Date   

Guider exposure times?

Mike Shade
 

Curious as to what people have for guider exposures for various systems.  Was having some issues guiding my 1600/CDK 17/Maxim 5.18/STL6303E (guiding with camera) in that the stars were not always round...almost but not quite, just a few pixels but enough to oblong the stars.  Always had somewhat longer guide exposures (7"-10") to try and even out seeing variations (which can be quite large with a 17" telescope).  The system can go unguided with reasonably round stars for the 382" worm cycle near zenith but guided images were a different story (I do need to guide the system).  So last night lowered the guide exposure to 2", aggressiveness to 5 and round guided stars.  What I think might have been happening is that with a longer guider exposure, there would be centroid changes between exposures and the system was reacting to these.  With a shorter exposure, this is not happening as the "deviation" is not allowed.

 

So, just curious as to what others have their systems setup for guiding and if my thinking on this makes sense.

 

Mike J. Shade

Mike J. Shade Photography:

mshadephotography.com

 

In War: Resolution

In Defeat: Defiance

In Victory: Magnanimity

In Peace: Goodwill

Sir Winston Churchill

Already, in the gathering dusk, a few of the stars are turning on their lights.

Vega, the brightest one, is now dropping towards the west.  Can it be half

a year since I watched her April rising in the east?  Low in the southwest

Antares blinks a sad farwell to fall...

Leslie Peltier, Starlight Nights

 

International Dark Sky Association: www.darksky.org

 


Re: Error Connecting to ASCOM Driver #ASCOM_V2_Driver

Ray Gralak
 

> I worked with George at AstroPhysics on this issue.  We reviewed all the settings and corrected those that

> needed it.   I’m enclosing an image of issue.  When I start ACCP it doesn’t AutoConnect, despite setup that way.

> But the software does connect to mount when I manual pick the box. Interested in what to do next.

 

Try setting the connection properties like this:

 

 

You don’t need to connect the ASCOM driver on APCC connect.

 

If this still doesn’t work check that you have two Virtual ports defined. If you manually defined them at some point then APCC may not try to change them, so you may need to define the virtual ports you want to use. You only need to setup the first two.

 

-Ray Gralak

Author of APCC (Astro-Physics Command Center): https://www.astro-physics.com/apcc-pro

Author of PEMPro V3:  https://www.ccdware.com

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 dnakic via groups.io

> Sent: Wednesday, April 29, 2020 12:52 PM

> To: main@ap-gto.groups.io

> Subject: [ap-gto] Error Connecting to ASCOM Driver #ASCOM_V2_Driver

>

> I worked with George at AstroPhysics on this issue.  We reviewed all the settings and corrected those that

> needed it.   I’m enclosing an image of issue.  When I start ACCP it doesn’t AutoConnect, despite setup that way.

> But the software does connect to mount when I manual pick the box. Interested in what to do next.

>

> Thank,


Re: Mach1 CP3 pier crash!! (Similar to CP4 crash in another thread)

Michael 'Mikey' Mangieri
 

Indeed. The only time my Pyramid shut down was in the summer heat. That week I placed a small fan to circulate the air around it and the problem went away. 


On Apr 29, 2020, at 3:47 PM, Joe Zeglinski <J.Zeglinski@...> wrote:


Hi,
 
    You should be aware that under certain conditions, ANY Pyramid power supply, including the one sold through AP,  may NOT reset its “thermal breaker” after a dropout, for upto a half hour. So, you may give up and walk away too soon. Then all, is fine the next night, but the PYRAMID trips again. The Pyramid (old linear technology) supplies are not very efficient, but are generally well designed. Just heed their warnings and limitations.
 
    If you still have it, carefully read the Instruction Sheet.
Here is  Section #5,  which I transcribed from mine. Substitute “TRIP” ... for their word  “WORK”.
Yes, it does “work” as designed to do. The power supply breaker will trip,  eventually, even if there isn’t an immediate short circuit overload. So, any long duration or repeated mount slews, will eventually have the Pyramid protect itself, so you can take an imposed  coffee break, before going back to imaging :-)

 

(A-5)  WARNING / DEVICES.

 

THIS UNIT IS WELL BUILT WITH A WARNING!   SHUT DOWN FUNCTION.

THE WARNING / SHUT DOWN FUNCTION WILL WORK  -  UNDER THE FOLLOWING UNUSUAL STATUS:

 

1)    THIS UNIT IS USED OVER 15 MINUTES AT 100% OF RATED LOAD.

