Date   

Re: APCC GPS Error

Dale Ghent
 


The standard MNEA bit rate is 4800. My own ublox7 works fine at that. 

/dale 

On Jan 4, 2021, at 5:15 AM, David Fabrizio via groups.io <DavFab@...> wrote:

Ray,

 Thank you. I’ll try a few different baud rates and see what happens.


On Jan 3, 2021, at 6:26 PM, David Fabrizio via groups.io <DavFab@...> wrote:



All,

 I am trying to connect a U-Blox7 GPS to v1.8.8.0 of APCC and I get this error message:

UpdateLocation. Index and length must refer to a location within the string. Parameter name: Length.

 The gps is on com7. Any ideas?

Thank you

Dave Fabrizio


Re: Additional Options for storing the RAPAS,CP and Counterweights

Harley Davidson
 

John

HELLO, yes those Silver Metallic Sharpie's work great on dark colored surfaces. Like you said it will take a couple coats to see well. And if you need to change the name I have used lacquer thinner on a rag to clean the old text off. Then I'll use a fan to help dry the cloth surface and get rid of the lacquer smell.

So glad to hear the tree didn't destroy the mount inside your SKB case. That is truly amazing!

tony

On 1/3/2021 11:34 PM, John A. Sillasen wrote:
I also purchased the BUBM series of soft sided cases from Amazon after Tony's (Harley Davidson- aka starastronomer on YouTube) review video. What came to be hard was labeling the cases as there's no name tag sleeve anywhere. One reviewer suggests the clear top version and a label maker for that one.

My wife solved my problem with the black BUBM cases, Sharpie's Silver Metallic Permanent marker.  It shows up well - especially after a second coat after the first completely dried.  Photo attached so you can see the results. 

I picked up two packs of these 3 packs. Two for Keypads (1100 & Mach 1), one for CP4 for 1100, the CP4 for the Mach 1 stays on the Eagle Pier all the time so I don't need it for that.  I use the other 2 small ones for cable sets.  One complete CABPP6 & the other for a 12v cable for CP4. The spare middle one holds USB, Ethernet and Straight Thru Serial cable. 

All Silver Metallic Sharpie labeled accordingly. 

As for the Rigid cases. As someone who's Telescope Shed was destroyed by a felled tree, my one Rigid case that used to hold a spare Feathertouch focuser for scopes to swap as needed. And a few other things in the past.

It was completely destroyed. 

I'm the guy who ordered the huge SKB case from MyCaseBuilder.com for the 1100 with 16" DOVELM162,  the CP4-GTO, Keypad & Counterweight shaft.  It had its handle snapped off and one corner bent with the side case snap bent out of shape.  That corner held the CP4 and it tests and upgrades well.

I don't wish to replace the exact SKB case but man is it tough. I'll go with a smaller case that holds only  the 1100 with a  DOVEDV10 but without the CP4,  shaft or Keypad. Sure the Rigid cases are built well but they are not SKB or Pelican quality. That monster case is a two person carry to lift into a van.  



John A. Sillasen




Re: APCC GPS Error

David Fabrizio
 

Ray,

 Thank you. I’ll try a few different baud rates and see what happens.


On Jan 3, 2021, at 6:26 PM, David Fabrizio via groups.io <DavFab@...> wrote:



All,

 I am trying to connect a U-Blox7 GPS to v1.8.8.0 of APCC and I get this error message:

UpdateLocation. Index and length must refer to a location within the string. Parameter name: Length.

 The gps is on com7. Any ideas?

Thank you

Dave Fabrizio


Re: Lost communications with mount

weihaowang
 

Ouch!  That's the power adapter that came with the mount.  I will see if I can find another one.

--

Homepage:

http://www.asiaa.sinica.edu.tw/~whwang/

Astrobin gallery:
http://www.astrobin.com/users/whwang/


Re: Additional Options for storing the RAPAS,CP and Counterweights

John A. Sillasen
 

I also purchased the BUBM series of soft sided cases from Amazon after Tony's (Harley Davidson- aka starastronomer on YouTube) review video. What came to be hard was labeling the cases as there's no name tag sleeve anywhere. One reviewer suggests the clear top version and a label maker for that one.

My wife solved my problem with the black BUBM cases, Sharpie's Silver Metallic Permanent marker.  It shows up well - especially after a second coat after the first completely dried.  Photo attached so you can see the results. 

I picked up two packs of these 3 packs. Two for Keypads (1100 & Mach 1), one for CP4 for 1100, the CP4 for the Mach 1 stays on the Eagle Pier all the time so I don't need it for that.  I use the other 2 small ones for cable sets.  One complete CABPP6 & the other for a 12v cable for CP4. The spare middle one holds USB, Ethernet and Straight Thru Serial cable. 

