Date   

Re: APCC meridian limits

Konstantin von Poschinger
 

Ray,

that would be great!!
You have to think for one special thing. If dithering is moving the mount a little bit it shouldn’t force a flip.

Konstantin


Konstantin v. Poschinger

Hammerichstr. 5
22605 Hamburg
040/8805747
0171 1983476

Am 27.08.2018 um 16:53 schrieb 'Ray Gralak (Groups)' groups3@... [ap-gto] <ap-gto@...>:

Konstantin,

> that is exactly what I want. Can I force this behavior withe the existing setting 
> and if yes how they look like?

No, unfortunately to get this behavior requires more than just defining the East/West limits appropriately. However, there is an upcoming new APCC release so if A-P is ok with adding this mode to APCC I think it would be simple to implement.

-Ray Gralak
Author of APCC (Astro-Physics Command Center): http://www.astro-physics.com/index.htm?products/accessories/software/apcc/apcc 
Author of PEMPro V3:  https://www.ccdware.com
Author of Astro-Physics V2 ASCOM Driver: https://www.siriusimaging.com/apdriver

> -----Original Message-----
> From: ap-gto@... [mailto:ap-gto@...]
> Sent: Monday, August 27, 2018 7:26 AM
> To: ap-gto@...
> Subject: Re: [ap-gto] Re: APCC meridian limits
> 
> 
> 
> Ray,
> 
> that is exactly what I want. Can I force this behavior withe the existing setting and if yes how they look like?
> 
> Konstantin
> 
> 
> Konstantin v. Poschinger
> 
> Hammerichstr. 5
> 22605 Hamburg
> 040/8805747
> 0171 1983476
> 
> 
> Am 27.08.2018 um 16:18 schrieb 'Ray Gralak (Groups)' groups3@... [ap-gto] > gto@...>:
> 
> 
> Paul,
> 
> > OK. Thanks for your time Ray. I'll contact AP to iron things out.
> 
> For what it is worth, this thread has also invoked an idea of a new mode that may make the use of this
> scenario work better. The new mode would simply use the East limits for meridian dela y for both pier sides but
> leave the West limits as positive values that would trigger a limit to stop tracking, etc.
> 
> For targets East of the meridian and within the East limit for its declination this new mode would perform a
> counterweight up slew to the target. If the target is further East, outside the limit (closer to the Horizon), a slew to
> the target would instead be a normal counterweight-down slew. The West tracking limit would stay the same,
> allowing the mount to track past the East limit, the meridian, and all the way to the West limit (as it would normally
> do).
> 
> Best regards,
> 
> -Ray Gralak
> Author of APCC (Astro-Physics Command Center): http://www.astro-
> physics.com/index.htm?products/accessorie s/software/apcc/apcc <http://www.astro-
> physics.com/index.htm?products/accessories/software/apcc/apcc>
> Author of PEMPro V3:  https://www.ccdware.com <https://www.ccdware.com/>
> Author of Astro-Physics V2 ASCOM Driver: https://www.siriusimaging.com/apdriver
> 
> > -----Original Message-----
> > From: ap-gto@... [mailto:ap-gto@...]
> > Sent: Monday, August 27, 2018 6:01 AM
> > To: ap-gto@...
> > Subject: RE: [ap-gto] Re: APCC meridian limits
> >
> >
> >
> > OK. Thanks for your time Ray. I'll contact AP to iron things out.
> > Regards,
> > Paul
> >
> >
> 
> 
> 
> 
> 



Re: APCC meridian limits

Roland Christen
 

Hi Ray,

Why would we not be ok with it?

Rolando



-----Original Message-----
From: 'Ray Gralak (Groups)' groups3@... [ap-gto]
To: ap-gto
Sent: Mon, Aug 27, 2018 10:07 am
Subject: RE: [ap-gto] Re: APCC meridian limits

Konstantin,

> that is exactly what I want. Can I force this behavior withe the existing setting
> and if yes how they look like?

No, unfortunately to get this behavior requires more than just defining the East/West limits appropriately. However, there is an upcoming new APCC release so if A-P is ok with adding this mode to APCC I think it would be simple to implement.

-Ray Gralak
Author of APCC (Astro-Physics Command Center): http://www.astro-physics.com/index.htm?products/accessories/software/apcc/apcc
Author of PEMPro V3: https://www.ccdware.com
Author of Astro-Physics V2 ASCOM Driver: https://www.siriusimaging.com/apdriver