*

2)    THIS UNIT IS USED OVER 25 MINUTES AT 80% OF RATED LOAD.

*

3)        THE OUTPUT OF THIS UNIT IS SHORT-CIRCUITED/OVER LOAD/OVER TEMPERATURE

 

NOTES:

1) IF THE WARNING/ SHUT DOWN FUNCTION IS CAUSED BY THE ABOVE ITEMS # 1 AND 2 THEN THIS UNIT WILL RETURN TO NORMAL WHEN THE WARNING/SHUTDOWN FUNCTION CONTINUES TO WORK ABOUT 15-30 MINUTES.

*

2) THIS UNIT IS INTENDED TO CONTINUOUSLY WORK AT 70% OF RATED LOAD DESCRIPTION OF THE WARNING / SHUT DOWN FUNCTION:

STEP I.  THE OUTPUT SHUT SHUT DOWN.

STEP 2.  GREEN LED OF NORMAL OFF

STEP 3.  RED LED OF PROTECTION ON.

    Hope this helps explain the situation you had been having. Check you device power requirements.
When it happened to me, the overload eventually tripped the PYRAMID, and while I was away from the mount for a short while, the power supply cooled off and came alive – and the mount resumed its slew, right into the pier, before I could hit the main power switch. I wish the Pyramid would have stayed powered off, but it seems to have been designed to reset and resume without warning and “unattended operation” – NOT always a good thing.
 
Joe Z.
 
From: CurtisC via groups.io
Sent: Wednesday, April 29, 2020 3:59 AM
To: main@ap-gto.groups.io
Subject: Re: [ap-gto] Mach1 CP3 pier crash!! (Similar to CP4 crash in another thread)
 
I have an observatory.  The Pyramid ordinarily doesn't get very hot.  I tested its output voltage this evening, and it tested at 13.8.  So it came back after appearing dead.  Meanwhile, the little Radio Shack p.s. is connected to the CP3.


Lunar Tracking with Horizons #APCC

dnakic@...
 

I have the most recent version of APCC and Horizons and wanting to know that when I’m in the “Track Target” mode how do I reposition the object [Moon] but still retain tracking?  According to the instructions:

Check the “Disable Close Loop Corrections” < which screen do you do this in as this selection is in the “Test Tracking” screen?
Reposition your target < can I do this in SkyX or with ASCOM V2 directional controls?
Click Offset Target at Current Position button
Uncheck the “Disable Close Loop Corrections” < do I go back to “Test Tracking” screen?  After doing this, is it now tracking correctly?

Thanks!


Error Connecting to ASCOM Driver #ASCOM_V2_Driver

dnakic@...
 

I worked with George at AstroPhysics on this issue.  We reviewed all the settings and corrected those that needed it.   I’m enclosing an image of issue.  When I start ACCP it doesn’t AutoConnect, despite setup that way.  But the software does connect to mount when I manual pick the box. Interested in what to do next.

Thank,


Re: Mach1 CP3 pier crash!! (Similar to CP4 crash in another thread)

Joe Zeglinski
 

Hi,
 
    You should be aware that under certain conditions, ANY Pyramid power supply, including the one sold through AP,  may NOT reset its “thermal breaker” after a dropout, for upto a half hour. So, you may give up and walk away too soon. Then all, is fine the next night, but the PYRAMID trips again. The Pyramid (old linear technology) supplies are not very efficient, but are generally well designed. Just heed their warnings and limitations.
 
    If you still have it, carefully read the Instruction Sheet.
Here is  Section #5,  which I transcribed from mine. Substitute “TRIP” ... for their word  “WORK”.
Yes, it does “work” as designed to do. The power supply breaker will trip,  eventually, even if there isn’t an immediate short circuit overload. So, any long duration or repeated mount slews, will eventually have the Pyramid protect itself, so you can take an imposed  coffee break, before going back to imaging :-)

 

(A-5)  WARNING / DEVICES.

 

THIS UNIT IS WELL BUILT WITH A WARNING!   SHUT DOWN FUNCTION.

THE WARNING / SHUT DOWN FUNCTION WILL WORK  -  UNDER THE FOLLOWING UNUSUAL STATUS:

 

1)    THIS UNIT IS USED OVER 15 MINUTES AT 100% OF RATED LOAD.

*

2)    THIS UNIT IS USED OVER 25 MINUTES AT 80% OF RATED LOAD.

