Date   

Re: How to prevent small movements

Ray Gralak
 

Hi Konstantin,

yes that is what I mean. I thought I have the newest firmware (Mach2) and APCC Pro and AP V2, or are there
Can you confirm you are using APCC Pro v1.8.4.1, firmware VCP5-P02-05, and AP V2 5.30.10?

special versions for people who wand that behavior?
There's no special version for this. I'll have to look into this. But, I will need you to confirm your firmware and software versions (above).

By the way, did find out something about the parking problem from cw up positions?
I think that was something possibly in firmware, so Howard/Mike have been looking into that, but I don't know the status.

-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 Konstantin von Poschinger
Sent: Monday, August 10, 2020 1:48 AM
To: main@ap-gto.groups.io
Subject: Re: [ap-gto] How to prevent small movements

Hi Ray,

yes that is what I mean. I thought I have the newest firmware (Mach2) and APCC Pro and AP V2, or are there
special versions for people who wand that behavior?
By the way, did find out something about the parking problem from cw up positions?


Konstantin


Am 10.08.2020 um 05:36 schrieb Ray Gralak <groups3@gralak.com>:

Hi Konstantin,

I forgott how to prevent small movements in the cw up area, if the mount is taking small movements for
dithering.

I'm not sure I understand your question.

Do you mean you want to prevent the mount from slewing to cw down when dithering in a cw up position?

If that's the question, can you provide the mount firmware version, APCC version, and AP V2 driver version?

-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 Konstantin von Poschinger
Sent: Sunday, August 9, 2020 5:37 PM
To: main@ap-gto.groups.io
Subject: [ap-gto] How to prevent small movements

Hi Ray,

I forgott how to prevent small movements in the cw up area, if the mount is taking small movements for
dithering.

Grüsse

Konstantin v. Poschinger


Hammerichstr. 5
22605 Hamburg
040/8805747
0171/1983476





Re: CCDWare site Trojan?

Ray Gralak
 

Hi George,

Let me make it clear - the domain ccdware.com is reported by Malwarebytes as having a trojan. It has been listed
as so since Feb. 2020 on their server.
CCDWare recently (last week) moved to a completely new site, so maybe refreshing your browser will help?

The site will look similar but was completely rewritten well after February.

-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 George LaBelle
Sent: Monday, August 10, 2020 6:59 AM
To: main@ap-gto.groups.io
Subject: Re: [ap-gto] CCDWare site Trojan?

Let me make it clear - the domain ccdware.com is reported by Malwarebytes as having a trojan. It has been listed
as so since Feb. 2020 on their server.
It doesn't matter which product you try to view. Going to "ccdware.com" is prevented by Malwarebytes. I never got
to any product page.

I never said Pempro or any other product they sell had a trojan! I thought it was clear that I was "trying to get"
Pempro.

I'm sure it is a false positive. I went ahead and allowed that domain and was able to enter the site.

--
George
Prineville, Oregon


Re: Help With APPM and Dome Slewing/Camera Image Not In Sync

Ray Gralak
 

Hi Tony,

 

You have several options you can try:

 

1) You can use an intermediate ASCOM dome driver like "ASCOM Dome Control", that APPM can poll to determine if the slew has completed. If you do this, configure the dome control method in APPM to use the passive method as shown in this screenshot:

 

 

2) On APPM's Measurement Points tab, you can select "Hour Angle" as the Point Ordering Strategy.  This will minimize the required dome movements.

 

3) On APPM's Run tab, you can enable the checkbox "Pause after Each Slew," which will allow the dome time to finish a move. The drawback is that you will have to manually continue after each point.

 

 

-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 Tony Benjamin

> Sent: Sunday, August 9, 2020 10:44 PM

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

> Subject: [ap-gto] Help With APPM and Dome Slewing/Camera Image Not In Sync

>

> Hi,

>

> Trying to use APPM for a mapping model but there is too much delay between the time the telescope slews to a

> new position (and the camera starts taking an image) and the dome rotates to that position - so I end up taking a

> pic of the inside of the dome and of course plate solving fails.