> -----Original Message-----
> From: ap-gto@... [mailto:ap-gto@...]
> Sent: Monday, August 27, 2018 7:26 AM
> To: ap-gto@...
> Subject: Re: [ap-gto] Re: APCC meridian limits
>
>
>
> Ray,
>
> that is exactly what I want. Can I force this behavior withe the existing setting and if yes how they look like?
>
> Konstantin
>
>
> Konstantin v. Poschinger
>
> Hammerichstr. 5
> 22605 Hamburg
> 040/8805747
> 0171 1983476
>
>
> Am 27.08.2018 um 16:18 schrieb 'Ray Gralak (Groups)' groups3@... [ap-gto] > gto@...>:
>
>
> Paul,
>
> > OK. Thanks for your time Ray. I'll contact AP to iron things out.
>
> For what it is worth, this thread has also invoked an idea of a new mode that may make the use of this
> scenario work better. The new mode would simply use the East limits for meridian dela y for both pier sides but
> leave the West limits as positive values that would trigger a limit to stop tracking, etc.
>
> For targets East of the meridian and within the East limit for its declination this new mode would perform a
> counterweight up slew to the target. If the target is further East, outside the limit (closer to the Horizon), a slew to
> the target would instead be a normal counterweight-down slew. The West tracking limit would stay the same,
> allowing the mount to track past the East limit, the meridian, and all the way to the West limit (as it would normally
> do).
>
> Best regards,
>
> -Ray Gralak
> Author of APCC (Astro-Physics Command Center): http://www.astro-
> physics.com/index.htm?products/accessorie s/software/apcc/apcc <http://www.astro-
> physics.com/index.htm?products/accessories/software/apcc/apcc>
> Author of PEMPro V3: https://www.ccdware.com <https://www.ccdware.com/>
> Author of Astro-Physics V2 ASCOM Driver: https://www.siriusimaging.com/apdriver
>
> > -----Original Message-----
> > From: ap-gto@... [mailto:ap-gto@...]
> > Sent: Monday, August 27, 2018 6:01 AM
> > To: ap-gto@...
> > Subject: RE: [ap-gto] Re: APCC meridian limits
> >
> >
> >
> > OK. Thanks for your time Ray. I'll contact AP to iron things out.
> > Regards,
> > Paul
> >
> >
>
>
>
>
>



------------------------------------
Posted by: "Ray Gralak \(Groups\)" <groups3@...>
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Re: APCC meridian limits

Keith Olsen
 

Ray - That would be a fantastic new feature!   I would use that for sure.


Re: Daytime Alignment without Park1?

Roland Christen
 

Park 4 will work just like Park1.

Rolando



-----Original Message-----
From: wayneh9026@... [ap-gto]
To: ap-gto
Sent: Sun, Aug 26, 2018 8:31 pm
Subject: [ap-gto] Daytime Alignment without Park1?

I see Park1 is no longer recommended, but I haven’t seen a revised daytime alignment process without it. I’m assuming Park4 will work, but not sure. Thanks, Wayne ------------------------------------ Posted by: wayneh9026@... ------------------------------------


Re: APCC meridian limits

Ray Gralak
 

Konstantin,

that is exactly what I want. Can I force this behavior withe the existing setting
and if yes how they look like?
No, unfortunately to get this behavior requires more than just defining the East/West limits appropriately. However, there is an upcoming new APCC release so if A-P is ok with adding this mode to APCC I think it would be simple to implement.

-Ray Gralak
Author of APCC (Astro-Physics Command Center): http://www.astro-physics.com/index.htm?products/accessories/software/apcc/apcc
Author of PEMPro V3: https://www.ccdware.com
Author of Astro-Physics V2 ASCOM Driver: https://www.siriusimaging.com/apdriver


-----Original Message-----
From: ap-gto@... [mailto:ap-gto@...]
Sent: Monday, August 27, 2018 7:26 AM
To: ap-gto@...
Subject: Re: [ap-gto] Re: APCC meridian limits



Ray,

that is exactly what I want. Can I force this behavior withe the existing setting and if yes how they look like?

Konstantin


Konstantin v. Poschinger

Hammerichstr. 5
22605 Hamburg
040/8805747
0171 1983476


Am 27.08.2018 um 16:18 schrieb 'Ray Gralak (Groups)' groups3@... [ap-gto] <ap-
gto@...>:


Paul,

> OK. Thanks for your time Ray. I'll contact AP to iron things out.

For what it is worth, this thread has also invoked an idea of a new mode that may make the use of this
scenario work better. The new mode would simply use the East limits for meridian dela y for both pier sides but
leave the West limits as positive values that would trigger a limit to stop tracking, etc.

For targets East of the meridian and within the East limit for its declination this new mode would perform a
counterweight up slew to the target. If the target is further East, outside the limit (closer to the Horizon), a slew to
the target would instead be a normal counterweight-down slew. The West tracking limit would stay the same,
allowing the mount to track past the East limit, the meridian, and all the way to the West limit (as it would normally
do).

Best regards,

-Ray Gralak
Author of APCC (Astro-Physics Command Center): http://www.astro-
physics.com/index.htm?products/accessorie s/software/apcc/apcc <http://www.astro-
physics.com/index.htm?products/accessories/software/apcc/apcc>
Author of PEMPro V3: https://www.ccdware.com <https://www.ccdware.com/>
Author of Astro-Physics V2 ASCOM Driver: https://www.siriusimaging.com/apdriver

> -----Original Message-----
> From: ap-gto@... [mailto:ap-gto@...]
> Sent: Monday, August 27, 2018 6:01 AM
> To: ap-gto@...
> Subject: RE: [ap-gto] Re: APCC meridian limits
>
>
>
> OK. Thanks for your time Ray. I'll contact AP to iron things out.
> Regards,
> Paul
>
>





Re: APCC meridian limits

Konstantin von Poschinger
 

Ray,

that is exactly what I want. Can I force this behavior withe the existing setting and if yes how they look like?

Konstantin


Konstantin v. Poschinger

Hammerichstr. 5
22605 Hamburg
040/8805747
0171 1983476

Am 27.08.2018 um 16:18 schrieb 'Ray Gralak (Groups)' groups3@... [ap-gto] <ap-gto@...>:

Paul,

> OK. Thanks for your time Ray. I'll contact AP to iron things out.

