Date   

Re: Pier for AP1600

Googaliser
 

Am also a fan of the Monolith and funnily enough there is one available now on Amart (In Texas - 48" and attached to a 1200GTO). It could use a new coat of paint - but may be worth seeing if the seller will split from the mount. It looks like a 36"+12" which is more flexible if you plan on switching it between visual and imaging duties


Re: APPM with Different Cameras

 

Actually, the CP4 control boxes do not have this feature yet. We plan to make it available within the next month.

 

Clear Skies,

Marj Christen

Astro-Physics

11250 Forest Hills Road

Machesney Park, IL 61115

Phone: 815-282-1513

www.astro-physics.com

 

From: main@ap-gto.groups.io <main@ap-gto.groups.io> On Behalf Of Roland Christen via groups.io
Sent: Wednesday, February 2, 2022 5:55 PM
To: main@ap-gto.groups.io
Subject: Re: [ap-gto] APPM with Different Cameras

 

People who have purchased the 1100/1600 in these last couple of runs have the latest software in their CP4 and keypad.

 

Roland

 

-----Original Message-----
From: W Hilmo <y.groups@...>
To: main@ap-gto.groups.io
Sent: Wed, Feb 2, 2022 5:07 pm
Subject: Re: [ap-gto] APPM with Different Cameras

Indeed.  I was asking if the updated firmware is available yet.

From your later reply, it sounds like "not yet", which is what I thought.  I just got a bit excited when you mentioned "CP4/5" below :)

-Wade

On 2/2/22 2:04 PM, Roland Christen via groups.io wrote:

CP4s are software upgrade-able.

 

Rolando

 

 

-----Original Message-----
From: W Hilmo <y.groups@...>
To: main@ap-gto.groups.io
Sent: Wed, Feb 2, 2022 3:56 pm
Subject: Re: [ap-gto] APPM with Different Cameras

Does the current CP4 firmware already have these features?  I hadn't heard that.

Thanks,
-Wade

On 2/2/22 1:35 PM, Roland Christen via groups.io wrote:

The latest keypad software has a built-in modeling routines, one of which is Dec arc modeling which is effective at producing the RA/Dec rates to compensate for drift in those axes for a specific object. There is also global modeling for pointing and a routine for eliminating orthogonality error. In the case of the keypad, this model resides in the CP4/5 controller, rather than on a laptop, so it can be used in the field without a laptop for someone that just wants to do imaging with a consumer digital camera. I have tested the software on a number of objects and the latest version is quite effective for unguided imaging. The only downside is that you have to do some work to pick the points and center them, whereas APCC-APPM is totally automated.

 

Since the keypad is a manual operation, there is the possibility of user error if you don't follow the instructions on the keypad exactly. If you make a mistake and press the wrong key, you can always exit and go back to the routine without losing the previous entries. With APPM the human input is minimal, and thus the possibility of mistakes are essentially gone.

 

The keypad routine for Dec arc modeling has two methods. The first is to center up to 8 points along a Dec arc where the object is located. You only need one Dec arc with 8 points, no need to bracket it. Centering is done either manually with a crosshair, or with plate solve software (which requires external software/hardware). Once all points are entered into the modeling, you simply change the keypad from Sidereal to Custom and you are off to the races.

 

The second method measures the actual drift rate of any given point along the Dec arc. You start by placing a crosshair on any star in the field and entering that data point. You let it drift for 5 - 10 minutes, recenter the same star and enter that point. The CP4/5 calculates the exact drift rate for that point in the sky and creates a custom rate from that. You can enter up to 8 points on a Dec line to get maximum precision. The CP4/5 draws a curve thru the points and interpolates rates between them. In practice I have entered just 3 points and gotten excellent results for 6 hours of tracking with 10 minute exposures.

 

Rolando

 

-----Original Message-----
From: Larry Phillips <llp41astro@...>
To: main@ap-gto.groups.io
Sent: Wed, Feb 2, 2022 2:00 pm
Subject: Re: [ap-gto] APPM with Different Cameras

Wade, so, I would need the latest APCC to make this work.  I have had issues with the latest one onl this computer and am awaiting some changes by Ray.  I am using 1.9.0.11 so I guess this option is on hold for me.  However, I thought Roland had described a correction method that only needed the hand controller.
Larry


--
Roland Christen
Astro-Physics


--
Roland Christen
Astro-Physics


--
Roland Christen
Astro-Physics


Re: APPM with Different Cameras

Roland Christen
 

People who have purchased the 1100/1600 in these last couple of runs have the latest software in their CP4 and keypad.