>

> I made a short video of the problem:

>

> https://www.youtube.com/watch?v=k6pbx_Mq-yY


Re: CCDWare site Trojan?

George LaBelle
 

Let me make it clear - the domain ccdware.com is reported by Malwarebytes as having a trojan. It has been listed as so since Feb. 2020 on their server.
It doesn't matter which product you try to view. Going to "ccdware.com" is prevented by Malwarebytes. I never got to any product page.

I never said Pempro or any other product they sell had a trojan! I thought it was clear that I was "trying to get" Pempro.

I'm sure it is a false positive. I went ahead and allowed that domain and was able to enter the site.

--
George
Prineville, Oregon


Re: How to prevent small movements

Konstantin von Poschinger
 

Hi Ray,

yes that is what I mean. I thought I have the newest firmware (Mach2) and APCC Pro and AP V2, or are there special versions for people who wand that behavior?
By the way, did find out something about the parking problem from cw up positions?


Konstantin

Am 10.08.2020 um 05:36 schrieb Ray Gralak <groups3@gralak.com>:

Hi Konstantin,

I forgott how to prevent small movements in the cw up area, if the mount is taking small movements for dithering.
I'm not sure I understand your question.

Do you mean you want to prevent the mount from slewing to cw down when dithering in a cw up position?

If that's the question, can you provide the mount firmware version, APCC version, and AP V2 driver version?

-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 Konstantin von Poschinger
Sent: Sunday, August 9, 2020 5:37 PM
To: main@ap-gto.groups.io
Subject: [ap-gto] How to prevent small movements

Hi Ray,

I forgott how to prevent small movements in the cw up area, if the mount is taking small movements for dithering.

Grüsse

Konstantin v. Poschinger


Hammerichstr. 5
22605 Hamburg
040/8805747
0171/1983476




Help With APPM and Dome Slewing/Camera Image Not In Sync

Tony Benjamin <tonybenjamin@...>
 

Hi,

Trying to use APPM for a mapping model but there is too much delay between the time the telescope slews to a new position (and the camera starts taking an image) and the dome rotates to that position - so I end up taking a pic of the inside of the dome and of course plate solving fails.

I made a short video of the problem:

https://www.youtube.com/watch?v=k6pbx_Mq-yY


Re: CCDWare site Trojan?

Ray Gralak
 

Hi George,

As Brian stated, PEMPro does not have a Trojan virus. You probably clicked the download button for CCD Navigator or Weather Ninja, which for some reason, sometimes gets a false positive.

I asked John Smith to move the other application's download link away from PEMPro so that hopefully, others won't click the wrong link by mistake!

-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 George LaBelle
Sent: Sunday, August 9, 2020 8:16 AM
To: main@ap-gto.groups.io
Subject: [ap-gto] CCDWare site Trojan?

I use Mawarebytes which is reporting that ccdware.com has a trojan.

I'd like to get PEMPRO V3.

Anyone visited this site recently? Had a problem? The trojan, according to Malwarebytes was discovered in
February.
--
George
Prineville, Oregon


Re: How to prevent small movements

Ray Gralak
 

Hi Konstantin,

I forgott how to prevent small movements in the cw up area, if the mount is taking small movements for dithering.
I'm not sure I understand your question.

Do you mean you want to prevent the mount from slewing to cw down when dithering in a cw up position?

If that's the question, can you provide the mount firmware version, APCC version, and AP V2 driver version?

-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 Konstantin von Poschinger
Sent: Sunday, August 9, 2020 5:37 PM
To: main@ap-gto.groups.io
Subject: [ap-gto] How to prevent small movements

Hi Ray,

I forgott how to prevent small movements in the cw up area, if the mount is taking small movements for dithering.