For what it is worth, this thread has also invoked an idea of a new mode that may make the use of this scenario work better. The new mode would simply use the East limits for meridian delay for both pier sides but leave the West limits as positive values that would trigger a limit to stop tracking, etc. 

For targets East of the meridian and within the East limit for its declination this new mode would perform a counterweight up slew to the target. If the target is further East, outside the limit (closer to the Horizon), a slew to the target would instead be a normal counterweight-down slew. The West tracking limit would stay the same, allowing the mount to track past the East limit, the meridian, and all the way to the West limit (as it would normally do).

Best regards,

-Ray Gralak
Author of APCC (Astro-Physics Command Center): http://www.astro-physics.com/index.htm?products/accessories/software/apcc/apcc 
Author of PEMPro V3:  https://www.ccdware.com
Author of Astro-Physics V2 ASCOM Driver: https://www.siriusimaging.com/apdriver

> -----Original Message-----
> From: ap-gto@... [mailto:ap-gto@...]
> Sent: Monday, August 27, 2018 6:01 AM
> To: ap-gto@...
> Subject: RE: [ap-gto] Re: APCC meridian limits
> 
> 
> 
> OK. Thanks for your time Ray. I'll contact AP to iron things out.
> Regards,
> Paul
> 
> 



Re: APCC meridian limits

Ray Gralak
 

Paul,

OK. Thanks for your time Ray. I'll contact AP to iron things out.
For what it is worth, this thread has also invoked an idea of a new mode that may make the use of this scenario work better. The new mode would simply use the East limits for meridian delay for both pier sides but leave the West limits as positive values that would trigger a limit to stop tracking, etc.

For targets East of the meridian and within the East limit for its declination this new mode would perform a counterweight up slew to the target. If the target is further East, outside the limit (closer to the Horizon), a slew to the target would instead be a normal counterweight-down slew. The West tracking limit would stay the same, allowing the mount to track past the East limit, the meridian, and all the way to the West limit (as it would normally do).

Best regards,

-Ray Gralak
Author of APCC (Astro-Physics Command Center): http://www.astro-physics.com/index.htm?products/accessories/software/apcc/apcc
Author of PEMPro V3: https://www.ccdware.com
Author of Astro-Physics V2 ASCOM Driver: https://www.siriusimaging.com/apdriver


-----Original Message-----
From: ap-gto@... [mailto:ap-gto@...]
Sent: Monday, August 27, 2018 6:01 AM
To: ap-gto@...
Subject: RE: [ap-gto] Re: APCC meridian limits



OK. Thanks for your time Ray. I'll contact AP to iron things out.
Regards,
Paul


Re: [ap-ug] Re: New file uploaded to ap-gto

Karen Christen
 

Hello everyone,

 

This image is now on Facebook, as well, for those of you who follow us: https://www.facebook.com/AstroPhysicsCorp/photos/a.773726079467391/1051028001737196/?type=3&theater

 

Karen

 

From: ap-ug@... [mailto:ap-ug@...]
Sent: Saturday, August 25, 2018 6:08 PM
To: ap-ug@...
Subject: Re: [ap-ug] Re: [ap-gto] New file uploaded to ap-gto

 

 

Thanks,

I will post it on the ap-ug also, as well as facebook on Monday.

 

Rolando

 

 

 

-----Original Message-----
From: kurt_friedrich@... [ap-ug] <ap-ug@...>
To: ap-ug <ap-ug@...>
Sent: Sat, Aug 25, 2018 5:59 pm
Subject: [ap-ug] Re: [ap-gto] New file uploaded to ap-gto



Minor point, if you are not a member of the ap-gto group, you cannot access the image.  There are at least 500 of us in ap-ug that are not in the gto group. I am not complaining, just pointing it out in case you were not aware.

 

Kurt F

 


Re: APCC meridian limits

Paul
 

OK. Thanks for your time Ray. I'll contact AP to iron things out.
Regards,
Paul


Re: APCC meridian limits

Ray Gralak
 

Paul,

Again, I think I answered your original question on how to force a meridian flip to the East with the counterweight up to a planned target. If you have your East limits set correctly I hope you see it would be impossible to achieve Konstantin's case of a target a star closer to the East horizon *and* slew to that target with counterweight up, because that would cause a pier collision! :-)

So, I leave you with the reason why the limits were designed the way they were. Just mirror the East limits to the West and enable the allow counterweight up within East and West Limits. This allows the maximum time without a pier flip, but doesn't guarantee that one won't happen. The west tracking limits are then left in place as a safety feature in case no flip is ever initiated.

We can take it offline if you want to do it via email,
Paul, my time is limited during the week so can I suggest that you try calling George or Howard at A-P while in front of your mount? If needed, they can skype into your system and make settings changes that best utilize meridian limits for your needs.

Best regards,

-Ray Gralak
Author of APCC (Astro-Physics Command Center): http://www.astro-physics.com/index.htm?products/accessories/software/apcc/apcc
Author of PEMPro V3: https://www.ccdware.com
Author of Astro-Physics V2 ASCOM Driver: https://www.siriusimaging.com/apdriver


-----Original Message-----
From: ap-gto@... [mailto:ap-gto@...]
Sent: Monday, August 27, 2018 2:44 AM
To: ap-gto@...
Subject: [ap-gto] Re: APCC meridian limits



I think Konstantin's question is what I just found the answer to. I set the West limit to be negative, and the result
of that is that it hits the limit when tracking that much before the limit it reached. This is not what I was after. (Also
it didn't enable counterweight up slews either).

