Date   

Re: RAPAS on Mach2

Woody Schlom
 

Bill,

 

Yeah, I was with you not understanding how it could be possible to hit the RAPAS with the CW’s until somebody mentioned that the RAPAS doesn’t mount on the Mach2 the same way it mounts on the Mach1. 

 

Now that I think about it, I do think I once saw a photo of how the RAPAS mounts on the Mach2 and I thought it looked very odd.  Since I don’t anticipate ever being able to update to a Mach2, I didn’t pay it much attention at the time.

 

Woody

 

From: main@ap-gto.groups.io <main@ap-gto.groups.io> On Behalf Of Bill Long
Sent: Tuesday, April 21, 2020 10:35 AM
To: main@ap-gto.groups.io
Subject: Re: [ap-gto] RAPAS on Mach2

 

I really need to see a picture of this.... 

 


From: main@ap-gto.groups.io <main@ap-gto.groups.io> on behalf of Terri Zittritsch <theresamarie11@...>
Sent: Tuesday, April 21, 2020 10:30 AM
To: main@ap-gto.groups.io <main@ap-gto.groups.io>
Subject: Re: [ap-gto] RAPAS on Mach2

 

On Tue, Apr 21, 2020 at 01:01 PM, W Hilmo wrote:

“My head does not allow me to get my dominant eye (right eye) into the RAPAS with a telescope installed.”

 

I put my mount into Park 4 when using the RAPAS to polar align.  That gets the scope and cabling well out of the way.

 

Hi Wade, that would likely result in a collision.   You must be talking about a different mount than the Mach2.    I don't see how any park position, other than Park 3, that can be used.. and Park 3 doesn't allow my head to get in there.   Granted, I'm not 'dainty', but I also don't have a head like Andre the Giant either.    I rotate RA every so slightly west from Park 3 to do polar alignment.

T


Terri


Re: RAPAS on Mach2

Bill Long
 

Where does it mount? I looked on the site and did not see a photo of this.


From: main@ap-gto.groups.io <main@ap-gto.groups.io> on behalf of W Hilmo <y.groups@...>
Sent: Tuesday, April 21, 2020 10:51 AM
To: main@ap-gto.groups.io <main@ap-gto.groups.io>
Subject: Re: [ap-gto] RAPAS on Mach2
 

Ah, yes.

 

I forgot that the Mach2 has a different mounting for the RAPAS…

 

From: main@ap-gto.groups.io <main@ap-gto.groups.io> On Behalf Of Terri Zittritsch
Sent: Tuesday, April 21, 2020 10:31 AM
To: main@ap-gto.groups.io
Subject: Re: [ap-gto] RAPAS on Mach2

 

On Tue, Apr 21, 2020 at 01:01 PM, W Hilmo wrote:

“My head does not allow me to get my dominant eye (right eye) into the RAPAS with a telescope installed.”

 

I put my mount into Park 4 when using the RAPAS to polar align.  That gets the scope and cabling well out of the way.

 

Hi Wade, that would likely result in a collision.   You must be talking about a different mount than the Mach2.    I don't see how any park position, other than Park 3, that can be used.. and Park 3 doesn't allow my head to get in there.   Granted, I'm not 'dainty', but I also don't have a head like Andre the Giant either.    I rotate RA every so slightly west from Park 3 to do polar alignment.

T


Terri


Re: RAPAS on Mach2

W Hilmo
 

Ah, yes.

 

I forgot that the Mach2 has a different mounting for the RAPAS…

 

From: main@ap-gto.groups.io <main@ap-gto.groups.io> On Behalf Of Terri Zittritsch
Sent: Tuesday, April 21, 2020 10:31 AM
To: main@ap-gto.groups.io
Subject: Re: [ap-gto] RAPAS on Mach2

 

On Tue, Apr 21, 2020 at 01:01 PM, W Hilmo wrote:

“My head does not allow me to get my dominant eye (right eye) into the RAPAS with a telescope installed.”