Roland

-----Original Message-----
From: W Hilmo <y.groups@...>
To: main@ap-gto.groups.io
Sent: Wed, Feb 2, 2022 5:07 pm
Subject: Re: [ap-gto] APPM with Different Cameras

Indeed.  I was asking if the updated firmware is available yet.

From your later reply, it sounds like "not yet", which is what I thought.  I just got a bit excited when you mentioned "CP4/5" below :)

-Wade

On 2/2/22 2:04 PM, Roland Christen via groups.io wrote:
CP4s are software upgrade-able.

Rolando


-----Original Message-----
From: W Hilmo <y.groups@...>
To: main@ap-gto.groups.io
Sent: Wed, Feb 2, 2022 3:56 pm
Subject: Re: [ap-gto] APPM with Different Cameras

Does the current CP4 firmware already have these features?  I hadn't heard that.

Thanks,
-Wade

On 2/2/22 1:35 PM, Roland Christen via groups.io wrote:
The latest keypad software has a built-in modeling routines, one of which is Dec arc modeling which is effective at producing the RA/Dec rates to compensate for drift in those axes for a specific object. There is also global modeling for pointing and a routine for eliminating orthogonality error. In the case of the keypad, this model resides in the CP4/5 controller, rather than on a laptop, so it can be used in the field without a laptop for someone that just wants to do imaging with a consumer digital camera. I have tested the software on a number of objects and the latest version is quite effective for unguided imaging. The only downside is that you have to do some work to pick the points and center them, whereas APCC-APPM is totally automated.

Since the keypad is a manual operation, there is the possibility of user error if you don't follow the instructions on the keypad exactly. If you make a mistake and press the wrong key, you can always exit and go back to the routine without losing the previous entries. With APPM the human input is minimal, and thus the possibility of mistakes are essentially gone.

The keypad routine for Dec arc modeling has two methods. The first is to center up to 8 points along a Dec arc where the object is located. You only need one Dec arc with 8 points, no need to bracket it. Centering is done either manually with a crosshair, or with plate solve software (which requires external software/hardware). Once all points are entered into the modeling, you simply change the keypad from Sidereal to Custom and you are off to the races.

The second method measures the actual drift rate of any given point along the Dec arc. You start by placing a crosshair on any star in the field and entering that data point. You let it drift for 5 - 10 minutes, recenter the same star and enter that point. The CP4/5 calculates the exact drift rate for that point in the sky and creates a custom rate from that. You can enter up to 8 points on a Dec line to get maximum precision. The CP4/5 draws a curve thru the points and interpolates rates between them. In practice I have entered just 3 points and gotten excellent results for 6 hours of tracking with 10 minute exposures.

Rolando

-----Original Message-----
From: Larry Phillips <llp41astro@...>
To: main@ap-gto.groups.io
Sent: Wed, Feb 2, 2022 2:00 pm
Subject: Re: [ap-gto] APPM with Different Cameras

Wade, so, I would need the latest APCC to make this work.  I have had issues with the latest one onl this computer and am awaiting some changes by Ray.  I am using 1.9.0.11 so I guess this option is on hold for me.  However, I thought Roland had described a correction method that only needed the hand controller.
Larry

--
Roland Christen
Astro-Physics

--
Roland Christen
Astro-Physics

--
Roland Christen
Astro-Physics


Re: APPM with Different Cameras

W Hilmo
 

Indeed.  I was asking if the updated firmware is available yet.

From your later reply, it sounds like "not yet", which is what I thought.  I just got a bit excited when you mentioned "CP4/5" below :)

-Wade

On 2/2/22 2:04 PM, Roland Christen via groups.io wrote:

CP4s are software upgrade-able.

Rolando


-----Original Message-----
From: W Hilmo <y.groups@...>
To: main@ap-gto.groups.io
Sent: Wed, Feb 2, 2022 3:56 pm
Subject: Re: [ap-gto] APPM with Different Cameras

Does the current CP4 firmware already have these features?  I hadn't heard that.