All Silver Metallic Sharpie labeled accordingly. 

As for the Rigid cases. As someone who's Telescope Shed was destroyed by a felled tree, my one Rigid case that used to hold a spare Feathertouch focuser for scopes to swap as needed. And a few other things in the past.

It was completely destroyed. 

I'm the guy who ordered the huge SKB case from MyCaseBuilder.com for the 1100 with 16" DOVELM162,  the CP4-GTO, Keypad & Counterweight shaft.  It had its handle snapped off and one corner bent with the side case snap bent out of shape.  That corner held the CP4 and it tests and upgrades well.

I don't wish to replace the exact SKB case but man is it tough. I'll go with a smaller case that holds only  the 1100 with a  DOVEDV10 but without the CP4,  shaft or Keypad. Sure the Rigid cases are built well but they are not SKB or Pelican quality. That monster case is a two person carry to lift into a van.  



John A. Sillasen



Re: Lost communications with mount

Ray Gralak
 

Hi Wei-Hao,

The mount is seeing many intermittent "Low Power" issues. I counted 17 in the logs you sent me.

C:\Users\Ray\Downloads\ApccZip-Academia_Sinica-2021-01-04-104109\APCC-2020-12-30-143202.txt (2 hits)
Line 2437: 0002437 2020-12-30 14:33:51.961: Error, Command Thread, Low Power Detected
Line 29056: 0029056 2020-12-30 14:41:00.318: Error, Command Thread, Low Power Detected
C:\Users\Ray\Downloads\ApccZip-Academia_Sinica-2021-01-04-104109\APCC-2020-12-31-111617.txt (2 hits)
Line 255: 0000255 2020-12-31 11:16:27.870: Error, Command Thread, Low Power Detected
Line 785: 0000785 2020-12-31 11:16:36.918: Error, Command Thread, Low Power Detected
C:\Users\Ray\Downloads\ApccZip-Academia_Sinica-2021-01-04-104109\APCC-2020-12-31-123552.txt (1 hit)
Line 17186: 0017186 2020-12-31 12:41:59.422: Error, Command Thread, Low Power Detected
C:\Users\Ray\Downloads\ApccZip-Academia_Sinica-2021-01-04-104109\APCC-2021-01-01-132357.txt (1 hit)
Line 14369: 0014369 2021-01-01 13:29:08.788: Error, Command Thread, Low Power Detected
C:\Users\Ray\Downloads\ApccZip-Academia_Sinica-2021-01-04-104109\APCC-2021-01-01-133412.txt (1 hit)
Line 125411: 0125411 2021-01-01 14:18:05.031: Error, Command Thread, Low Power Detected
C:\Users\Ray\Downloads\ApccZip-Academia_Sinica-2021-01-04-104109\APCC-2021-01-01-144212.txt (1 hit)
Line 177: 0000177 2021-01-01 14:42:30.441: Error, Command Thread, Low Power Detected
C:\Users\Ray\Downloads\ApccZip-Academia_Sinica-2021-01-04-104109\APCC-2021-01-01-144500.txt (2 hits)
Line 12710: 0012710 2021-01-01 14:49:36.618: Error, Command Thread, Low Power Detected
Line 71121: 0071121 2021-01-01 15:09:58.207: Error, Command Thread, Low Power Detected
C:\Users\Ray\Downloads\ApccZip-Academia_Sinica-2021-01-04-104109\APCC-2021-01-01-151729.txt (3 hits)
Line 2123: 0002123 2021-01-01 15:18:19.377: Error, Command Thread, Low Power Detected
Line 2189: 0002189 2021-01-01 15:18:21.118: Error, Command Thread, Low Power Detected
Line 5289: 0005289 2021-01-01 15:19:22.102: Error, Command Thread, Low Power Detected
C:\Users\Ray\Downloads\ApccZip-Academia_Sinica-2021-01-04-104109\APCC-2021-01-01-152631.txt (4 hits)
Line 9820: 0009820 2021-01-01 15:30:02.093: Error, Command Thread, Low Power Detected
Line 14802: 0014802 2021-01-01 15:31:46.256: Error, Command Thread, Low Power Detected
Line 24381: 0024381 2021-01-01 15:35:06.401: Error, Command Thread, Low Power Detected
Line 25570: 0025570 2021-01-01 15:35:31.440: Error, Command Thread, Low Power Detected

-Ray Gralak
Author of PEMPro
Author of APCC (Astro-Physics Command Center): https://www.astro-physics.com/apcc-pro
Author of Astro-Physics V2 ASCOM Driver: https://www.siriusimaging.com/apdriver

-----Original Message-----
From: main@ap-gto.groups.io [mailto:main@ap-gto.groups.io] On Behalf Of weihaowang
Sent: Sunday, January 3, 2021 8:07 PM
To: main@ap-gto.groups.io
Subject: Re: [ap-gto] Lost communications with mount

Hi Ray,

This is the link to the zipped APCC log:
https://www.dropbox.com/s/nj83ukryf49r9a8/ApccZip-Academia_Sinica-2021-01-04-104109.zip?dl=0

I had updated the timeout and crosshair update rate according to your suggestions. Nothing changed.
The disconnection persists.