 

I put my mount into Park 4 when using the RAPAS to polar align.  That gets the scope and cabling well out of the way.

 

Hi Wade, that would likely result in a collision.   You must be talking about a different mount than the Mach2.    I don't see how any park position, other than Park 3, that can be used.. and Park 3 doesn't allow my head to get in there.   Granted, I'm not 'dainty', but I also don't have a head like Andre the Giant either.    I rotate RA every so slightly west from Park 3 to do polar alignment.

T


Terri


Re: RAPAS on Mach2

Bill Long
 

I really need to see a picture of this.... 


From: main@ap-gto.groups.io <main@ap-gto.groups.io> on behalf of Terri Zittritsch <theresamarie11@...>
Sent: Tuesday, April 21, 2020 10:30 AM
To: main@ap-gto.groups.io <main@ap-gto.groups.io>
Subject: Re: [ap-gto] RAPAS on Mach2
 
On Tue, Apr 21, 2020 at 01:01 PM, W Hilmo wrote:

“My head does not allow me to get my dominant eye (right eye) into the RAPAS with a telescope installed.”

 

I put my mount into Park 4 when using the RAPAS to polar align.  That gets the scope and cabling well out of the way.

 

Hi Wade, that would likely result in a collision.   You must be talking about a different mount than the Mach2.    I don't see how any park position, other than Park 3, that can be used.. and Park 3 doesn't allow my head to get in there.   Granted, I'm not 'dainty', but I also don't have a head like Andre the Giant either.    I rotate RA every so slightly west from Park 3 to do polar alignment.

T


Terri


Re: RAPAS on Mach2

Terri Zittritsch
 

On Tue, Apr 21, 2020 at 01:01 PM, W Hilmo wrote:

“My head does not allow me to get my dominant eye (right eye) into the RAPAS with a telescope installed.”

 

I put my mount into Park 4 when using the RAPAS to polar align.  That gets the scope and cabling well out of the way.

 

Hi Wade, that would likely result in a collision.   You must be talking about a different mount than the Mach2.    I don't see how any park position, other than Park 3, that can be used.. and Park 3 doesn't allow my head to get in there.   Granted, I'm not 'dainty', but I also don't have a head like Andre the Giant either.    I rotate RA every so slightly west from Park 3 to do polar alignment.

T


Terri


Re: RAPAS on Mach2

Bill Long
 

On both my mounts, 1100 and Mach 1 the RAPAS is installed at the rear of the RA axis where the tip/tilt plate for calibrating it is located. I am confused as to how on earth a counterweight could ever come anywhere near contacting it. Perhaps a picture of your setup would help?

Park 2, Park 4, and/or Park 5 will all work to keep the OTA out of your face while using RAPAS for alignment.


From: main@ap-gto.groups.io <main@ap-gto.groups.io> on behalf of Terri Zittritsch <theresamarie11@...>
Sent: Tuesday, April 21, 2020 10:17 AM
To: main@ap-gto.groups.io <main@ap-gto.groups.io>
Subject: Re: [ap-gto] RAPAS on Mach2
 
On Tue, Apr 21, 2020 at 12:43 PM, Bill Long wrote:
Perhaps it is a lack of coffee taking effect this morning, but how on earth did the weights hit the RAPAS? Also, you can put the scope in Park 2 to quickly and easily move it out of the way of the RAPAS.
Have another cup.   The Mach2 is a smaller mount than you likely have, and/or, you have your RAPAS installed in the RA rotational axis recess.    So being a smaller mount, with no ability to install in the RA axis center, it's on a stalk that sticks out to the right off of the back of the RA housing,  and the optical tube is forward enough (small mount) to run into the weights.   It can hit the weights (I know this for absolute certainty).   I might have designed a bracket that moves it back far enough so as not to interfere with the mounts operation, but I probably shouldn't second guess such things.. I'm not designing mounts for a living.