Thanks,
-Wade

On 2/2/22 1:35 PM, Roland Christen via groups.io wrote:
The latest keypad software has a built-in modeling routines, one of which is Dec arc modeling which is effective at producing the RA/Dec rates to compensate for drift in those axes for a specific object. There is also global modeling for pointing and a routine for eliminating orthogonality error. In the case of the keypad, this model resides in the CP4/5 controller, rather than on a laptop, so it can be used in the field without a laptop for someone that just wants to do imaging with a consumer digital camera. I have tested the software on a number of objects and the latest version is quite effective for unguided imaging. The only downside is that you have to do some work to pick the points and center them, whereas APCC-APPM is totally automated.

Since the keypad is a manual operation, there is the possibility of user error if you don't follow the instructions on the keypad exactly. If you make a mistake and press the wrong key, you can always exit and go back to the routine without losing the previous entries. With APPM the human input is minimal, and thus the possibility of mistakes are essentially gone.

The keypad routine for Dec arc modeling has two methods. The first is to center up to 8 points along a Dec arc where the object is located. You only need one Dec arc with 8 points, no need to bracket it. Centering is done either manually with a crosshair, or with plate solve software (which requires external software/hardware). Once all points are entered into the modeling, you simply change the keypad from Sidereal to Custom and you are off to the races.

The second method measures the actual drift rate of any given point along the Dec arc. You start by placing a crosshair on any star in the field and entering that data point. You let it drift for 5 - 10 minutes, recenter the same star and enter that point. The CP4/5 calculates the exact drift rate for that point in the sky and creates a custom rate from that. You can enter up to 8 points on a Dec line to get maximum precision. The CP4/5 draws a curve thru the points and interpolates rates between them. In practice I have entered just 3 points and gotten excellent results for 6 hours of tracking with 10 minute exposures.

Rolando

-----Original Message-----
From: Larry Phillips <llp41astro@...>
To: main@ap-gto.groups.io
Sent: Wed, Feb 2, 2022 2:00 pm
Subject: Re: [ap-gto] APPM with Different Cameras

Wade, so, I would need the latest APCC to make this work.  I have had issues with the latest one onl this computer and am awaiting some changes by Ray.  I am using 1.9.0.11 so I guess this option is on hold for me.  However, I thought Roland had described a correction method that only needed the hand controller.
Larry

--
Roland Christen
Astro-Physics

--
Roland Christen
Astro-Physics


Re: APPM with Different Cameras

Roland Christen
 

The software will be available. I don't know the timeline but they are working on it. Has to do with the software key to allow useage.

Roland

-----Original Message-----
From: Konstantin von Poschinger <KPoschinger@...>
To: main@ap-gto.groups.io
Sent: Wed, Feb 2, 2022 4:51 pm
Subject: Re: [ap-gto] APPM with Different Cameras

Hi Roland,

have you changed something? I have asked for the using of the new futures already but you said that it will only work for the Mach2 and the CP5. So I would like to test it also with a CP4 and my AP1100 an AP1600. Can you tell me the software versions I would need for the keypad and perhaps for the CP4.

Konstantin

Konstantin v. Poschinger

Hammerichstr. 5
22605 Hamburg
040/8805747
0171 1983476

Am 02.02.2022 um 23:04 schrieb Roland Christen via groups.io <chris1011@...>:

CP4s are software upgrade-able.

Rolando


-----Original Message-----
From: W Hilmo <y.groups@...>
To: main@ap-gto.groups.io
Sent: Wed, Feb 2, 2022 3:56 pm
Subject: Re: [ap-gto] APPM with Different Cameras

Does the current CP4 firmware already have these features?  I hadn't heard that.

Thanks,
-Wade

On 2/2/22 1:35 PM, Roland Christen via groups.io wrote:
The latest keypad software has a built-in modeling routines, one of which is Dec arc modeling which is effective at producing the RA/Dec rates to compensate for drift in those axes for a specific object. There is also global modeling for pointing and a routine for eliminating orthogonality error. In the case of the keypad, this model resides in the CP4/5 controller, rather than on a laptop, so it can be used in the field without a laptop for someone that just wants to do imaging with a consumer digital camera. I have tested the software on a number of objects and the latest version is quite effective for unguided imaging. The only downside is that you have to do some work to pick the points and center them, whereas APCC-APPM is totally automated.

Since the keypad is a manual operation, there is the possibility of user error if you don't follow the instructions on the keypad exactly. If you make a mistake and press the wrong key, you can always exit and go back to the routine without losing the previous entries. With APPM the human input is minimal, and thus the possibility of mistakes are essentially gone.