*

3)        THE OUTPUT OF THIS UNIT IS SHORT-CIRCUITED/OVER LOAD/OVER TEMPERATURE

 

NOTES:

1) IF THE WARNING/ SHUT DOWN FUNCTION IS CAUSED BY THE ABOVE ITEMS # 1 AND 2 THEN THIS UNIT WILL RETURN TO NORMAL WHEN THE WARNING/SHUTDOWN FUNCTION CONTINUES TO WORK ABOUT 15-30 MINUTES.

*

2) THIS UNIT IS INTENDED TO CONTINUOUSLY WORK AT 70% OF RATED LOAD DESCRIPTION OF THE WARNING / SHUT DOWN FUNCTION:

STEP I.  THE OUTPUT SHUT SHUT DOWN.

STEP 2.  GREEN LED OF NORMAL OFF

STEP 3.  RED LED OF PROTECTION ON.

    Hope this helps explain the situation you had been having. Check you device power requirements.
When it happened to me, the overload eventually tripped the PYRAMID, and while I was away from the mount for a short while, the power supply cooled off and came alive – and the mount resumed its slew, right into the pier, before I could hit the main power switch. I wish the Pyramid would have stayed powered off, but it seems to have been designed to reset and resume without warning and “unattended operation” – NOT always a good thing.
 
Joe Z.
 
From: CurtisC via groups.io
Sent: Wednesday, April 29, 2020 3:59 AM
To: main@ap-gto.groups.io
Subject: Re: [ap-gto] Mach1 CP3 pier crash!! (Similar to CP4 crash in another thread)
 
I have an observatory.  The Pyramid ordinarily doesn't get very hot.  I tested its output voltage this evening, and it tested at 13.8.  So it came back after appearing dead.  Meanwhile, the little Radio Shack p.s. is connected to the CP3.


Re: Mach1GTO RA is lurching back and forth a LOT

Roland Christen
 

If you did a balance with the worm gear backed off, you may have backed off the worm in a forbidden position. The ONLY configuration that you can back off the worm is in Park3. If you tried to back off the worm in any other position you may have accidentally scraped the worm teeth across the worm wheel and thus damaged both worm and worm wheel.

This scraping happens when you are unbalanced a lot and you disengage the worm with the lever. The axis will move suddenly and you will hear a scraping sound as the teeth run over each other. That is why we strongly recommend first doing a rough balance using the clutches, followed by a fine balance with the worm disengaged in Park3 (scope and counterweight vertical) and then moved to where the scope and counterweight are horizontal. Under no circumstances should you ever disengage the worm while counter shaft is horizontal. Same is true for the Dec axis.

Rolando



-----Original Message-----
From: fd <fd@...>
To: main <main@ap-gto.groups.io>
Sent: Wed, Apr 29, 2020 12:08 pm
Subject: [ap-gto] Mach1GTO RA is lurching back and forth a LOT

When new (November 2017) my Mach1GTO was very smooth. I could shoot 5 minute subs unguided at 480mm all night long. 

Now the RA has regular "lurches" (as I call them). See the PHD2 Guiding assistant pic below.  The RA jumps 2"-8" in the time a 5 second guide exposure is shot, THEN is steady-ish for a while. Of course these jumps are too quick to guide out.  I have run PEMPro, PEC corrected tracking seems to be about 1" RMS.   I have set the RA "backstop" a couple of times with the thumb&forefinger method.  It seems sometimes, in certain areas of the sky, the "lurching" doesn't happen.  But it happens most of the time.

Has anyone else experienced this?  Any ideas of what to try to fix it?

My setup for the following data was:
  • Mach1GTO
  • Permanent pier: 8.625" OD steel pier bolted to 12" diameter 84" deep below ground concrete pier.
  • Celestron EdgeHD 8 at f/10 2032mm focal length. Screenshots below taken at 2032mm, usually I do photography at 1422mm with this scope.
  • Losmandy D dovetail plate mounted to Celestron scope
  • MoonLite focuser
  • ZWO Off Axis Guider
  • ZWO ASI174MM Mini guide camera.
  • 0.59 arc-sec/pixel on the guide camera
  • 2x USB and 2x 18ga power wires through the mount
  • Focus controller, dew controller, and USB hub are mounted on the scope, along with numerous cables.
I have set the "backstop" on the RA motor.  The box with the motor can rock back and forth slightly but it almost takes 2 hands to move it a millimeter or so.
--
Mach1GTO and GTOCP4 on permanent pier


Mach1GTO RA is lurching back and forth a LOT

fd@...
 