With a way to do fast, accurate, polar alignment, I'm seeing pretty good performance.   If it wasn't obvious, I really disliked doing tedious polar alignment.   With Polemaster and/or RAPAS, it's going to be fast and not eat into precious dark sky time.

T


Re: RAPAS on Mach2

Michael Hambrick <mike.hambrick@...>
 

What about from Park 2 ?

When I first got my 1100 mount I was setting the polar alignment while the mount was in Park 3. I had to set the alignment and remove the RAPAS before I could attach the scope and camera, then Roland suggested to put the mount in Park 2. Problem solved.


Best Regards

Michael Hambrick
ARLANXEO
TSR Global Manufacturing Support
PO Box 2000
Orange, TX 77631-2000
Phone: +1 (409) 882-2799
email: mike.hambrick@...


Re: RAPAS on Mach2

Terri Zittritsch
 

On Tue, Apr 21, 2020 at 12:43 PM, Bill Long wrote:
Perhaps it is a lack of coffee taking effect this morning, but how on earth did the weights hit the RAPAS? Also, you can put the scope in Park 2 to quickly and easily move it out of the way of the RAPAS.
Have another cup.   The Mach2 is a smaller mount than you likely have, and/or, you have your RAPAS installed in the RA rotational axis recess.    So being a smaller mount, with no ability to install in the RA axis center, it's on a stalk that sticks out to the right off of the back of the RA housing,  and the optical tube is forward enough (small mount) to run into the weights.   It can hit the weights (I know this for absolute certainty).   I might have designed a bracket that moves it back far enough so as not to interfere with the mounts operation, but I probably shouldn't second guess such things.. I'm not designing mounts for a living.

With a way to do fast, accurate, polar alignment, I'm seeing pretty good performance.   If it wasn't obvious, I really disliked doing tedious polar alignment.   With Polemaster and/or RAPAS, it's going to be fast and not eat into precious dark sky time.

T


Re: CP4 Sharing?

Roland Christen
 

No, not that easy. You would have to re-do it with PEMPro if you run it with another mount in between.

Roland



-----Original Message-----
From: Bill Long <bill@...>
To: main@ap-gto.groups.io <main@ap-gto.groups.io>
Sent: Tue, Apr 21, 2020 11:52 am
Subject: Re: [ap-gto] CP4 Sharing?

I could just re-upload the curve after a swap, right?


From: main@ap-gto.groups.io <main@ap-gto.groups.io> on behalf of George <george@...>
Sent: Tuesday, April 21, 2020 9:52 AM
To: main@ap-gto.groups.io <main@ap-gto.groups.io>
Subject: Re: [ap-gto] CP4 Sharing?
 
Bill,
 
No, control boxes cannot be swapped without losing the PE curve.
 
Regards,
 
George
 
George Whitney
Astro-Physics, Inc.
Phone:  815-282-1513
Email:  george@...
 
From: main@ap-gto.groups.io [mailto:main@ap-gto.groups.io] On Behalf Of Bill Long
Sent: Tuesday, April 21, 2020 11:39 AM
To: main@ap-gto.groups.io
Subject: [ap-gto] CP4 Sharing?
 
Quick question -- I have an 1100 with AE and a CP4 and a Mach 1 with CP3-V2 Chip. If I wanted to, would I be able to share the CP4 between the two mounts? Assuming that any curve stored in the CP4 would be for use with the Mach 1, and the 1100 would of course just use the encoders.
 
-Bill


Re: CP4 Sharing?

Bill Long
 

A-P is always lightning quick. You guys are the best.

Now, if you have a demo, scratch and dent, or otherwise used CP4 sitting around somewhere at AP -- I would love to know. 😉 


From: main@ap-gto.groups.io <main@ap-gto.groups.io> on behalf of George <george@...>
Sent: Tuesday, April 21, 2020 9:59 AM
To: main@ap-gto.groups.io <main@ap-gto.groups.io>
Subject: Re: [ap-gto] CP4 Sharing?
 