The keypad routine for Dec arc modeling has two methods. The first is to center up to 8 points along a Dec arc where the object is located. You only need one Dec arc with 8 points, no need to bracket it. Centering is done either manually with a crosshair, or with plate solve software (which requires external software/hardware). Once all points are entered into the modeling, you simply change the keypad from Sidereal to Custom and you are off to the races.

The second method measures the actual drift rate of any given point along the Dec arc. You start by placing a crosshair on any star in the field and entering that data point. You let it drift for 5 - 10 minutes, recenter the same star and enter that point. The CP4/5 calculates the exact drift rate for that point in the sky and creates a custom rate from that. You can enter up to 8 points on a Dec line to get maximum precision. The CP4/5 draws a curve thru the points and interpolates rates between them. In practice I have entered just 3 points and gotten excellent results for 6 hours of tracking with 10 minute exposures.

Rolando

-----Original Message-----
From: Larry Phillips <llp41astro@...>
To: main@ap-gto.groups.io
Sent: Wed, Feb 2, 2022 2:00 pm
Subject: Re: [ap-gto] APPM with Different Cameras

Wade, so, I would need the latest APCC to make this work.  I have had issues with the latest one onl this computer and am awaiting some changes by Ray.  I am using 1.9.0.11 so I guess this option is on hold for me.  However, I thought Roland had described a correction method that only needed the hand controller.
Larry

--
Roland Christen
Astro-Physics

--
Roland Christen
Astro-Physics


--
Roland Christen
Astro-Physics


Re: APPM with Different Cameras

Larry Phillips
 

Thanks Roland.
Larry


Re: APPM with Different Cameras

Konstantin von Poschinger
 

Hi Roland,

have you changed something? I have asked for the using of the new futures already but you said that it will only work for the Mach2 and the CP5. So I would like to test it also with a CP4 and my AP1100 an AP1600. Can you tell me the software versions I would need for the keypad and perhaps for the CP4.

Konstantin

Konstantin v. Poschinger

Hammerichstr. 5
22605 Hamburg
040/8805747
0171 1983476

Am 02.02.2022 um 23:04 schrieb Roland Christen via groups.io <chris1011@...>:

CP4s are software upgrade-able.

Rolando


-----Original Message-----
From: W Hilmo <y.groups@...>
To: main@ap-gto.groups.io
Sent: Wed, Feb 2, 2022 3:56 pm
Subject: Re: [ap-gto] APPM with Different Cameras

Does the current CP4 firmware already have these features?  I hadn't heard that.

Thanks,
-Wade

On 2/2/22 1:35 PM, Roland Christen via groups.io wrote:
The latest keypad software has a built-in modeling routines, one of which is Dec arc modeling which is effective at producing the RA/Dec rates to compensate for drift in those axes for a specific object. There is also global modeling for pointing and a routine for eliminating orthogonality error. In the case of the keypad, this model resides in the CP4/5 controller, rather than on a laptop, so it can be used in the field without a laptop for someone that just wants to do imaging with a consumer digital camera. I have tested the software on a number of objects and the latest version is quite effective for unguided imaging. The only downside is that you have to do some work to pick the points and center them, whereas APCC-APPM is totally automated.

Since the keypad is a manual operation, there is the possibility of user error if you don't follow the instructions on the keypad exactly. If you make a mistake and press the wrong key, you can always exit and go back to the routine without losing the previous entries. With APPM the human input is minimal, and thus the possibility of mistakes are essentially gone.

The keypad routine for Dec arc modeling has two methods. The first is to center up to 8 points along a Dec arc where the object is located. You only need one Dec arc with 8 points, no need to bracket it. Centering is done either manually with a crosshair, or with plate solve software (which requires external software/hardware). Once all points are entered into the modeling, you simply change the keypad from Sidereal to Custom and you are off to the races.

The second method measures the actual drift rate of any given point along the Dec arc. You start by placing a crosshair on any star in the field and entering that data point. You let it drift for 5 - 10 minutes, recenter the same star and enter that point. The CP4/5 calculates the exact drift rate for that point in the sky and creates a custom rate from that. You can enter up to 8 points on a Dec line to get maximum precision. The CP4/5 draws a curve thru the points and interpolates rates between them. In practice I have entered just 3 points and gotten excellent results for 6 hours of tracking with 10 minute exposures.