What I want is a positive West limit, so that it can track past the meridian when coming from the east. So I've
changed the West limits back to positive values.

I was hoping then that setting the East limit would allow it to slew to an object in east of the meridian if it's already
close enough to the meridian.

But playing with East or West limits and positive or negative values, I've still to get it to do such a slew.

I know others have this working, so I'm missing something. We can take it offline if you want to do it via email,
Ray. Might be easier to send scre enshots??

I'm presuming my southern hemisphere location has nothing to do with it? (Or my issue with a half hour time
zone - currently worked around with a few redundant parks and unparks - which I think Howard has been in
touch with you about).

Paul


Re: APCC meridian limits

Ray Gralak
 

Hi Konstantin,

no my question is another. The first target is in the east, outside East/West meridian limits and the telescope is CW
down. Now it starts imaging. How long it could do that, if the settings of the meridian limits are as you mentioned
both on the east side?
I think that's well-documented. It would be the West limit, which is East of the meridian. Thus, to make this work you would want to make sure that:

1) You start imaging when the initial slew to the target would trigger a counterweight up slew (i.e. the target is west of the East/West meridian limits).

2) Select "Just Warn" as the limit action so tracking will not stop. And, if you are sure that a slew will occur later (e.g. to a star to focus, or another target), that could trigger a pier flip.

-Ray Gralak
Author of APCC (Astro-Physics Command Center): http://www.astro-physics.com/index.htm?products/accessories/software/apcc/apcc
Author of PEMPro V3: https://www.ccdware.com
Author of Astro-Physics V2 ASCOM Driver: https://www.siriusimaging.com/apdriver


-----Original Message-----
From: ap-gto@... [mailto:ap-gto@...]
Sent: Monday, August 27, 2018 1:17 AM
To: ap-gto@...
Subject: Re: [ap-gto] APCC meridian limits



Hi Ray,

no my question is another. The first target is in the east, outside East/West meridian limits and the telescope is CW
down. Now it starts imaging. How long it could do that, if the settings of the meridian limits are as you mentioned
both on the east side?

Konstantin


Konstantin v. Poschinger

Hammerichstr. 5
22605 Hamburg
040/8805747
0171 1983476


Am 27.08.2018 um 00:15 schrieb 'Ray Gralak (Groups)' groups3@... [ap-gto] <ap-
gto@...>:


> there is one thing I don’t understand. If you set the limits as you mentioned and start imaging a object in
the east,
> outside the region of the limits with counter wight down, the normal east imaging position. Can you now
take
> images over the meridian limits and over the the meridian without a flip?

If I understand the question correctly, yes. If the first target is within the East/West negative meridian limits
as I showed in my example screen shot, the mount will slew to the East to a counterweight up position and
continue tracking through the meridian to the west and will stop at the horizon limit. All slews will not do a pier flip
unless the slew is to a more negative hour angle than the East/West limits.

-Ray Gralak
Author of APCC (Astro-Physics Command Center): http://www.astro-
physics.com/index.htm?products/accessories/software/apcc/apcc
Author of PEMPro V3: https://www.ccdware.com <https://www.ccdware.com/>
Author of Astro-Physics V2 ASCOM Driver: https://www.siriusimaging.com/apdriver