Regarding ASCOM driver, I do find that the mount continues to track after the disconnection message
from TheSky. This is based on the observation of the location of the RA park marks. It continues to
move (very slowly, of course). However, I can identify two click sounds in my last trial. The first one
comes a few seconds before the TheSky error message. So I believe it signals the parking. Then after
a while, perhaps half minute, a second click sound shows up (without my clicking off the TheSky
warning window and without any attempts to reconnect in TheSky). I believe this signals unparking
and the start of tracking. Then quite many minutes later, I saw that the RA park marks have moved a bit.
So, I think what happened is that the mount parked itself for about half minutes. Although it started to
track again, this short period of parking is enough to interrupt the imaging or observations. This is
found when the mount was connected via USB.

I found another interesting thing when I connected to Mach2 with wifi. Perhaps because of the slower
response of wifi, sometimes TheSky doesn't show an error message at all, even though the mount had
parked and re-unparked. Maybe it is too fast from park to unpark, TheSky did not have time to
realize the disconnection under wifi.

Cheers,
Wei-Hao


--


Homepage:

http://www.asiaa.sinica.edu.tw/~whwang/

Astrobin gallery:
http://www.astrobin.com/users/whwang/


Re: Lost communications with mount

weihaowang
 

Hi Ray,

This is the link to the zipped APCC log:
https://www.dropbox.com/s/nj83ukryf49r9a8/ApccZip-Academia_Sinica-2021-01-04-104109.zip?dl=0

I had updated the timeout and crosshair update rate according to your suggestions.  Nothing changed.
The disconnection persists.

Regarding ASCOM driver, I do find that the mount continues to track after the disconnection message
from TheSky.  This is based on the observation of the location of the RA park marks.  It continues to
move (very slowly, of course).  However, I can identify two click sounds in my last trial.  The first one
comes a few seconds before the TheSky error message.  So I believe it signals the parking.  Then after
a while, perhaps half minute, a second click sound shows up (without my clicking off the TheSky 
warning window and without any attempts to reconnect in TheSky).  I believe this signals unparking
and the start of tracking.  Then quite many minutes later, I saw that the RA park marks have moved a bit.
So, I think what happened is that the mount parked itself for about half minutes.  Although it started to
track again, this short period of parking is enough to interrupt the imaging or observations.  This is 
found when the mount was connected via USB.

I found another interesting thing when I connected to Mach2 with wifi. Perhaps because of the slower
response of wifi, sometimes TheSky doesn't show an error message at all, even though the mount had
parked and re-unparked.  Maybe it is too fast from park to unpark, TheSky did not have time to 
realize the disconnection under wifi.

Cheers,
Wei-Hao


--

Homepage:

http://www.asiaa.sinica.edu.tw/~whwang/

Astrobin gallery:
http://www.astrobin.com/users/whwang/


Re: APCC GPS Error

Ray Gralak
 

Hi David,

UpdateLocation. Index and length must refer to a location within the string. Parameter name: Length.
That means there was an error parsing the response from the device. It could be that the data received was corrupted, or in an unrecognized format. If the error persists, it could be device's response is not in a standard format, or maybe the wrong baud rate is selected.

-Ray Gralak
Author of PEMPro
Author of APCC (Astro-Physics Command Center): https://www.astro-physics.com/apcc-pro
Author of Astro-Physics V2 ASCOM Driver: https://www.siriusimaging.com/apdriver


-----Original Message-----
From: main@ap-gto.groups.io [mailto:main@ap-gto.groups.io] On Behalf Of David Fabrizio via groups.io
Sent: Sunday, January 3, 2021 5:26 PM
To: main@ap-gto.groups.io
Subject: [ap-gto] APCC GPS Error

All,

I am trying to connect a U-Blox7 GPS to v1.8.8.0 of APCC and I get this error message:

UpdateLocation. Index and length must refer to a location within the string. Parameter name: Length.

The gps is on com7. Any ideas?