Rolando

-----Original Message-----
From: Larry Phillips <llp41astro@...>
To: main@ap-gto.groups.io
Sent: Wed, Feb 2, 2022 2:00 pm
Subject: Re: [ap-gto] APPM with Different Cameras

Wade, so, I would need the latest APCC to make this work.  I have had issues with the latest one onl this computer and am awaiting some changes by Ray.  I am using 1.9.0.11 so I guess this option is on hold for me.  However, I thought Roland had described a correction method that only needed the hand controller.
Larry

--
Roland Christen
Astro-Physics

--
Roland Christen
Astro-Physics


Re: APPM with Different Cameras

Roland Christen
 

CP4s are software upgrade-able.

Rolando


-----Original Message-----
From: W Hilmo <y.groups@...>
To: main@ap-gto.groups.io
Sent: Wed, Feb 2, 2022 3:56 pm
Subject: Re: [ap-gto] APPM with Different Cameras

Does the current CP4 firmware already have these features?  I hadn't heard that.

Thanks,
-Wade

On 2/2/22 1:35 PM, Roland Christen via groups.io wrote:
The latest keypad software has a built-in modeling routines, one of which is Dec arc modeling which is effective at producing the RA/Dec rates to compensate for drift in those axes for a specific object. There is also global modeling for pointing and a routine for eliminating orthogonality error. In the case of the keypad, this model resides in the CP4/5 controller, rather than on a laptop, so it can be used in the field without a laptop for someone that just wants to do imaging with a consumer digital camera. I have tested the software on a number of objects and the latest version is quite effective for unguided imaging. The only downside is that you have to do some work to pick the points and center them, whereas APCC-APPM is totally automated.

Since the keypad is a manual operation, there is the possibility of user error if you don't follow the instructions on the keypad exactly. If you make a mistake and press the wrong key, you can always exit and go back to the routine without losing the previous entries. With APPM the human input is minimal, and thus the possibility of mistakes are essentially gone.

The keypad routine for Dec arc modeling has two methods. The first is to center up to 8 points along a Dec arc where the object is located. You only need one Dec arc with 8 points, no need to bracket it. Centering is done either manually with a crosshair, or with plate solve software (which requires external software/hardware). Once all points are entered into the modeling, you simply change the keypad from Sidereal to Custom and you are off to the races.

The second method measures the actual drift rate of any given point along the Dec arc. You start by placing a crosshair on any star in the field and entering that data point. You let it drift for 5 - 10 minutes, recenter the same star and enter that point. The CP4/5 calculates the exact drift rate for that point in the sky and creates a custom rate from that. You can enter up to 8 points on a Dec line to get maximum precision. The CP4/5 draws a curve thru the points and interpolates rates between them. In practice I have entered just 3 points and gotten excellent results for 6 hours of tracking with 10 minute exposures.

Rolando

-----Original Message-----
From: Larry Phillips <llp41astro@...>
To: main@ap-gto.groups.io
Sent: Wed, Feb 2, 2022 2:00 pm
Subject: Re: [ap-gto] APPM with Different Cameras

Wade, so, I would need the latest APCC to make this work.  I have had issues with the latest one onl this computer and am awaiting some changes by Ray.  I am using 1.9.0.11 so I guess this option is on hold for me.  However, I thought Roland had described a correction method that only needed the hand controller.
Larry

--
Roland Christen
Astro-Physics

--
Roland Christen
Astro-Physics


Re: APPM with Different Cameras

W Hilmo
 

Does the current CP4 firmware already have these features?  I hadn't heard that.

Thanks,
-Wade

On 2/2/22 1:35 PM, Roland Christen via groups.io wrote:

The latest keypad software has a built-in modeling routines, one of which is Dec arc modeling which is effective at producing the RA/Dec rates to compensate for drift in those axes for a specific object. There is also global modeling for pointing and a routine for eliminating orthogonality error. In the case of the keypad, this model resides in the CP4/5 controller, rather than on a laptop, so it can be used in the field without a laptop for someone that just wants to do imaging with a consumer digital camera. I have tested the software on a number of objects and the latest version is quite effective for unguided imaging. The only downside is that you have to do some work to pick the points and center them, whereas APCC-APPM is totally automated.

Since the keypad is a manual operation, there is the possibility of user error if you don't follow the instructions on the keypad exactly. If you make a mistake and press the wrong key, you can always exit and go back to the routine without losing the previous entries. With APPM the human input is minimal, and thus the possibility of mistakes are essentially gone.

