better to give too much information than not enough to avoid back and forth.
The "ENC" button in the Telescope Position area is not lit., I'm getting time-out Comm error, although the fact that I
am able to manually slew using the arrows shows that there is at least some communication between the mount
and computer. I'll make a zipped log file available as soon as I can get it transferred.

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