When new (November 2017) my Mach1GTO was very smooth. I could shoot 5 minute subs unguided at 480mm all night long. 

Now the RA has regular "lurches" (as I call them). See the PHD2 Guiding assistant pic below.  The RA jumps 2"-8" in the time a 5 second guide exposure is shot, THEN is steady-ish for a while. Of course these jumps are too quick to guide out.  I have run PEMPro, PEC corrected tracking seems to be about 1" RMS.   I have set the RA "backstop" a couple of times with the thumb&forefinger method.  It seems sometimes, in certain areas of the sky, the "lurching" doesn't happen.  But it happens most of the time.

Has anyone else experienced this?  Any ideas of what to try to fix it?

My setup for the following data was:

  • Mach1GTO
  • Permanent pier: 8.625" OD steel pier bolted to 12" diameter 84" deep below ground concrete pier.
  • Celestron EdgeHD 8 at f/10 2032mm focal length. Screenshots below taken at 2032mm, usually I do photography at 1422mm with this scope.
  • Losmandy D dovetail plate mounted to Celestron scope
  • MoonLite focuser
  • ZWO Off Axis Guider
  • ZWO ASI174MM Mini guide camera.
  • 0.59 arc-sec/pixel on the guide camera
  • 2x USB and 2x 18ga power wires through the mount
  • Focus controller, dew controller, and USB hub are mounted on the scope, along with numerous cables.
I have set the "backstop" on the RA motor.  The box with the motor can rock back and forth slightly but it almost takes 2 hands to move it a millimeter or so.
--
Mach1GTO and GTOCP4 on permanent pier


Re: Mach2 Status Update

Dominique Durand
 

On Wed, Apr 29, 2020 at 06:01 PM, Rick Socarras wrote:
AP has been busy!  I was notified this Monday that my Mach 2 was ready!  It's on it's way to me now and yes I'm very excited.   Thankfully, the wait was nothing compared to the 130 GTX! Thank you AP for all your hard work in this crazy time.  Stay Safe all...
8 months anyway ...In France we are patient and we also hope for soon.
But above all stay safe all ...
Dominique


Re: CP4 Time & Location

Wes Atchison
 

Thanks guys, sorry for taking up you time.  After I posted the question I opened up " Telescope Setup" and realized there was my answer.  Since getting the mount recently I have very little time out using it and forgot I had entered locations for several sites.

Thank you again for all the great support, wish other companies stood behind their product like you guys do.

Best Regards,

Wes
WA5TKU


Re: CP4 Time & Location

Roland Christen
 

You enter these things in the "Telescope Setup" window.

Rolando



-----Original Message-----
From: Wes Atchison <wa5tku@...>
To: main <main@ap-gto.groups.io>
Sent: Wed, Apr 29, 2020 11:17 am
Subject: [ap-gto] CP4 Time & Location

Trying to get my head around how the CP4 gets the time and location from a computer.  I have read the manual for the CP4 and searched the topic on the group page.  I understand the information from the Keypad when powered up is the location selected in the Keypad.  If only a computer is attached when the CP4 is powered up I understand the time from the computer is uploaded to the CP4.  Where does the location come from?  Also, if a GPS is connected to the computer can that be used as the source of time and location?

If this information has been discussed before on the group I apologize or bring it up again but my search did not find an answer to my question.

Wes
WA5TKU


Re: Mach2 Status Update

Roland Christen
 

Yes, you're on the list, a bit down but within reach ;^)

Rolando



-----Original Message-----
From: Dean Jacobsen <deanjacobsen@...>
To: main <main@ap-gto.groups.io>
Sent: Wed, Apr 29, 2020 10:07 am
Subject: Re: [ap-gto] Mach2 Status Update

On Wed, Apr 29, 2020 at 07:59 AM, dvjbaja wrote:
We can only hope that one of those mounts is Deans!   LOL   
 
One can only hope.  ;-)
 
--
Dean Jacobsen
http://astrophoto.net/wp/ 
Image Gallery - http://astrophoto.net/wp/image-gallery/
Astrobin - https://www.astrobin.com/users/deanjacobsen/ 


Re: CP4 Time & Location

George
 

Wes,

 

It comes from APCC or from the AP V2 driver.

 

Regards,

 

George

 

George Whitney

Astro-Physics, Inc.

Phone:  815-282-1513

Email:  george@...