The keypad routine for Dec arc modeling has two methods. The first is to center up to 8 points along a Dec arc where the object is located. You only need one Dec arc with 8 points, no need to bracket it. Centering is done either manually with a crosshair, or with plate solve software (which requires external software/hardware). Once all points are entered into the modeling, you simply change the keypad from Sidereal to Custom and you are off to the races.

The second method measures the actual drift rate of any given point along the Dec arc. You start by placing a crosshair on any star in the field and entering that data point. You let it drift for 5 - 10 minutes, recenter the same star and enter that point. The CP4/5 calculates the exact drift rate for that point in the sky and creates a custom rate from that. You can enter up to 8 points on a Dec line to get maximum precision. The CP4/5 draws a curve thru the points and interpolates rates between them. In practice I have entered just 3 points and gotten excellent results for 6 hours of tracking with 10 minute exposures.

Rolando

-----Original Message-----
From: Larry Phillips <llp41astro@...>
To: main@ap-gto.groups.io
Sent: Wed, Feb 2, 2022 2:00 pm
Subject: Re: [ap-gto] APPM with Different Cameras

Wade, so, I would need the latest APCC to make this work.  I have had issues with the latest one onl this computer and am awaiting some changes by Ray.  I am using 1.9.0.11 so I guess this option is on hold for me.  However, I thought Roland had described a correction method that only needed the hand controller.
Larry

--
Roland Christen
Astro-Physics


Re: APPM with Different Cameras

Roland Christen
 

The latest keypad software has a built-in modeling routines, one of which is Dec arc modeling which is effective at producing the RA/Dec rates to compensate for drift in those axes for a specific object. There is also global modeling for pointing and a routine for eliminating orthogonality error. In the case of the keypad, this model resides in the CP4/5 controller, rather than on a laptop, so it can be used in the field without a laptop for someone that just wants to do imaging with a consumer digital camera. I have tested the software on a number of objects and the latest version is quite effective for unguided imaging. The only downside is that you have to do some work to pick the points and center them, whereas APCC-APPM is totally automated.

Since the keypad is a manual operation, there is the possibility of user error if you don't follow the instructions on the keypad exactly. If you make a mistake and press the wrong key, you can always exit and go back to the routine without losing the previous entries. With APPM the human input is minimal, and thus the possibility of mistakes are essentially gone.

The keypad routine for Dec arc modeling has two methods. The first is to center up to 8 points along a Dec arc where the object is located. You only need one Dec arc with 8 points, no need to bracket it. Centering is done either manually with a crosshair, or with plate solve software (which requires external software/hardware). Once all points are entered into the modeling, you simply change the keypad from Sidereal to Custom and you are off to the races.

The second method measures the actual drift rate of any given point along the Dec arc. You start by placing a crosshair on any star in the field and entering that data point. You let it drift for 5 - 10 minutes, recenter the same star and enter that point. The CP4/5 calculates the exact drift rate for that point in the sky and creates a custom rate from that. You can enter up to 8 points on a Dec line to get maximum precision. The CP4/5 draws a curve thru the points and interpolates rates between them. In practice I have entered just 3 points and gotten excellent results for 6 hours of tracking with 10 minute exposures.

Rolando

-----Original Message-----
From: Larry Phillips <llp41astro@...>
To: main@ap-gto.groups.io
Sent: Wed, Feb 2, 2022 2:00 pm
Subject: Re: [ap-gto] APPM with Different Cameras

Wade, so, I would need the latest APCC to make this work.  I have had issues with the latest one onl this computer and am awaiting some changes by Ray.  I am using 1.9.0.11 so I guess this option is on hold for me.  However, I thought Roland had described a correction method that only needed the hand controller.
Larry

--
Roland Christen
Astro-Physics


Re: Fw: [ap-gto] large donut in Ha image

Andrea Lucchetti
 

When I had this issue was due to a bright star slightly off the sensor field. Very common in Orion region. I saw the same with apo and newton, of course the shape changes because of central obstruction.
Andrea 

On Wed, 2 Feb 2022 at 21:29, david w pearson via groups.io <p.davidw=yahoo.com@groups.io> wrote:
anyone have any experience with large Donut in image as to where is it is occurring?
have included animation to show strange intensity variability and with features within the donut.