> -----Original Message-----
> From: ap-gto@... [mailto:ap-gto@...]
> Sent: Sunday, August 26, 2018 9:03 AM
> To: ap-gto@...
> Subject: Re: [ap-gto] APCC meridian limits
>
>
>
> Hi Ray,
>
> there is one thing I don’t understand. If you set the limits as you mentioned and start imaging a object in
the east,
> outside the region of the limits with counter wight down, the normal east imaging position. Can you now
take
> images over the meridian limits and over the the meridian without a flip?
> What I want do do and know wich settings will do that is, how image in the east up to position west of the
meridian
> and how to slew the telescope to a position counter wight up star in the east and to image as long as the
horizon is
> reached. Therefor I thought I had to set the east and west meridian limits. A problem I have only
sometimes if I had
> imaged east and want to slew to a point also in the east but counter wight up. Then I could not reach that
position
> only if I first point the telescope to a point west of the meridian with counter wight down. From there I can
reach the
> eastern star with counter wight up without a flip.
> What I want is the full meridian usage but when slewing the western positions should be preferred.
>
>
> Konstantin
>
>
> Konstantin v. Poschinger
>
> Hammerichstr. 5
> 22605 Hamburg
> 040/8805747
> 0171 1983476
>
>
> Am 26.08.2018 um 16:26 schrieb 'Ray Gralak (Groups)' groups3@... [ap-gto] <ap-
> gto@...>:
>
>
> Hi Paul,
>
> Sorry, there was one typo. The point I was making about mount pier side being the opposite of the usual
> telescope pointing side was that in step 1 of the Meridian Tracking Limits explorer window, the selected
side is
> mount pier side, not telescope side, so you must select "EAST", not "WEST".
>
> > 2. After measuring the east, I just used the reflect button for the west limits as the pier
> > and setup are essentially symmetric.
> > What should I do at that step (to avoid having to measure all the west points)?
>
> First, select "EAST" in the Step 1 group box in the Meridian Tracking Limits explorer window. Then
carefully
> trace over your East limits in the graph by holding the left mouse button down over the graph. Then East
and West
> limits should overlap and look identical on the graph. You do not need to measure all the West points
because
> physically the mount will actually flip to the East side so the West limits are *exactly* the same as the
East! :-)
>
> -Ray Gralak
> Author of APCC (Astro-Physics Command Center): http://www.astro- <http://www..astro-/>
> physics.com/index.htm?products/accessories/software/apcc/apcc <http://www..astro- <http://www..astro-
/>
> physics.com/index.htm?products/accessories/software/apcc/apcc>
> Author of PEMPro V3: https://www.ccdware.com <https://www.ccdware.com/>
<https://www.ccdware..com/>
> Author of Astro-Physics V2 ASCOM Driver: https://www.siriusimaging.com/apdriver
>
> > -----Original Message-----
> > From: ap-gto@... [mailto:ap-gto@...]
> > Sent: Saturday, August 25, 2018 8:11 PM
> > To: ap-gto@...
> > Subject: [ap-gto] Re: APCC meridian limits
> >
> >
> >
> > Thanks for the reply Ray.
> >
> > A couple of questions:
> > 1. The shape looks very different to mine. I plotted the points on the east side using the edit facility. It
> should be
> > more constrained (less space) near the vertical, but yours imply mine is backwards somehow! Hmm.
Any
> thoughts?
> > 2. After measuring the east, I just used the reflect button for the west limits as the pier and setup are
> essentially
> > symmetric. What should I do at that step (to avoid having to measure all the west points)?
> >
> > Thanks again.
> > Paul
> >
> >
>
>
>
>
>





Re: APCC meridian limits

Paul
 

I think Konstantin's question is what I just found the answer to. I set the West limit to be negative, and the result of that is that it hits the limit when tracking that much before the limit it reached. This is not what I was after. (Also it didn't enable counterweight up slews either).

What I want is a positive West limit, so that it can track past the meridian when coming from the east. So I've changed the West limits back to positive values.

I was hoping then that setting the East limit would allow it to slew to an object in east of the meridian if it's already close enough to the meridian.

But playing with East or West limits and positive or negative values, I've still to get it to do such a slew.

I know others have this working, so I'm missing something. We can take it offline if you want to do it via email, Ray. Might be easier to send screenshots??

I'm presuming my southern hemisphere location has nothing to do with it? (Or my issue with a half hour time zone - currently worked around with a few redundant parks and unparks -  which I think Howard has been in touch with you about).

Paul


Re: APCC meridian limits

Konstantin von Poschinger
 

Hi Ray,

no my question is another. The first target is in the east, outside East/West meridian limits and the telescope is CW down. Now it starts imaging. How long it could do that, if the settings of the meridian limits are as you mentioned both on the east side?

Konstantin


Konstantin v. Poschinger

Hammerichstr. 5
22605 Hamburg
040/8805747
0171 1983476

Am 27.08.2018 um 00:15 schrieb 'Ray Gralak (Groups)' groups3@... [ap-gto] <ap-gto@...>:

> there is one thing I don’t understand. If you set the limits as you mentioned and start imaging a object in the east,
> outside the region of the limits with counter wight down, the normal east imaging position. Can you now take
> images over the meridian limits and over the the meridian without a flip?

If I understand the question correctly, yes. If the first target is within the East/West negative meridian limits as I showed in my example screen shot, the mount will slew to the East to a counterweight up position and continue tracking through the meridian to the west and will stop at the horizon limit. All slews will not do a pier flip unless the slew is to a more negative hour angle than the East/West limits.

-Ray Gralak
Author of APCC (Astro-Physics Command Center): http://www.astro-physics.com/index.htm?products/accessories/software/apcc/apcc 
Author of PEMPro V3:  https://www.ccdware.com
Author of Astro-Physics V2 ASCOM Driver: https://www.siriusimaging.com/apdriver

