Date   

Re: 1) Starting with CW up; 2) Slewing to a target, landing CW up

Geof Lewis
 

Hi Richard,
I do this all the time with my 12 year old AP1200GTO CP3, by setting the meridian delay in the V2 driver - note I do not have APCC. A positive number moves the 'meridian' east (earlier) and a negative number moves the 'meridian' west, i.e. delays the flip, which I also use when imaging planets if they are past the meridian as that is a more comfortable configuration for viewing and imaging in my observatory.
For me typically a 2 hour delay doesn't risk any mount collisions, but YMMV so you need to check that out. For some targets I've moved the meridian delay forward 3, or even 4 hours. As the delay is set in the driver any targets that you slew to within the user set delay of the true meridian will not invoke a flip that you do not want.
Good luck,

Geof


On 20 Jan 2020, at 00:35, Richard Spencer via Groups.Io <rgspencer@...> wrote:

All,

AP 1100 mount:

It's often useful to start an imaging run with CW up to avoid an eventual meridian flip.  Currently, to do that, I slew to the target with the usual default of landing there with CW down, and then do a meridian flip, re-center, and start to image.  

1) But is there a way to tell the mount that I would like it to point to my target in the CW up position?  This would streamline things quite a bit.

2) Related: Once I'm near my object with CW up, I may want to slew to a nearby object to e.g. re-synch.  The mount again does this according to its default, landing there with CW down--which is not helpful.  So, a short slew of a couple degrees completely reverses the mount, and is also not what I want--I want to re-synch with CW up.  

2 1/2)  Essentially same at 2):  Likewise, I'd like to slew initially to a star near my target, landing there with CW up, synch, and then slew to the target, keeping CW up.  I can't figure out how to do that; the mount always wants to land CW down when slewing.

There are two ways the AP1100 can point to an object, and it seems that there should be a simple way to tell the mount that I want to choose the one with CW up.

Any help would be much appreciated!

Thank you,
Rick Spencer
Elkton, MD


Re: 1) Starting with CW up; 2) Slewing to a target, landing CW up

Ray Gralak
 

Ray, A-P folks, please clarify this if I am unclear. I do not know if starting CW up is possible without APCC.
Sure, you can set a meridian delay value in the driver. APCC allows you to configure a dynamic meridian delay value that changes with declination and pier side.

-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: main@ap-gto.groups.io [mailto:main@ap-gto.groups.io] On Behalf Of Worsel via Groups.Io
Sent: Sunday, January 19, 2020 7:22 PM
To: main@ap-gto.groups.io
Subject: Re: [ap-gto] 1) Starting with CW up; 2) Slewing to a target, landing CW up

Rick:

Do you have APCC...either Standard or Pro? You can change the meridian limits in either to move the point of flip
east or west as needed. Typically, we want to start CW up with the scope pointed east but avoid flip entirely. The
process is:

Start APCC. Connect your equipment.
Select Meridian tab
Set the meridian Delay to a POSITIVE value such that the Delay is farther EAST than the target object. You can
see the effect on the globe in the Telescope section of this tab.
Slew to your target
The scope should end up CW up and never execute a flip even when the object sets in the west.

Ray, A-P folks, please clarify this if I am unclear. I do not know if starting CW up is possible without APCC.

Bryan

Bryan


Re: 1) Starting with CW up; 2) Slewing to a target, landing CW up

Worsel
 

Rick:

Do you have APCC...either Standard or Pro?  You can change the meridian limits in either to move the point of flip east or west as needed.  Typically, we want to start CW up with the scope pointed east but avoid flip entirely.  The process is:

Start APCC. Connect your equipment.
Select Meridian tab
Set the meridian Delay to a POSITIVE value such that the Delay is farther EAST than the target object.  You can see the effect on the globe in the Telescope section of this tab.
Slew to your target
The scope should end up CW up and never execute a flip even when the object sets in the west.

Ray, A-P folks, please clarify this if I am unclear.  I do not know if starting CW up is possible without APCC.

Bryan

Bryan


Backlash correction during calibration

Suresh Mohan
 

Backlash correction seems to take a long time on my Mach 1 of late and for several steps ( star remains still ) , I don’t find any sloppiness in my mount when I physically try to wiggle it . Would you think the DEC axis is too tight ?
Regards
Suresh


1) Starting with CW up; 2) Slewing to a target, landing CW up

Richard Spencer
 

All,

AP 1100 mount:

It's often useful to start an imaging run with CW up to avoid an eventual meridian flip.  Currently, to do that, I slew to the target with the usual default of landing there with CW down, and then do a meridian flip, re-center, and start to image.  

1) But is there a way to tell the mount that I would like it to point to my target in the CW up position?  This would streamline things quite a bit.

2) Related: Once I'm near my object with CW up, I may want to slew to a nearby object to e.g. re-synch.  The mount again does this according to its default, landing there with CW down--which is not helpful.  So, a short slew of a couple degrees completely reverses the mount, and is also not what I want--I want to re-synch with CW up.  