Thank you

Dave Fabrizio


Re: Hanging case for GTOCP4?

Don Anderson
 

I like the gearbox noise!

Don Anderson


On Sunday, January 3, 2021, 12:04:45 p.m. MST, Roland Christen via groups.io <chris1011@...> wrote:



Kinda sounds like true class A power amplifier operation in my Hi-Fi hobby.  The output devices are always "on", at full current.  They run at their hottest with no signal and need a ton of heat sinks and you never enclose them.
I think you are mixing apples and oranges. Massive heatsinks are not required on our CP controllers.

Microstepper servos need current to hold position, otherwise the rotor falls back to one of the magnetic positions. All AC servo motors have this requirement. DC servos do not need to hold position and current falls to zero when not moving. Dc servos also have large gear reductions so they can operate at very low current levels and still produce plenty of torque at the worm shaft. Typical gear reduction of a Dc servo is around 60:1, whereas AC servos such as used on the Mach2 have reduction ratio of 2:1 or thereabouts.

Dc servos require very expensive gearboxes and expensive DC servomotors, otherwise the periodic error gets ragged and massive. They also make audible noise that people don't like. For the Mach2 we decided to use AC servos with belt drive so that we could apply the savings to add the very expensive Renishaw absolute encoders. With DC, the cost would have put us out of contention with competitive mounts. Plus people would have ragged about the slewing noise.

Rolando


-----Original Message-----
From: Jeff B <mnebula946@...>
To: main@ap-gto.groups.io
Sent: Sun, Jan 3, 2021 12:04 pm
Subject: Re: [ap-gto] Hanging case for GTOCP4?

Kinda sounds like true class A power amplifier operation in my Hi-Fi hobby.  The output devices are always "on", at full current.  They run at their hottest with no signal and need a ton of heat sinks and you never enclose them.

Ignorant but curious, since absolute encoders know where they are all the time, can a model be built by manually pointing the scope, without any goto commands?

Jeff

On Sun, Jan 3, 2021 at 12:23 PM Roland Christen via groups.io <chris1011=aol.com@groups.io> wrote:
On the CP5 controllers I would advise against putting them inside a cloth bag. The CP3 and CP4 are ok because they do not produce very much current for the two servo motors under normal tracking conditions. The CP5 sends full current to both stepper servos all the time, even when they are not moving, so the drivers are at full power and produce more heat. The case dissipates the heat to the surrounding air just fine, but if they are inside a cloth bag, they will not have any air circulation.

Roland Christen
Astro-Physics Inc.


-----Original Message-----
From: Dale Ghent <daleg@...>
To: main@ap-gto.groups.io
Sent: Sun, Jan 3, 2021 10:58 am
Subject: Re: [ap-gto] Hanging case for GTOCP4?

With the mounting bracket, you only have to losen two thumb screws and tip the unit forward to remove it, and the opposite to install it into the bracket. It’s quite quick to do and doesn’t require any tools. The thumb screws are similar to if not the same as the ones which secure the sliding access panels on your Mach1. 

/dale

On Jan 3, 2021, at 10:46, Patrick Spencer <patrick.spencer2@...> wrote:

Hi everyone,

I recently upgraded from a CP3 to a CP4 for my Mach1. The only thing I miss about the CP3 is the neat hanging case, which made it easy to "grab and go" and allowed me to hang the controller from a knob at the base of the mount. Unfortunately, the CP4 is too large to fit in the CP3 case. I know there's a mounting bracket option, but I like being able to quickly disconnect the control box and take it inside when I'm finished imaging.

There are a lot of clever folks in this group, so I was wondering if anyone has come up with a similar hanging pouch/bag solution for the CP4?

Thanks,

Patrick Spencer

--
Roland Christen
Astro-Physics

--
Roland Christen
Astro-Physics


Re: Hanging case for GTOCP4?

Jeff B
 

Great and informative explanations Roland and thanks.

Jeff

On Sun, Jan 3, 2021 at 2:09 PM Roland Christen via groups.io <chris1011=aol.com@groups.io> wrote:
Oh, and one more thing, at normal tracking, the current consumption is 0.7 amps at 24 volts, so just under 17 watts being sent to the CP controller, of which most goes directly to the motors and around 3 watts is being dissipated in the CP5 control box. So no large heatsinks required, just a bit of air circulation on the case.

Rolando

-----Original Message-----
From: Roland Christen via groups.io <chris1011=aol.com@groups.io>
To: main@ap-gto.groups.io <main@ap-gto.groups.io>
Sent: Sun, Jan 3, 2021 1:04 pm
Subject: Re: [ap-gto] Hanging case for GTOCP4?