 

From: main@ap-gto.groups.io [mailto:main@ap-gto.groups.io] On Behalf Of Wes Atchison
Sent: Wednesday, April 29, 2020 11:17 AM
To: main@ap-gto.groups.io
Subject: [ap-gto] CP4 Time & Location

 

Trying to get my head around how the CP4 gets the time and location from a computer.  I have read the manual for the CP4 and searched the topic on the group page.  I understand the information from the Keypad when powered up is the location selected in the Keypad.  If only a computer is attached when the CP4 is powered up I understand the time from the computer is uploaded to the CP4.  Where does the location come from?  Also, if a GPS is connected to the computer can that be used as the source of time and location?

If this information has been discussed before on the group I apologize or bring it up again but my search did not find an answer to my question.

Wes
WA5TKU


Re: Mach2 Status Update

Dean Jacobsen
 

On Wed, Apr 29, 2020 at 09:01 AM, Rick Socarras wrote:
AP has been busy!  I was notified this Monday that my Mach 2 was ready!  It's on it's way to me now and yes I'm very excited.   Thankfully, the wait was nothing compared to the 130 GTX! Thank you AP for all your hard work in this crazy time.  Stay Safe all...
Congratulations.  It is good to hear that more on this list are receiving theirs.
 
--
Dean Jacobsen
http://astrophoto.net/wp/ 
Image Gallery - http://astrophoto.net/wp/image-gallery/
Astrobin - https://www.astrobin.com/users/deanjacobsen/ 


CP4 Time & Location

Wes Atchison
 

Trying to get my head around how the CP4 gets the time and location from a computer.  I have read the manual for the CP4 and searched the topic on the group page.  I understand the information from the Keypad when powered up is the location selected in the Keypad.  If only a computer is attached when the CP4 is powered up I understand the time from the computer is uploaded to the CP4.  Where does the location come from?  Also, if a GPS is connected to the computer can that be used as the source of time and location?

If this information has been discussed before on the group I apologize or bring it up again but my search did not find an answer to my question.

Wes
WA5TKU


Re: Mach2 Status Update

Rick Socarras
 

AP has been busy!  I was notified this Monday that my Mach 2 was ready!  It's on it's way to me now and yes I'm very excited.   Thankfully, the wait was nothing compared to the 130 GTX! Thank you AP for all your hard work in this crazy time.  Stay Safe all...


Re: Mach2 Status Update

Dean Jacobsen
 

On Wed, Apr 29, 2020 at 07:59 AM, dvjbaja wrote:
We can only hope that one of those mounts is Deans!   LOL   
 
One can only hope.  ;-)
 
--
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

Dean Jacobsen
 

On Wed, Apr 29, 2020 at 07:54 AM, uncarollo2 <chris1011@...> wrote:
We are busy assembling and shipping. I have people doing sub-assemblies at home and I am doing all final assembly and testing here. There are mounts going out pretty much every day now.
 
Thanks for the update.
 
--
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

dvjbaja
 

We can only hope that one of those mounts is Deans!   LOL   


On Wed, Apr 29, 2020 at 7:54 AM uncarollo2 <chris1011@...> via groups.io <chris1011=aol.com@groups.io> wrote:
We are busy assembling and shipping. I have people doing sub-assemblies at home and I am doing all final assembly and testing here. There are mounts going out pretty much every day now.

Rolando



-----Original Message-----
From: Dean Jacobsen <deanjacobsen@...>
To: main <main@ap-gto.groups.io>
Sent: Wed, Apr 29, 2020 9:03 am
Subject: [ap-gto] Mach2 Status Update

As we get ready to roll into May, I was wondering about the status of the Mach2.  Is there any news for those of us who have pending Mach2 orders?
--
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

Roland Christen
 

We are busy assembling and shipping. I have people doing sub-assemblies at home and I am doing all final assembly and testing here. There are mounts going out pretty much every day now.

Rolando



-----Original Message-----
From: Dean Jacobsen <deanjacobsen@...>
To: main <main@ap-gto.groups.io>
Sent: Wed, Apr 29, 2020 9:03 am
Subject: [ap-gto] Mach2 Status Update

As we get ready to roll into May, I was wondering about the status of the Mach2.  Is there any news for those of us who have pending Mach2 orders?
--
Dean Jacobsen
http://astrophoto.net/wp/ 
Image Gallery - http://astrophoto.net/wp/image-gallery/
Astrobin - https://www.astrobin.com/users/deanjacobsen/ 

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