> -----Original Message-----
> From: ap-gto@... [mailto:ap-gto@...]
> Sent: Sunday, August 26, 2018 9:03 AM
> To: ap-gto@...
> Subject: Re: [ap-gto] APCC meridian limits
> 
> 
> 
> Hi Ray,
> 
> there is one thing I don’t understand. If you set the limits as you mentioned and start imaging a object in the east,
> outside the region of the limits with counter wight down, the normal east imaging position. Can you now take
> images over the meridian limits and over the the meridian without a flip?
> What I want do do and know wich settings will do that is, how image in the east up to position west of the meridian
> and how to slew the telescope to a position counter wight up star in the east and to image as long as the horizon is
> reached. Therefor I thought I had to set the east and west meridian limits. A problem I have only sometimes if I had
> imaged east and want to slew to a point also in the east but counter wight up. Then I could not reach that position
> only if I first point the telescope to a point west of the meridian with counter wight down. From there I can reach the
> eastern star with counter wight up without a flip.
> What I want is the full meridian usage but when slewing the western positions should be preferred.
> 
> 
> Konstantin
> 
> 
> Konstantin v. Poschinger
> 
> Hammerichstr. 5
> 22605 Hamburg
> 040/8805747
> 0171 1983476
> 
> 
> Am 26.08.2018 um 16:26 schrieb 'Ray Gralak (Groups)' groups3@... [ap-gto] > gto@...>:
> 
> 
> Hi Paul,
> 
> Sorry, there was one typo. The point I was making about mount pier side being the opposite of the usual
> telescope pointing side was that in step 1 of the Meridian Tracking Limits explorer window, the selected side is
> mount pier side, not telescope side, so you must select "EAST", not "WEST".
> 
> > 2. After measuring the east, I just used the reflect button for the west limits as the pier
> > and setup are essentially symmetric.
> > What should I do at that step (to avoid having to measure all the west points)?
> 
> First, select "EAST" in the Step 1 group box in the Meridian Tracking Limits explorer window. Then carefully
> trace over your East limits in the graph by holding the left mouse button down over the graph. Then East and West
> limits should overlap and look identical on the graph. You do not need to measure all the West points because
> physically the mount will actually flip to the East side so the West limits are *exactly* the same as the East! :-)
> 
> -Ray Gralak
> Author of APCC (Astro-Physics Command Center): http://www.astro-
> physics.com/index.htm?products/accessories/software/apcc/apcc <http://www..astro-
> physics.com/index.htm?products/accessories/software/apcc/apcc>
> Author of PEMPro V3:  https://www.ccdware.com <https://www.ccdware..com/>
> Author of Astro-Physics V2 ASCOM Driver: https://www.siriusimaging.com/apdriver
> 
> > -----Original Message-----
> > From: ap-gto@... [mailto:ap-gto@...]
> > Sent: Saturday, August 25, 2018 8:11 PM
> > To: ap-gto@...
> > Subject: [ap-gto] Re: APCC meridian limits
> >
> >
> >
> > Thanks for the reply Ray.
> >
> > A couple of questions:
> > 1. The shape looks very different to mine. I plotted the points on the east side using the edit facility. It
> should be
> > more constrained (less space) near the vertical, but yours imply mine is backwards somehow! Hmm. Any
> thoughts?
> > 2. After measuring the east, I just used the reflect button for the west limits as the pier and setup are
> essentially
> > symmetric. What should I do at that step (to avoid having to measure all the west points)?
> >
> > Thanks again.
> > Paul
> >
> >
> 
> 
> 
> 
> 



Re: Daytime Alignment without Park1?

Geert
 

I understand why park one might be less desirable (for fixed setups), I continue to use it as it is the best way to park the telescope in my observatory.  As long as one is aware of the possible implications using park one, there is no problem (for me) to use it.  I think that using park one, after a setup, for daylight alignment poses no problem, one can park the telescope in one of the other positions afterward.

Best regards,

Geert Vdbulcke

Op ma 27 aug. 2018 05:48 schreef wayneh9026@... [ap-gto] <ap-gto@...>:

 

I see Park1 is no longer recommended, but I haven’t seen a revised daytime alignment process without it. I’m assuming Park4 will work, but not sure.

Thanks,
Wayne


Re: APCC meridian limits

Ray Gralak
 

Hi Paul,

You wrote:

LOL. You explained it fine. But there was a second question there about the
other situation of wanting to track
past the meridian before flipping, and what that meant the sign of
the other limit should be.
The question seemed ambiguous because initial pier side/counterweight position was not given. I answered it as if you wanted to track from counterweight up, scope pointing to East ending up pointing west after the meridian with counterweight down. And the answer was that both East and West limits are negative and tracking won't stop until it hits a horizon limit if one has been set up. That's because the mount goes from a counterweight up to counterweight down position as it passes the meridian, so there is no danger of a pier collision until the scope tracks below the horizon.

The other possibility is the more common one explained in the help file, where West is a reflection of East and the signs are opposite.

So I again urge you to try setting the limits as I have described and how the help file describes the limits, so that you can see how it all works. Plus, not many people in the Southern hemisphere have tried this so it would be nice to confirm that it works as designed down under. And if not, we will need to fix it!

Best regards,

-Ray Gralak
Author of APCC (Astro-Physics Command Center): http://www.astro-physics.com/index.htm?products/accessories/software/apcc/apcc
Author of PEMPro V3: https://www.ccdware.com
Author of Astro-Physics V2 ASCOM Driver: https://www.siriusimaging.com/apdriver


-----Original Message-----
From: ap-gto@... [mailto:ap-gto@...]
Sent: Sunday, August 26, 2018 3:41 PM
To: ap-gto@...
Subject: [ap-gto] Re: APCC meridian limits



I don't know how to explain this any better

LOL. You explained it fine. But there was a second question there about the other situation of wanting to track
past the meridian before flipping, and what that meant the sign of the other limit should be.






Re: APCC meridian limits

Paul
 

Ray,

Can I try to summarise my understanding (there is some! :-) ) and perhaps clarify what I don't know (that's a lot!) ...


There are two things I want to do:

1. Prematurely slew the scope to the east side of the mount when starting imaging and it's near enough the meridian

2. When tracking a target from the east (with the scope on the west side of the mount), track beyond the meridian.


For #1, measurements of the leeway on the east side of the pier would be needed. For #2, the west of course.


[I've got measurements from the east side, and in my case, I suspect they're pretty much the same as the west, but for the sake of argument let's assume not.]