Grüsse

Konstantin v. Poschinger


Hammerichstr. 5
22605 Hamburg
040/8805747
0171/1983476


Re: Delrin plugs

Joe Zeglinski
 

Michael,
 
    AP sells DELRIN Clutch plugs  as a kit – and I suggest getting spares  just in case you lose one, or have a problem fitting it in. However, You will need AP’s  simple but  special tool -  and fair warning,  it is still a bear to use successfully.
 
    Lesson I learned with those DELRIN clutch plugs – “Finger tight” knobs, may STILL  be too tight, so you get mushroomed plugs, very difficult to extract. Wouldn’t want to have to do that ever again, and really admire the AP staff,  if they have to do this repair.
Good luck.
 
Joe Z.
 
 

From: Michael Dolenga via groups.io
Sent: Sunday, August 9, 2020 9:52 PM
To: main@ap-gto.groups.io
Subject: [ap-gto] Delrin plugs
 

Hello – I have a 900GTO mount bought new in 2011. I think the Delrin plugs have gotten compressed; I notice that when I am balancing my setup, they barely move. Probably too enthusiastic when tightening down the clutches.

 

I looked on the Astro-Physics site, but couldn’t find them. Does anyone know where to get a set of replacements?

 

Michael

 

Sent from Mail for Windows 10

 


Delrin plugs

Michael Dolenga
 

Hello – I have a 900GTO mount bought new in 2011. I think the Delrin plugs have gotten compressed; I notice that when I am balancing my setup, they barely move. Probably too enthusiastic when tightening down the clutches.

 

I looked on the Astro-Physics site, but couldn’t find them. Does anyone know where to get a set of replacements?

 

Michael

 

Sent from Mail for Windows 10

 


How to prevent small movements

Konstantin von Poschinger
 

Hi Ray,

I forgott how to prevent small movements in the cw up area, if the mount is taking small movements for dithering.

Grüsse

Konstantin v. Poschinger


Hammerichstr. 5
22605 Hamburg
040/8805747
0171/1983476


Re: CCDWare site Trojan?

CurtisC
 

I downloaded PEMPro 3 from CCDWare about a week ago, and I haven't seen any problems with Trojan horses.


Re: Star Eccentricity Help

Mike Shade
 

Ah, OK, not a big user of PI but the chart helps.  Thanks...

 

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

 

From: main@ap-gto.groups.io [mailto:main@ap-gto.groups.io] On Behalf Of Brian Valente
Sent: Sunday, August 09, 2020 1:07 PM
To: main@ap-gto.groups.io
Subject: Re: [ap-gto] Star Eccentricity Help

 

Hi Mike

 

I think you may be thinking of star flatness?

 

i snagged this description out of PI's subframe selector - btw in this doc they spec 0.42 as being perfectly round

 

Eccentricity is a measure of star profile distortion. Given an elliptical star profile with major axis diameter a and minor axis diameter b where a is greater than or equal to b, the star profile eccentricity equals (1 - b2 / a2)0.5, the star profile aspect ratio equals b / a and the star profile flatness equals a / b - 1. For all stars fit in an image, their Eccentricity is weighted by the StarResidual value to minimize the influence of bad fits. A distortion with an eccentricity less than about 0.42 is not perceptible to most people. The table below shows the relationship between these measures.

image.png

 

On Sun, Aug 9, 2020 at 12:54 PM Mike Shade <mshade@q.com> wrote:

The value of .5 is stated as round, I am curious if .05 is what people mean.  According the Maxim's help, a value of .1 means that the star is longer in one axis by 10%, so a value of .5 would be 50%.  That would be horribly out of round.  Want to make sure that I am following.  With my system, PW 17/AP1600 (non AE)/STL6303E camera/Optec Gemini rotating focuser/.63" pixel/5' subs I generally get roundness values from .01 to .05, depending on where the system is pointed/seeing.