2 1/2)  Essentially same at 2):  Likewise, I'd like to slew initially to a star near my target, landing there with CW up, synch, and then slew to the target, keeping CW up.  I can't figure out how to do that; the mount always wants to land CW down when slewing.

There are two ways the AP1100 can point to an object, and it seems that there should be a simple way to tell the mount that I want to choose the one with CW up.

Any help would be much appreciated!

Thank you,
Rick Spencer
Elkton, MD


Re: Mach2 Shipping?

Dean Jacobsen
 

Hopefully northern Illinois is in for a run of clear nights!


Actual view through the RAPAS

Henry Kwok
 

Can some kind soul please post an actual image of the view through the RAPAS?
How much more FOV is there beyond the outer ring for sig oct?
All the images of the reticle show the sig oct ring at the margin of the FOV
The data sheet says the RAPAS has 6 deg FOV - which means there should be quite a bit more (like 2 degree more) FOV beyond the sig oct ring?
I am just trying to figure out how much of the sig oct asterism is visible in the RAPAS for Southern Hemisphere alignment.
I don't think I will ever identify sig oct if I cannot see the whole asterism in the FOV.
If I can see the asterism then it may be possible.
Thanks!


Re: Mach2 Shipping?

 

Uh oh. See what you've done?!


On Thu, Jan 16, 2020, 3:06 PM uncarollo2 <chris1011@...> via Groups.Io <chris1011=aol.com@groups.io> wrote:
We may do that Smile

Rolando



-----Original Message-----
From: Bill Long <bill@...>
To: main@ap-gto.groups.io <main@ap-gto.groups.io>
Sent: Thu, Jan 16, 2020 4:57 pm
Subject: Re: [ap-gto] Mach2 Shipping?

Let me know if you need help testing. (kidding... 🙂)


From: main@ap-gto.groups.io <main@ap-gto.groups.io> on behalf of uncarollo2 <chris1011@...> via Groups.Io <chris1011=aol.com@groups.io>
Sent: Thursday, January 16, 2020 10:20 AM
To: main@ap-gto.groups.io <main@ap-gto.groups.io>
Subject: Re: [ap-gto] Mach2 Shipping?
 
First batch is in testing, we will update as soon as they are packed and ready for shipping. We see the light at the end of the rainbow.

Rolando



-----Original Message-----
From: Larry Phillips <llp41astro@...>
To: main <main@ap-gto.groups.io>
Sent: Thu, Jan 16, 2020 7:56 am
Subject: [ap-gto] Mach2 Shipping?

Dare I ask, have any Mach2s been shipped yet?

Larry


Re: Mach2 Shipping?

Wayne Hixson
 

I’m here for y’all! I am good at finding obscure ways of breaking things. 


On Jan 16, 2020, at 3:30 PM, Dominique Durand via Groups.Io <dom33.durand@...> wrote:


I would love to test too  ... in my home 😉 


Re: Mach2 Shipping?

Dominique Durand
 

I would love to test too  ... in my home 😉 


Re: Mach2 Shipping?

Bill Long
 

My services are free of charge. Just for you guys. 😉 


From: main@ap-gto.groups.io <main@ap-gto.groups.io> on behalf of uncarollo2 <chris1011@...> via Groups.Io <chris1011@...>
Sent: Thursday, January 16, 2020 3:06 PM
To: main@ap-gto.groups.io <main@ap-gto.groups.io>
Subject: Re: [ap-gto] Mach2 Shipping?
 
We may do that Smile

Rolando



-----Original Message-----
From: Bill Long <bill@...>
To: main@ap-gto.groups.io <main@ap-gto.groups.io>
Sent: Thu, Jan 16, 2020 4:57 pm
Subject: Re: [ap-gto] Mach2 Shipping?

Let me know if you need help testing. (kidding... 🙂)


From: main@ap-gto.groups.io <main@ap-gto.groups.io> on behalf of uncarollo2 <chris1011@...> via Groups.Io <chris1011@...>
Sent: Thursday, January 16, 2020 10:20 AM
To: main@ap-gto.groups.io <main@ap-gto.groups.io>
Subject: Re: [ap-gto] Mach2 Shipping?
 
First batch is in testing, we will update as soon as they are packed and ready for shipping. We see the light at the end of the rainbow.

Rolando



-----Original Message-----
From: Larry Phillips <llp41astro@...>
To: main <main@ap-gto.groups.io>
Sent: Thu, Jan 16, 2020 7:56 am
Subject: [ap-gto] Mach2 Shipping?

Dare I ask, have any Mach2s been shipped yet?

Larry


Re: Mach2 Shipping?

Roland Christen
 

We may do that Smile

Rolando



-----Original Message-----
From: Bill Long <bill@...>
To: main@ap-gto.groups.io <main@ap-gto.groups.io>
Sent: Thu, Jan 16, 2020 4:57 pm
Subject: Re: [ap-gto] Mach2 Shipping?