----- Forwarded Message ----To: main@ap-gto.groups.io <main@ap-gto.groups.io>
Sent: Sunday, January 30, 2022, 06:29:52 PM PST
Subject: Re: Re: [ap-gto] large donut in Ha image

TPO RC-12, SBIG STF-8300m with filter wheel w 37mm filters, AP 0.67x reducer, shooting at 1700mm, off axis guider, AP1200 mount on permanent pier
group observatory, 10 min consecutive ha subs

animation link





Re: Anderson plugs

Woody Schlom
 

Luke,

 

Got it.  Makes perfect sense.  I do recall Dean’s from my brief RC car days.

 

But I need to correct my information regarding the wire sizes for PP crimps.  I just looked it up.

 

15 amp crimp is for 16 – 20 ga. wire.

30 amp crimp is for 12 – 14 ga. wire.

45 amp crimp is for 10 ga. wire.

 

So you’ll probably need the 15 amp crimps for up to 16 ga. wire.  Most of my Astro accessories use those 5.5mm x 2.1 or 5.5mm x 2.5mm coaxial DC connectors, so I’m pretty much limited to 18 ga. wire.  Those little coaxial connectors don’t much like 16 ga. wire.

 

One last suggestion.  Don’t waste your time trying to find, buy, and use a crimp die for these connectors that will fit your Paladin/Greenlee crimper.  Yes, they have (or used to have) a die the proper size.  But it’s narrower than the PP crimp collars.  And crimping twice didn’t work out for me either.  So I finally bought the cheap crimper Powerwerx sells – no more problems.

 

Learning how these crimps work is important.  You must orient the crimp to the tool correctly.  There’s correct and there’s upside down.  And same thing for how the finished crimps go into the plastic housing.  There’s correct and there’s upside down.

 

Have fun as you wait for your 1600.

 

Woody

 

From: main@ap-gto.groups.io <main@ap-gto.groups.io> On Behalf Of Luke Dodd
Sent: Wednesday, February 2, 2022 1:16 AM
To: main@ap-gto.groups.io
Subject: Re: [ap-gto] Anderson plugs

 

Woody,

 

I am making up some cables for the 1600 I have on order to connect to my DC power supply, and will swap-out the Deans connectors I am using atm with my AP1200 over to the powerpoles. I use a lot of connectors in my RC electric aircraft, some with a power output of 7kW. I was ordering some powerpoles on line and noted they come in 15/30 and 45A options. With connectors such as XT’s I use with RC stuff they come in 30/60/90A etc same basic shape but the connectors are different sizes. You have basically answered my question the powerpoles in the 15-45A range all connect to each other and are Genderless.

 

Luke

 

Sent from Mail for Windows

 

From: Woody Schlom
Sent: Wednesday, 2 February 2022 5:28 PM
To: main@ap-gto.groups.io
Subject: Re: [ap-gto] Anderson plugs

 

Luke,

 

Not sure why you’re asking this.  The size of PP connectors AP uses can have 15, 30, or 45 amp wires/crimps.  The amps of the crimps relates to the wire size each crimp size is made for.  But the red/black plastic plugs are all the same – and all plug into each other.

 

For example.  If your cable is 18 ga., then you use the 15 amp crimps.  But if your wire size is 14 ga, you use the 30 amp crimps.  And either way, they both use the exact same red/black plastic PP housings.

 

And yes, you can have a cable with 15 amp crimps and 18 ga. wire – and plug it into PP connectors from a cable with 30 amp crimps inside it.

 

I make my own.  But as I recall, the pre-made cables from Powerwerx only come with 18 ga. wire.

 

Woody

 

From: main@ap-gto.groups.io <main@ap-gto.groups.io> On Behalf Of Luke Dodd
Sent: Tuesday, February 1, 2022 10:50 PM
To: main@ap-gto.groups.io
Subject: [ap-gto] Anderson plugs

 

Are the andersons plugs used on the power cables supplied by AP for their mounts 15A or 30A. Thanks

 


Fw: [ap-gto] large donut in Ha image

david w pearson
 

anyone have any experience with large Donut in image as to where is it is occurring?
have included animation to show strange intensity variability and with features within the donut.



----- Forwarded Message ----To: main@ap-gto.groups.io <main@ap-gto.groups.io>
Sent: Sunday, January 30, 2022, 06:29:52 PM PST
Subject: Re: Re: [ap-gto] large donut in Ha image

TPO RC-12, SBIG STF-8300m with filter wheel w 37mm filters, AP 0.67x reducer, shooting at 1700mm, off axis guider, AP1200 mount on permanent pier
group observatory, 10 min consecutive ha subs

animation link





Re: APPM with Different Cameras

W Hilmo
 

I don't remember for sure, but wasn't 1.9.0.11 the version that introduced the new payment model?  If so, it should have the feature available.