 

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

 

From: main@ap-gto.groups.io [mailto:main@ap-gto.groups.io] On Behalf Of Brian Valente
Sent: Sunday, August 09, 2020 9:23 AM
To: main@ap-gto.groups.io
Subject: Re: [ap-gto] Star Eccentricity Help

 

>>>  Is the solution a Planewave?? J

 

  either that, or I hear AP has a 17" reflector they are working on :)

 

>>What should I expect for good eccentricity - .35ish??

 

generally eccentricity of 0.5 or lower is considered 'perceptibly round'

 

I'm not sure i would 'expect' that, but i would certainly aim for that

 

 

 

On Sun, Aug 9, 2020 at 9:10 AM Tony Benjamin <tonybenjamin@...> wrote:

Thanks Brian. I’m sure mirror flop is a definite possibility, even with the Edge mirror being “locked down”. Is the solution a Planewave?? J

 

What should I expect for good eccentricity - .35ish??

 

From: main@ap-gto.groups.io [mailto:main@ap-gto.groups.io] On Behalf Of Brian Valente
Sent: August 9, 2020 9:04 AM
To: main@ap-gto.groups.io
Subject: Re: [ap-gto] Star Eccentricity Help

 

Okay thanks

 

I'm poking around in your logs some, and I'm waiting to hear back from someone else I asked a Q about, but I can see your RA corrections are primarily one-sided at higher altitudes (and a corresponding increase in RA and therefore your eccentricity goes up), and as you get lower in the sky, RA corrections become more even on both sides, and your RA RMS and eccentricity both go down

 

My suspicion is mirror flop or something shifting in your equipment

 

On Sun, Aug 9, 2020 at 8:54 AM Tony Benjamin <tonybenjamin@...> wrote:

No, no seperate guide scope. I'm using an Ultrastar guide camera on a QHYOAG.


 

--

Brian 

 

 

 

Brian Valente


 

--

Brian 

 

 

 

Brian Valente


 

--

Brian 

 

 

 

Brian Valente


Re: Star Eccentricity Help

 

Hi Mike

I think you may be thinking of star flatness?

i snagged this description out of PI's subframe selector - btw in this doc they spec 0.42 as being perfectly round

Eccentricity is a measure of star profile distortion. Given an elliptical star profile with major axis diameter a and minor axis diameter b where a is greater than or equal to b, the star profile eccentricity equals (1 - b2 / a2)0.5, the star profile aspect ratio equals b / a and the star profile flatness equals a / b - 1. For all stars fit in an image, their Eccentricity is weighted by the StarResidual value to minimize the influence of bad fits. A distortion with an eccentricity less than about 0.42 is not perceptible to most people. The table below shows the relationship between these measures.

image.png

On Sun, Aug 9, 2020 at 12:54 PM Mike Shade <mshade@q.com> wrote:

The value of .5 is stated as round, I am curious if .05 is what people mean.  According the Maxim's help, a value of .1 means that the star is longer in one axis by 10%, so a value of .5 would be 50%.  That would be horribly out of round.  Want to make sure that I am following.  With my system, PW 17/AP1600 (non AE)/STL6303E camera/Optec Gemini rotating focuser/.63" pixel/5' subs I generally get roundness values from .01 to .05, depending on where the system is pointed/seeing.

 

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

 

From: main@ap-gto.groups.io [mailto:main@ap-gto.groups.io] On Behalf Of Brian Valente
Sent: Sunday, August 09, 2020 9:23 AM
To: main@ap-gto.groups.io
Subject: Re: [ap-gto] Star Eccentricity Help

 

>>>  Is the solution a Planewave?? J

 

  either that, or I hear AP has a 17" reflector they are working on :)

 

>>What should I expect for good eccentricity - .35ish??