Kinda sounds like true class A power amplifier operation in my Hi-Fi hobby.  The output devices are always "on", at full current.  They run at their hottest with no signal and need a ton of heat sinks and you never enclose them.
I think you are mixing apples and oranges. Massive heatsinks are not required on our CP controllers.

Microstepper servos need current to hold position, otherwise the rotor falls back to one of the magnetic positions. All AC servo motors have this requirement. DC servos do not need to hold position and current falls to zero when not moving. Dc servos also have large gear reductions so they can operate at very low current levels and still produce plenty of torque at the worm shaft. Typical gear reduction of a Dc servo is around 60:1, whereas AC servos such as used on the Mach2 have reduction ratio of 2:1 or thereabouts.

Dc servos require very expensive gearboxes and expensive DC servomotors, otherwise the periodic error gets ragged and massive. They also make audible noise that people don't like. For the Mach2 we decided to use AC servos with belt drive so that we could apply the savings to add the very expensive Renishaw absolute encoders. With DC, the cost would have put us out of contention with competitive mounts. Plus people would have ragged about the slewing noise.

Rolando


-----Original Message-----
From: Jeff B <mnebula946@...>
To: main@ap-gto.groups.io
Sent: Sun, Jan 3, 2021 12:04 pm
Subject: Re: [ap-gto] Hanging case for GTOCP4?

Kinda sounds like true class A power amplifier operation in my Hi-Fi hobby.  The output devices are always "on", at full current.  They run at their hottest with no signal and need a ton of heat sinks and you never enclose them.

Ignorant but curious, since absolute encoders know where they are all the time, can a model be built by manually pointing the scope, without any goto commands?

Jeff

On Sun, Jan 3, 2021 at 12:23 PM Roland Christen via groups.io <chris1011=aol.com@groups.io> wrote:
On the CP5 controllers I would advise against putting them inside a cloth bag. The CP3 and CP4 are ok because they do not produce very much current for the two servo motors under normal tracking conditions. The CP5 sends full current to both stepper servos all the time, even when they are not moving, so the drivers are at full power and produce more heat. The case dissipates the heat to the surrounding air just fine, but if they are inside a cloth bag, they will not have any air circulation.

Roland Christen
Astro-Physics Inc.


-----Original Message-----
From: Dale Ghent <daleg@...>
To: main@ap-gto.groups.io
Sent: Sun, Jan 3, 2021 10:58 am
Subject: Re: [ap-gto] Hanging case for GTOCP4?

With the mounting bracket, you only have to losen two thumb screws and tip the unit forward to remove it, and the opposite to install it into the bracket. It’s quite quick to do and doesn’t require any tools. The thumb screws are similar to if not the same as the ones which secure the sliding access panels on your Mach1. 

/dale

On Jan 3, 2021, at 10:46, Patrick Spencer <patrick.spencer2@...> wrote:

Hi everyone,

I recently upgraded from a CP3 to a CP4 for my Mach1. The only thing I miss about the CP3 is the neat hanging case, which made it easy to "grab and go" and allowed me to hang the controller from a knob at the base of the mount. Unfortunately, the CP4 is too large to fit in the CP3 case. I know there's a mounting bracket option, but I like being able to quickly disconnect the control box and take it inside when I'm finished imaging.

There are a lot of clever folks in this group, so I was wondering if anyone has come up with a similar hanging pouch/bag solution for the CP4?

Thanks,

Patrick Spencer

--
Roland Christen
Astro-Physics

--
Roland Christen
Astro-Physics

--
Roland Christen
Astro-Physics


APCC GPS Error

David Fabrizio
 

All,

 I am trying to connect a U-Blox7 GPS to v1.8.8.0 of APCC and I get this error message:

UpdateLocation. Index and length must refer to a location within the string. Parameter name: Length.

 The gps is on com7. Any ideas?

Thank you

Dave Fabrizio


Re: Hanging case for GTOCP4?

Roland Christen
 

Oh, and one more thing, at normal tracking, the current consumption is 0.7 amps at 24 volts, so just under 17 watts being sent to the CP controller, of which most goes directly to the motors and around 3 watts is being dissipated in the CP5 control box. So no large heatsinks required, just a bit of air circulation on the case.

Rolando

-----Original Message-----
From: Roland Christen via groups.io <chris1011@...>
To: main@ap-gto.groups.io <main@ap-gto.groups.io>
Sent: Sun, Jan 3, 2021 1:04 pm
Subject: Re: [ap-gto] Hanging case for GTOCP4?