You're telling me that for #1, what I want is  that the West limits should be non-zero and negative. (West limit - even though this is recording the clearances measured on the east side of the pier).


For #2, am I presuming it uses the East limit and this would be record the clearances measured on the west side of the mount. This should be non-zero and negative?


Thanks in advance for corrections to the above.


My understanding will converge eventually! :-) Thanks for your patience.


Paul


Re: APCC meridian limits

Yves Laroche
 

Steve,

Did you give it a try?

Yves

Le 2018-08-26 9:26 AM, "'Steve Wiencek' swiencek@... [ap-gto]" <ap-gto@...> a écrit :
 

Thank you Yves.

 

Steve

 

From: ap-gto@... [mailto:ap-gto@...]
Sent: Saturday, August 25, 2018 3:43 PM
To: ap-gto@...
Subject: Re : RE: [ap-gto] APCC meridian limits

 

 

Hi Steve,

 

 

Download DB Browser for SQLite...it's free !!!

 

Edit your C:\ProgramData\Astro-Physics\Settings.apdb files with DB Browser for SQLite.  In Show Data tab --> Table: Driver find the disablepark1warning property and change its value to "True".  The pop up will disappear.

 

 

Best regards,

Yves

 

 


Le 25/08/18 14:44, "'Ray Gralak (Groups)' groups3@... [ap-gto]" <ap-gto@...> a écrit :

> If I could jump in here on another topic. I use Park 1 and although the warning box is checked, as to not have the
> warning reappear, it continues to pop up. Ideas?

Yes... don't use Park 1. :-)

Sorry, but the popup is there to annoy people enough not to use Park 1.

-Ray Gralak
Author of APCC (Astro-Physics Command Center): http://www.astro-physics.com/index.htm?products/accessories/software/apcc/apcc
Author of PEMPro V3: https://www.ccdware.com
Author of Astro-Physics V2 ASCOM Driver: https://www.siriusimaging.com/apdriver

> -----Original Message-----
> From: ap-gto@... [mailto:ap-gto@...]
> Sent: Saturday, August 25, 2018 9:35 AM
> To: ap-gto@...
> Subject: RE: [ap-gto] APCC meridian limits
>
>
>
> Hey Ray,
>
> If I could jump in here on another topic. I use Park 1 and although the warning box is checked, as to not have the
> warning reappear, it continues to pop up. Ideas?
>
>
>
> Steve
>
>
>
> From: ap-gto@... [mailto:ap-gto@...]
> Sent: Saturday, August 25, 2018 10:46 AM
> To: ap-gto@...
> Subject: RE: [ap-gto] APCC meridian limits
>
>
>
>
>
> Hi Paul,
>
> To ensure that APCC will start in a counterweight up position before the meridian you would need to draw or set
> both the East and West limits in the meridian limits graph to the left of the meridian. The East/West limits need to be
> set to be further East (left on the graph) than where you plan to start imaging. The first slew to the East will then be
> a counterweight-up slew.
>
> Best regards,
>
> -Ray Gralak
> Author of APCC (Astro-Physics Command Center): http://www.astro-
> physics.com/index.htm?products/accessories/software/apcc/apcc
> Author of PEMPro V3: https://www.ccdware.com
> Author of Astro-Physics V2 ASCOM Driver: https://www.siriusimaging.com/apdriver
>
> > -----Original Message-----
> > From: ap-gto@... [mailto:ap-gto@...]
> > Sent: Friday, August 24, 2018 6:47 PM
> > To: ap-gto@...
> > Subject: [ap-gto] APCC meridian limits
> >
> >
> >
> > I’ve obviously misunderstood something based about how APCC should work. So my apologies for the dumb
> > question!
> >
> >
> >
> > I’ve set my meridian limits, and enabled the east check box (the one of the left), I thought to enable it to do a slew
> to
> > the weight up position before the meridian crossing.
> >
> >
> >
> > I started from Park 3, and slewed to the object. It still went to it with the scope on the west side of the mount,
> literally
> > 60 seconds before the meridian was to be crossed.
> >
> >
> >
> > What do I need to do to get it to slew to the east side before the meridian flip is due?
> >
> >
> >
> > Thanks in advance.
> >
> >
> >
> > Paul
> >
> >
> >
> >
> >
> >
> >
> >
>
>



Re: APCC meridian limits

Paul
 

> I don't know how to explain this any better

LOL. You explained it fine. But there was a second question there about the other situation of wanting to track past the meridian before flipping, and what that meant the sign of the other limit should be.



Re: APCC meridian limits

Ray Gralak
 

there is one thing I don’t understand. If you set the limits as you mentioned and start imaging a object in the east,
outside the region of the limits with counter wight down, the normal east imaging position. Can you now take
images over the meridian limits and over the the meridian without a flip?
If I understand the question correctly, yes. If the first target is within the East/West negative meridian limits as I showed in my example screen shot, the mount will slew to the East to a counterweight up position and continue tracking through the meridian to the west and will stop at the horizon limit. All slews will not do a pier flip unless the slew is to a more negative hour angle than the East/West limits.