 

generally eccentricity of 0.5 or lower is considered 'perceptibly round'

 

I'm not sure i would 'expect' that, but i would certainly aim for that

 

 

 

On Sun, Aug 9, 2020 at 9:10 AM Tony Benjamin <tonybenjamin@...> wrote:

Thanks Brian. I’m sure mirror flop is a definite possibility, even with the Edge mirror being “locked down”. Is the solution a Planewave?? J

 

What should I expect for good eccentricity - .35ish??

 

From: main@ap-gto.groups.io [mailto:main@ap-gto.groups.io] On Behalf Of Brian Valente
Sent: August 9, 2020 9:04 AM
To: main@ap-gto.groups.io
Subject: Re: [ap-gto] Star Eccentricity Help

 

Okay thanks

 

I'm poking around in your logs some, and I'm waiting to hear back from someone else I asked a Q about, but I can see your RA corrections are primarily one-sided at higher altitudes (and a corresponding increase in RA and therefore your eccentricity goes up), and as you get lower in the sky, RA corrections become more even on both sides, and your RA RMS and eccentricity both go down

 

My suspicion is mirror flop or something shifting in your equipment

 

On Sun, Aug 9, 2020 at 8:54 AM Tony Benjamin <tonybenjamin@...> wrote:

No, no seperate guide scope. I'm using an Ultrastar guide camera on a QHYOAG.


 

--

Brian 

 

 

 

Brian Valente


 

--

Brian 

 

 

 

Brian Valente



--
Brian 



Brian Valente


Re: Star Eccentricity Help

Mike Shade
 

The value of .5 is stated as round, I am curious if .05 is what people mean.  According the Maxim's help, a value of .1 means that the star is longer in one axis by 10%, so a value of .5 would be 50%.  That would be horribly out of round.  Want to make sure that I am following.  With my system, PW 17/AP1600 (non AE)/STL6303E camera/Optec Gemini rotating focuser/.63" pixel/5' subs I generally get roundness values from .01 to .05, depending on where the system is pointed/seeing.

 

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

 

From: main@ap-gto.groups.io [mailto:main@ap-gto.groups.io] On Behalf Of Brian Valente
Sent: Sunday, August 09, 2020 9:23 AM
To: main@ap-gto.groups.io
Subject: Re: [ap-gto] Star Eccentricity Help

 

>>>  Is the solution a Planewave?? J

 

  either that, or I hear AP has a 17" reflector they are working on :)

 

>>What should I expect for good eccentricity - .35ish??

 

generally eccentricity of 0.5 or lower is considered 'perceptibly round'

 

I'm not sure i would 'expect' that, but i would certainly aim for that

 

 

 

On Sun, Aug 9, 2020 at 9:10 AM Tony Benjamin <tonybenjamin@...> wrote:

Thanks Brian. I’m sure mirror flop is a definite possibility, even with the Edge mirror being “locked down”. Is the solution a Planewave?? J

 

What should I expect for good eccentricity - .35ish??

 

From: main@ap-gto.groups.io [mailto:main@ap-gto.groups.io] On Behalf Of Brian Valente
Sent: August 9, 2020 9:04 AM
To: main@ap-gto.groups.io
Subject: Re: [ap-gto] Star Eccentricity Help

 

Okay thanks

 

I'm poking around in your logs some, and I'm waiting to hear back from someone else I asked a Q about, but I can see your RA corrections are primarily one-sided at higher altitudes (and a corresponding increase in RA and therefore your eccentricity goes up), and as you get lower in the sky, RA corrections become more even on both sides, and your RA RMS and eccentricity both go down

 

My suspicion is mirror flop or something shifting in your equipment

 

On Sun, Aug 9, 2020 at 8:54 AM Tony Benjamin <tonybenjamin@...> wrote:

No, no seperate guide scope. I'm using an Ultrastar guide camera on a QHYOAG.