Kinda sounds like true class A power amplifier operation in my Hi-Fi hobby.  The output devices are always "on", at full current.  They run at their hottest with no signal and need a ton of heat sinks and you never enclose them.
I think you are mixing apples and oranges. Massive heatsinks are not required on our CP controllers.

Microstepper servos need current to hold position, otherwise the rotor falls back to one of the magnetic positions. All AC servo motors have this requirement. DC servos do not need to hold position and current falls to zero when not moving. Dc servos also have large gear reductions so they can operate at very low current levels and still produce plenty of torque at the worm shaft. Typical gear reduction of a Dc servo is around 60:1, whereas AC servos such as used on the Mach2 have reduction ratio of 2:1 or thereabouts.

Dc servos require very expensive gearboxes and expensive DC servomotors, otherwise the periodic error gets ragged and massive. They also make audible noise that people don't like. For the Mach2 we decided to use AC servos with belt drive so that we could apply the savings to add the very expensive Renishaw absolute encoders. With DC, the cost would have put us out of contention with competitive mounts. Plus people would have ragged about the slewing noise.

Rolando


-----Original Message-----
From: Jeff B <mnebula946@...>
To: main@ap-gto.groups.io
Sent: Sun, Jan 3, 2021 12:04 pm
Subject: Re: [ap-gto] Hanging case for GTOCP4?

Kinda sounds like true class A power amplifier operation in my Hi-Fi hobby.  The output devices are always "on", at full current.  They run at their hottest with no signal and need a ton of heat sinks and you never enclose them.

Ignorant but curious, since absolute encoders know where they are all the time, can a model be built by manually pointing the scope, without any goto commands?

Jeff

On Sun, Jan 3, 2021 at 12:23 PM Roland Christen via groups.io <chris1011=aol.com@groups.io> wrote:
On the CP5 controllers I would advise against putting them inside a cloth bag. The CP3 and CP4 are ok because they do not produce very much current for the two servo motors under normal tracking conditions. The CP5 sends full current to both stepper servos all the time, even when they are not moving, so the drivers are at full power and produce more heat. The case dissipates the heat to the surrounding air just fine, but if they are inside a cloth bag, they will not have any air circulation.

Roland Christen
Astro-Physics Inc.


-----Original Message-----
From: Dale Ghent <daleg@...>
To: main@ap-gto.groups.io
Sent: Sun, Jan 3, 2021 10:58 am
Subject: Re: [ap-gto] Hanging case for GTOCP4?

With the mounting bracket, you only have to losen two thumb screws and tip the unit forward to remove it, and the opposite to install it into the bracket. It’s quite quick to do and doesn’t require any tools. The thumb screws are similar to if not the same as the ones which secure the sliding access panels on your Mach1. 

/dale

On Jan 3, 2021, at 10:46, Patrick Spencer <patrick.spencer2@...> wrote:

Hi everyone,

I recently upgraded from a CP3 to a CP4 for my Mach1. The only thing I miss about the CP3 is the neat hanging case, which made it easy to "grab and go" and allowed me to hang the controller from a knob at the base of the mount. Unfortunately, the CP4 is too large to fit in the CP3 case. I know there's a mounting bracket option, but I like being able to quickly disconnect the control box and take it inside when I'm finished imaging.

There are a lot of clever folks in this group, so I was wondering if anyone has come up with a similar hanging pouch/bag solution for the CP4?

Thanks,

Patrick Spencer

--
Roland Christen
Astro-Physics

--
Roland Christen
Astro-Physics

--
Roland Christen
Astro-Physics


Re: Hanging case for GTOCP4?

Roland Christen
 


Kinda sounds like true class A power amplifier operation in my Hi-Fi hobby.  The output devices are always "on", at full current.  They run at their hottest with no signal and need a ton of heat sinks and you never enclose them.
I think you are mixing apples and oranges. Massive heatsinks are not required on our CP controllers.

Microstepper servos need current to hold position, otherwise the rotor falls back to one of the magnetic positions. All AC servo motors have this requirement. DC servos do not need to hold position and current falls to zero when not moving. Dc servos also have large gear reductions so they can operate at very low current levels and still produce plenty of torque at the worm shaft. Typical gear reduction of a Dc servo is around 60:1, whereas AC servos such as used on the Mach2 have reduction ratio of 2:1 or thereabouts.

Dc servos require very expensive gearboxes and expensive DC servomotors, otherwise the periodic error gets ragged and massive. They also make audible noise that people don't like. For the Mach2 we decided to use AC servos with belt drive so that we could apply the savings to add the very expensive Renishaw absolute encoders. With DC, the cost would have put us out of contention with competitive mounts. Plus people would have ragged about the slewing noise.