Let me know if you need help testing. (kidding... 🙂)


From: main@ap-gto.groups.io <main@ap-gto.groups.io> on behalf of uncarollo2 <chris1011@...> via Groups.Io <chris1011@...>
Sent: Thursday, January 16, 2020 10:20 AM
To: main@ap-gto.groups.io <main@ap-gto.groups.io>
Subject: Re: [ap-gto] Mach2 Shipping?
 
First batch is in testing, we will update as soon as they are packed and ready for shipping. We see the light at the end of the rainbow.

Rolando



-----Original Message-----
From: Larry Phillips <llp41astro@...>
To: main <main@ap-gto.groups.io>
Sent: Thu, Jan 16, 2020 7:56 am
Subject: [ap-gto] Mach2 Shipping?

Dare I ask, have any Mach2s been shipped yet?

Larry


Re: Mach2 Shipping?

Bill Long
 

Let me know if you need help testing. (kidding... 🙂)


From: main@ap-gto.groups.io <main@ap-gto.groups.io> on behalf of uncarollo2 <chris1011@...> via Groups.Io <chris1011@...>
Sent: Thursday, January 16, 2020 10:20 AM
To: main@ap-gto.groups.io <main@ap-gto.groups.io>
Subject: Re: [ap-gto] Mach2 Shipping?
 
First batch is in testing, we will update as soon as they are packed and ready for shipping. We see the light at the end of the rainbow.

Rolando



-----Original Message-----
From: Larry Phillips <llp41astro@...>
To: main <main@ap-gto.groups.io>
Sent: Thu, Jan 16, 2020 7:56 am
Subject: [ap-gto] Mach2 Shipping?

Dare I ask, have any Mach2s been shipped yet?

Larry


Re: Mach2 Shipping?

Roland Christen
 

First batch is in testing, we will update as soon as they are packed and ready for shipping. We see the light at the end of the rainbow.

Rolando



-----Original Message-----
From: Larry Phillips <llp41astro@...>
To: main <main@ap-gto.groups.io>
Sent: Thu, Jan 16, 2020 7:56 am
Subject: [ap-gto] Mach2 Shipping?

Dare I ask, have any Mach2s been shipped yet?

Larry


Re: Mach2 Shipping?

Dean Jacobsen
 

The web site was changed several weeks ago to say that shipments will begin this month.  However, I haven't seen any of the necessary software updates [keypad, APCC-Pro, ASCOM driver] publicly released yet.  The last status update - December 20th - was that the mounts were in "final assembly".  So, maybe soon.


Mach2 Shipping?

Larry Phillips
 

Dare I ask, have any Mach2s been shipped yet?

Larry


Re: Plate solving with SGP, AP900 Mount and APCC

John Kazanas
 

Well as an update to this - seems that with SGP it's best to assign the plate solved image to the Sequence. 

Then ask it to center that way by right clicking on the Sequence target or ask SGP to center via the Target settings.

Why simply not by right clicking on the image that has been solved is beyond me - but it does work as per above to pixel level accuracy which is what I am happy about!

Clear skies.

John Kazanas.


Re: Plate solving with SGP, AP900 Mount and APCC

John Kazanas
 

Hi Brian,

I tend to take a series of images slowly shifting the scope and rotating the camera. When I am happy with this, I take a short exposure, plate solve this, and ask SGP to centre there.

When I return at a later night, I simply open the last image I took, plate solve again ask SGP to centre. It all works fine but it's slight offset.

I am 100% it use to work fine - not sure what I changed, or whether one of the updates changed something which I need to change back in either APCC or SGP or both.

John Kazanas.


Re: Plate solving with SGP, AP900 Mount and APCC

 

John - How are you creating your target? If you are using SGP’s framing and mosaic wizard, I’ve noticed problems like this in the past few releases. I’ve seen when the image is brought up in F&MW it is oddly offset by about that amount.

 

Brian

 

From: main@ap-gto.groups.io [mailto:main@ap-gto.groups.io] On Behalf Of John Kazanas
Sent: Wednesday, January 15, 2020 10:15 PM
To: main@ap-gto.groups.io
Subject: Re: [ap-gto] Plate solving with SGP, AP900 Mount and APCC

 

Thanks Ray,

I have posted in SGP forumns but have not had a response.

I should better explain the issue - I normally take a reference image once I have framed the object correctly, plate solve (this works) and then ask SGP to centre here. But it's always off in RA/Dec by 10-15% of the frame height/width after it the scope is centred.

So the plate solving is fine - it's just that the scope does not then centre correctly. But again, from the net searching I have been doing, this may be related to the EPOCH settings or something else that I have done in correctly.

Clear skies,

John Kazanas.


Re: Plate solving with SGP, AP900 Mount and APCC

John Kazanas
 

Thanks Ray,

I have posted in SGP forumns but have not had a response.

I should better explain the issue - I normally take a reference image once I have framed the object correctly, plate solve (this works) and then ask SGP to centre here. But it's always off in RA/Dec by 10-15% of the frame height/width after it the scope is centred.

So the plate solving is fine - it's just that the scope does not then centre correctly. But again, from the net searching I have been doing, this may be related to the EPOCH settings or something else that I have done in correctly.

Clear skies,

John Kazanas.

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