 

--

Brian 

 

 

 

Brian Valente


 

--

Brian 

 

 

 

Brian Valente


Re: Star Eccentricity Help

 

>>>  Is the solution a Planewave?? J

  either that, or I hear AP has a 17" reflector they are working on :)

>>What should I expect for good eccentricity - .35ish??

generally eccentricity of 0.5 or lower is considered 'perceptibly round'

I'm not sure i would 'expect' that, but i would certainly aim for that



On Sun, Aug 9, 2020 at 9:10 AM Tony Benjamin <tonybenjamin@...> wrote:

Thanks Brian. I’m sure mirror flop is a definite possibility, even with the Edge mirror being “locked down”. Is the solution a Planewave?? J

 

What should I expect for good eccentricity - .35ish??

 

From: main@ap-gto.groups.io [mailto:main@ap-gto.groups.io] On Behalf Of Brian Valente
Sent: August 9, 2020 9:04 AM
To: main@ap-gto.groups.io
Subject: Re: [ap-gto] Star Eccentricity Help

 

Okay thanks

 

I'm poking around in your logs some, and I'm waiting to hear back from someone else I asked a Q about, but I can see your RA corrections are primarily one-sided at higher altitudes (and a corresponding increase in RA and therefore your eccentricity goes up), and as you get lower in the sky, RA corrections become more even on both sides, and your RA RMS and eccentricity both go down

 

My suspicion is mirror flop or something shifting in your equipment

 

On Sun, Aug 9, 2020 at 8:54 AM Tony Benjamin <tonybenjamin@...> wrote:

No, no seperate guide scope. I'm using an Ultrastar guide camera on a QHYOAG.


 

--

Brian 

 

 

 

Brian Valente



--
Brian 



Brian Valente


Re: Star Eccentricity Help

Tony Benjamin <tonybenjamin@...>
 

Thanks Brian. I’m sure mirror flop is a definite possibility, even with the Edge mirror being “locked down”. Is the solution a Planewave?? J

 

What should I expect for good eccentricity - .35ish??

 

From: main@ap-gto.groups.io [mailto:main@ap-gto.groups.io] On Behalf Of Brian Valente
Sent: August 9, 2020 9:04 AM
To: main@ap-gto.groups.io
Subject: Re: [ap-gto] Star Eccentricity Help

 

Okay thanks

 

I'm poking around in your logs some, and I'm waiting to hear back from someone else I asked a Q about, but I can see your RA corrections are primarily one-sided at higher altitudes (and a corresponding increase in RA and therefore your eccentricity goes up), and as you get lower in the sky, RA corrections become more even on both sides, and your RA RMS and eccentricity both go down

 

My suspicion is mirror flop or something shifting in your equipment

 

On Sun, Aug 9, 2020 at 8:54 AM Tony Benjamin <tonybenjamin@...> wrote:

No, no seperate guide scope. I'm using an Ultrastar guide camera on a QHYOAG.


 

--

Brian 

 

 

 

Brian Valente


Re: Star Eccentricity Help

 

Okay thanks

I'm poking around in your logs some, and I'm waiting to hear back from someone else I asked a Q about, but I can see your RA corrections are primarily one-sided at higher altitudes (and a corresponding increase in RA and therefore your eccentricity goes up), and as you get lower in the sky, RA corrections become more even on both sides, and your RA RMS and eccentricity both go down

My suspicion is mirror flop or something shifting in your equipment

On Sun, Aug 9, 2020 at 8:54 AM Tony Benjamin <tonybenjamin@...> wrote:
No, no seperate guide scope. I'm using an Ultrastar guide camera on a QHYOAG.



--
Brian 



Brian Valente


Re: Star Eccentricity Help

Tony Benjamin <tonybenjamin@...>
 

No, no seperate guide scope. I'm using an Ultrastar guide camera on a QHYOAG.


Re: Star Eccentricity Help

Tony Benjamin <tonybenjamin@...>
 

Hi Brian,

No, not yet. As I mentioned in my OP I haven't made one for the C11 yet...but will be doing so on the next clear night :)

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