Rolando


-----Original Message-----
From: Jeff B <mnebula946@...>
To: main@ap-gto.groups.io
Sent: Sun, Jan 3, 2021 12:04 pm
Subject: Re: [ap-gto] Hanging case for GTOCP4?

Kinda sounds like true class A power amplifier operation in my Hi-Fi hobby.  The output devices are always "on", at full current.  They run at their hottest with no signal and need a ton of heat sinks and you never enclose them.

Ignorant but curious, since absolute encoders know where they are all the time, can a model be built by manually pointing the scope, without any goto commands?

Jeff

On Sun, Jan 3, 2021 at 12:23 PM Roland Christen via groups.io <chris1011=aol.com@groups.io> wrote:
On the CP5 controllers I would advise against putting them inside a cloth bag. The CP3 and CP4 are ok because they do not produce very much current for the two servo motors under normal tracking conditions. The CP5 sends full current to both stepper servos all the time, even when they are not moving, so the drivers are at full power and produce more heat. The case dissipates the heat to the surrounding air just fine, but if they are inside a cloth bag, they will not have any air circulation.

Roland Christen
Astro-Physics Inc.


-----Original Message-----
From: Dale Ghent <daleg@...>
To: main@ap-gto.groups.io
Sent: Sun, Jan 3, 2021 10:58 am
Subject: Re: [ap-gto] Hanging case for GTOCP4?

With the mounting bracket, you only have to losen two thumb screws and tip the unit forward to remove it, and the opposite to install it into the bracket. It’s quite quick to do and doesn’t require any tools. The thumb screws are similar to if not the same as the ones which secure the sliding access panels on your Mach1. 

/dale

On Jan 3, 2021, at 10:46, Patrick Spencer <patrick.spencer2@...> wrote:

Hi everyone,

I recently upgraded from a CP3 to a CP4 for my Mach1. The only thing I miss about the CP3 is the neat hanging case, which made it easy to "grab and go" and allowed me to hang the controller from a knob at the base of the mount. Unfortunately, the CP4 is too large to fit in the CP3 case. I know there's a mounting bracket option, but I like being able to quickly disconnect the control box and take it inside when I'm finished imaging.

There are a lot of clever folks in this group, so I was wondering if anyone has come up with a similar hanging pouch/bag solution for the CP4?

Thanks,

Patrick Spencer

--
Roland Christen
Astro-Physics

--
Roland Christen
Astro-Physics


Re: Hanging case for GTOCP4?

Elenillor
 

Also curious about a hanging case for the CP4. I have the mounting bracket but liked the flexibility of the hanging case for the CP3 before upgrading to the CP4. 

Speaking of suggested bags, thanks to the person who suggested the AKONA Dive Weight Bags.  I got two for my counter weights over the holidays. They work perfectly for the 6" diameter weights. I put 37 lbs in each bag.

John


Re: Hanging case for GTOCP4?

Jeff B
 

Kinda sounds like true class A power amplifier operation in my Hi-Fi hobby.  The output devices are always "on", at full current.  They run at their hottest with no signal and need a ton of heat sinks and you never enclose them.

Ignorant but curious, since absolute encoders know where they are all the time, can a model be built by manually pointing the scope, without any goto commands?

Jeff

On Sun, Jan 3, 2021 at 12:23 PM Roland Christen via groups.io <chris1011=aol.com@groups.io> wrote:
On the CP5 controllers I would advise against putting them inside a cloth bag. The CP3 and CP4 are ok because they do not produce very much current for the two servo motors under normal tracking conditions. The CP5 sends full current to both stepper servos all the time, even when they are not moving, so the drivers are at full power and produce more heat. The case dissipates the heat to the surrounding air just fine, but if they are inside a cloth bag, they will not have any air circulation.

Roland Christen
Astro-Physics Inc.


-----Original Message-----
From: Dale Ghent <daleg@...>
To: main@ap-gto.groups.io
Sent: Sun, Jan 3, 2021 10:58 am
Subject: Re: [ap-gto] Hanging case for GTOCP4?

With the mounting bracket, you only have to losen two thumb screws and tip the unit forward to remove it, and the opposite to install it into the bracket. It’s quite quick to do and doesn’t require any tools. The thumb screws are similar to if not the same as the ones which secure the sliding access panels on your Mach1. 

/dale

On Jan 3, 2021, at 10:46, Patrick Spencer <patrick.spencer2@...> wrote:

Hi everyone,

I recently upgraded from a CP3 to a CP4 for my Mach1. The only thing I miss about the CP3 is the neat hanging case, which made it easy to "grab and go" and allowed me to hang the controller from a knob at the base of the mount. Unfortunately, the CP4 is too large to fit in the CP3 case. I know there's a mounting bracket option, but I like being able to quickly disconnect the control box and take it inside when I'm finished imaging.