-Ray Gralak
Author of APCC (Astro-Physics Command Center): http://www.astro-physics.com/index.htm?products/accessories/software/apcc/apcc
Author of PEMPro V3: https://www.ccdware.com
Author of Astro-Physics V2 ASCOM Driver: https://www.siriusimaging.com/apdriver


-----Original Message-----
From: ap-gto@... [mailto:ap-gto@...]
Sent: Sunday, August 26, 2018 9:03 AM
To: ap-gto@...
Subject: Re: [ap-gto] APCC meridian limits



Hi Ray,

there is one thing I don’t understand. If you set the limits as you mentioned and start imaging a object in the east,
outside the region of the limits with counter wight down, the normal east imaging position. Can you now take
images over the meridian limits and over the the meridian without a flip?
What I want do do and know wich settings will do that is, how image in the east up to position west of the meridian
and how to slew the telescope to a position counter wight up star in the east and to image as long as the horizon is
reached. Therefor I thought I had to set the east and west meridian limits. A problem I have only sometimes if I had
imaged east and want to slew to a point also in the east but counter wight up. Then I could not reach that position
only if I first point the telescope to a point west of the meridian with counter wight down. From there I can reach the
eastern star with counter wight up without a flip.
What I want is the full meridian usage but when slewing the western positions should be preferred.


Konstantin


Konstantin v. Poschinger

Hammerichstr. 5
22605 Hamburg
040/8805747
0171 1983476


Am 26.08.2018 um 16:26 schrieb 'Ray Gralak (Groups)' groups3@... [ap-gto] <ap-
gto@...>:


Hi Paul,

Sorry, there was one typo. The point I was making about mount pier side being the opposite of the usual
telescope pointing side was that in step 1 of the Meridian Tracking Limits explorer window, the selected side is
mount pier side, not telescope side, so you must select "EAST", not "WEST".

> 2. After measuring the east, I just used the reflect button for the west limits as the pier
> and setup are essentially symmetric.
> What should I do at that step (to avoid having to measure all the west points)?

First, select "EAST" in the Step 1 group box in the Meridian Tracking Limits explorer window. Then carefully
trace over your East limits in the graph by holding the left mouse button down over the graph. Then East and West
limits should overlap and look identical on the graph. You do not need to measure all the West points because
physically the mount will actually flip to the East side so the West limits are *exactly* the same as the East! :-)

-Ray Gralak
Author of APCC (Astro-Physics Command Center): http://www.astro-
physics.com/index.htm?products/accessories/software/apcc/apcc <http://www..astro-
physics.com/index.htm?products/accessories/software/apcc/apcc>
Author of PEMPro V3: https://www.ccdware.com <https://www.ccdware.com/>
Author of Astro-Physics V2 ASCOM Driver: https://www.siriusimaging.com/apdriver

> -----Original Message-----
> From: ap-gto@... [mailto:ap-gto@...]
> Sent: Saturday, August 25, 2018 8:11 PM
> To: ap-gto@...
> Subject: [ap-gto] Re: APCC meridian limits
>
>
>
> Thanks for the reply Ray.
>
> A couple of questions:
> 1. The shape looks very different to mine. I plotted the points on the east side using the edit facility. It
should be
> more constrained (less space) near the vertical, but yours imply mine is backwards somehow! Hmm. Any
thoughts?
> 2. After measuring the east, I just used the reflect button for the west limits as the pier and setup are
essentially
> symmetric. What should I do at that step (to avoid having to measure all the west points)?
>
> Thanks again.
> Paul
>
>





Re: APCC meridian limits

Ray Gralak
 

Paul,

don't mean just the shape but rather the sign of the west limits
I don't know how to explain this any better, but the sign of the west limits *forces* the counterweight up slew before the meridian, which is what I think you were asking for.

I suggest you try it in daylight with the mount in front of you so that you can see if the behavior is what you want.

-Ray Gralak
Author of APCC (Astro-Physics Command Center): http://www.astro-physics.com/index.htm?products/accessories/software/apcc/apcc
Author of PEMPro V3: https://www.ccdware.com
Author of Astro-Physics V2 ASCOM Driver: https://www.siriusimaging.com/apdriver


-----Original Message-----
From: ap-gto@... [mailto:ap-gto@...]
Sent: Sunday, August 26, 2018 2:32 PM
To: ap-gto@...
Subject: [ap-gto] Re: APCC meridian limits



As I said in a follow-up post, you must substitute *your* limits.

Yeah, of course. But what I meant was the nature of the shape looks differ ent. Like mine was an inverted outline of
my pier compared to yours.


Thanks for the advice. I'll try to make sense of it and give it a go. I wanted to have *both* the capability of the early
flip for objects nearing the meridian, but also the ability to track objects coming from the east well past the meridian.

For the former, you're saying the west limit in the table should be negative.

For the latter, I presume it's the east limit that's relevant. What sign should that be? (Probably a related question as
Konstantin's I guess).

Thanks again. And sorry for the repeated questions!!

P.S. Just to help understanding, why is your picture in
https:// groups.yahoo.com/neo/groups/ap-gto/photos/albums/459949353/lightbox/719255692#zax/719255692
<https://groups.yahoo.com/neo/groups/ap-gto/photos/albums/459949353/lightbox/719255692#zax/719255692>

different (fundamentally - I don't mean just the shape but rather the sign of the west limits) to that on page 136 of
this?
http://www.astro-physics.com/tech_support/apcc/apcc-st.pdf

<http://www.astro-physics.com/tech_support/apcc/apcc-st.pdf>