Otherwise, if you have a Mach2 with the CP5 controller and a keypad, there is a tracking model available via the keypad.  I think that it's also a dec arc tracking method.  I don't have a Mach2 (yet), and they've not yet ported the CP5 new features to the CP4, so I can't give you the specific steps to do it.

-Wade

On 2/2/22 12:00 PM, Larry Phillips wrote:

Wade, so, I would need the latest APCC to make this work.  I have had issues with the latest one onl this computer and am awaiting some changes by Ray.  I am using 1.9.0.11 so I guess this option is on hold for me.  However, I thought Roland had described a correction method that only needed the hand controller.
Larry


Re: APPM with Different Cameras

Larry Phillips
 

Wade, so, I would need the latest APCC to make this work.  I have had issues with the latest one onl this computer and am awaiting some changes by Ray.  I am using 1.9.0.11 so I guess this option is on hold for me.  However, I thought Roland had described a correction method that only needed the hand controller.
Larry


Re: APPM with Different Cameras

Roland Christen
 

The Mach2 has encoders so the axes will be in the same position regardless of moment arm or lead. Different scopes and camera combinations will affect the flexure of the optical axis, which the mount has no control over. So, yes, changing the camera/scope combination might affect the model due to flexure.

Roland

-----Original Message-----
From: Larry Phillips <llp41astro@...>
To: main@ap-gto.groups.io
Sent: Wed, Feb 2, 2022 8:52 am
Subject: Re: [ap-gto] APPM with Different Cameras

What about the possible change in the weight or moment arm of the new scope/camera combination?  Could this affect the pointing for a Mach2?
Larry

--
Roland Christen
Astro-Physics


Re: APPM with Different Cameras

W Hilmo
 

Enabling dec arc tracking is just a simple checkbox on the Pointing Model tab in APCC Pro.  It's right at the bottom of the "Tracking Correction Status" section of the screen.  Note that this is one of the features that requires that your subscription is current as of about a year ago.

Once dec arc tracking is enabled, it will work with any pointing model that's installed.  So if you have an observatory and have done a huge model, you can enable it, and it will use the existing model.

But the dec arc tracking feature, by its nature, only needs a pointing model that includes samples along your target's declination path.  So to create a model, I configure APPM with 5 degree RA separation and a narrowly constrained range of declination limits.  I enable the "Show Points" feature and then tweak the settings until I get samples along 3 arcs, one right on the target declination, and one a couple of degrees above and a couple of degrees below.  I usually end up with between 20 and 25 points total.

As far as I know, the NINA integration to automatically create the APPM model is still a work in progress.  Dale Ghent (who participates on this forum) is working on the plug-in.

-Wade

On 2/2/22 7:11 AM, Larry Phillips wrote:

Wade, interesting idea.  I have read Roland's posts about this but did not pay much attention.  Can you tell me where to find the procedure?
Larry


Re: APPM with Different Cameras

Larry Phillips
 

Wade, interesting idea.  I have read Roland's posts about this but did not pay much attention.  Can you tell me where to find the procedure?
Larry


Re: APPM with Different Cameras

W Hilmo
 

When I switch cameras, I'm pretty much always also switching the telescope.

I suspect that my mount behaves identically, regardless of which OTA/camera that I am using.  I still create a new model when I switch, since the model captures the characteristics of the entire system, including the OTA (which can definitely affect the results).

Actually, I'm really becoming a fan of the dec arc tracking model.  It takes between 5 and 10 minutes to create a dec arc specific to my target, and it can be done so early in the evening, that the sky is still visibly too bright to start productive imaging.  Ultimately, NINA will be able to simply create the dec arc model as a part of the automation.

Since switching to the dec arc modeling, I've not created a huge APPM model at all.

-Wade

On 2/2/22 6:52 AM, Larry Phillips wrote:

What about the possible change in the weight or moment arm of the new scope/camera combination?  Could this affect the pointing for a Mach2?
Larry


Re: Upgrade to Latest APCC

midmoastro
 

Larry,
I am running 1.9.3.3 on the latest Win11 and so far I have not had issues. That said, please proceed at your own risk.
Todd

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