There are a lot of clever folks in this group, so I was wondering if anyone has come up with a similar hanging pouch/bag solution for the CP4?

Thanks,

Patrick Spencer

--
Roland Christen
Astro-Physics


Re: Hanging case for GTOCP4?

Roland Christen
 

On the CP5 controllers I would advise against putting them inside a cloth bag. The CP3 and CP4 are ok because they do not produce very much current for the two servo motors under normal tracking conditions. The CP5 sends full current to both stepper servos all the time, even when they are not moving, so the drivers are at full power and produce more heat. The case dissipates the heat to the surrounding air just fine, but if they are inside a cloth bag, they will not have any air circulation.

Roland Christen
Astro-Physics Inc.


-----Original Message-----
From: Dale Ghent <daleg@...>
To: main@ap-gto.groups.io
Sent: Sun, Jan 3, 2021 10:58 am
Subject: Re: [ap-gto] Hanging case for GTOCP4?

With the mounting bracket, you only have to losen two thumb screws and tip the unit forward to remove it, and the opposite to install it into the bracket. It’s quite quick to do and doesn’t require any tools. The thumb screws are similar to if not the same as the ones which secure the sliding access panels on your Mach1. 

/dale

On Jan 3, 2021, at 10:46, Patrick Spencer <patrick.spencer2@...> wrote:

Hi everyone,

I recently upgraded from a CP3 to a CP4 for my Mach1. The only thing I miss about the CP3 is the neat hanging case, which made it easy to "grab and go" and allowed me to hang the controller from a knob at the base of the mount. Unfortunately, the CP4 is too large to fit in the CP3 case. I know there's a mounting bracket option, but I like being able to quickly disconnect the control box and take it inside when I'm finished imaging.

There are a lot of clever folks in this group, so I was wondering if anyone has come up with a similar hanging pouch/bag solution for the CP4?

Thanks,

Patrick Spencer

--
Roland Christen
Astro-Physics


Re: Hanging case for GTOCP4?

Dale Ghent
 

With the mounting bracket, you only have to losen two thumb screws and tip the unit forward to remove it, and the opposite to install it into the bracket. It’s quite quick to do and doesn’t require any tools. The thumb screws are similar to if not the same as the ones which secure the sliding access panels on your Mach1. 

/dale

On Jan 3, 2021, at 10:46, Patrick Spencer <patrick.spencer2@...> wrote:

Hi everyone,

I recently upgraded from a CP3 to a CP4 for my Mach1. The only thing I miss about the CP3 is the neat hanging case, which made it easy to "grab and go" and allowed me to hang the controller from a knob at the base of the mount. Unfortunately, the CP4 is too large to fit in the CP3 case. I know there's a mounting bracket option, but I like being able to quickly disconnect the control box and take it inside when I'm finished imaging.

There are a lot of clever folks in this group, so I was wondering if anyone has come up with a similar hanging pouch/bag solution for the CP4?

Thanks,

Patrick Spencer


Re: Mach2 #Mach2GTO

eckhard.voelcker@...
 

On Sun, Jan 3, 2021 at 04:58 PM, Allen Ruckle wrote:
The port setting needs to be set to #23,
Thank you, Allen. I did not know that the communication was Telnet based. It works with port #23. 


Hanging case for GTOCP4?

Patrick Spencer
 

Hi everyone,

I recently upgraded from a CP3 to a CP4 for my Mach1. The only thing I miss about the CP3 is the neat hanging case, which made it easy to "grab and go" and allowed me to hang the controller from a knob at the base of the mount. Unfortunately, the CP4 is too large to fit in the CP3 case. I know there's a mounting bracket option, but I like being able to quickly disconnect the control box and take it inside when I'm finished imaging.

There are a lot of clever folks in this group, so I was wondering if anyone has come up with a similar hanging pouch/bag solution for the CP4?

Thanks,

Patrick Spencer


Re: Mach2 #Mach2GTO

Allen Ruckle
 

Eckhard,
        You did not mention what port setting you selected.

The port setting needs to be set to #23,   Also there are several people that have commented,  sky safari can be connected in the beginning of a session but if the connection does not reliably reconnect if the connection is interrupted.  

 There is a thread a while back that Astro Physics is working with the Sky Safari people to properly support the CP5, and the next update will include those changes.  It wasn’t clear if it would be in an update to V6 or when the next version, Sky Safari 7.

I’m hoping it will be soon.  In my opinion Sky Safari is the nicest desktop planetarium app available. 

aruckle

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