Pretty fast for an old guy!!!   <G>

 

Regards,

 

George

 

George Whitney

Astro-Physics, Inc.

Phone:  815-282-1513

Email:  george@...

 

From: main@ap-gto.groups.io [mailto:main@ap-gto.groups.io] On Behalf Of Bill Long
Sent: Tuesday, April 21, 2020 11:56 AM
To: main@ap-gto.groups.io
Subject: Re: [ap-gto] CP4 Sharing?

 

Ahh okay. Thanks for the quick response!

 


From: main@ap-gto.groups.io <main@ap-gto.groups.io> on behalf of George <george@...>
Sent: Tuesday, April 21, 2020 9:56 AM
To: main@ap-gto.groups.io <main@ap-gto.groups.io>
Subject: Re: [ap-gto] CP4 Sharing?

 

No, the gear angles have changed.

 

Regards,

 

George

 

George Whitney

Astro-Physics, Inc.

Phone:  815-282-1513

Email:  george@...

 

From: main@ap-gto.groups.io [mailto:main@ap-gto.groups.io] On Behalf Of Bill Long
Sent: Tuesday, April 21, 2020 11:52 AM
To: main@ap-gto.groups.io
Subject: Re: [ap-gto] CP4 Sharing?

 

I could just re-upload the curve after a swap, right?

 


From: main@ap-gto.groups.io <main@ap-gto.groups.io> on behalf of George <george@...>
Sent: Tuesday, April 21, 2020 9:52 AM
To: main@ap-gto.groups.io <main@ap-gto.groups.io>
Subject: Re: [ap-gto] CP4 Sharing?

 

Bill,

 

No, control boxes cannot be swapped without losing the PE curve.

 

Regards,

 

George

 

George Whitney

Astro-Physics, Inc.

Phone:  815-282-1513

Email:  george@...

 

From: main@ap-gto.groups.io [mailto:main@ap-gto.groups.io] On Behalf Of Bill Long
Sent: Tuesday, April 21, 2020 11:39 AM
To: main@ap-gto.groups.io
Subject: [ap-gto] CP4 Sharing?

 

Quick question -- I have an 1100 with AE and a CP4 and a Mach 1 with CP3-V2 Chip. If I wanted to, would I be able to share the CP4 between the two mounts? Assuming that any curve stored in the CP4 would be for use with the Mach 1, and the 1100 would of course just use the encoders.

 

-Bill


Re: RAPAS on Mach2

W Hilmo
 

“My head does not allow me to get my dominant eye (right eye) into the RAPAS with a telescope installed.”

 

I put my mount into Park 4 when using the RAPAS to polar align.  That gets the scope and cabling well out of the way.

 

From: main@ap-gto.groups.io <main@ap-gto.groups.io> On Behalf Of Terri Zittritsch
Sent: Tuesday, April 21, 2020 9:35 AM
To: main@ap-gto.groups.io
Subject: Re: [ap-gto] RAPAS on Mach2

 

I thought I'd confirm, for those interested in using the Polemaster, that my exposure time increase did fix my accuracy issues in the fine tune step of polar alignment.
Last night, I measured a DEC drift of essentially zero again in PHD2 using only the Polemaster.      So if you're getting poor results, like I was, turn up the exposure time.   I was previously turning up both exposure and gain, last night after thinking about gain vs. exposure, I turned up just exposure and received the same good results.   So I have to retract my first post comments about accuracy, the Polemaster can do a very good job.

I also adjusted my RAPAS, to the best that I could do.. this is a tricky process, in the dark, with two small allan wrenches.    I tried some repeatability tests, plugging and unplugging the RAPAS.   There is some small amount of seating that I noticed.. that I need to wiggle (wrong word but don't have the right one) the RAPAS bracket, for the image location to stabilize.   It's more grabbing the bracket and flexing back and forth.. but it was repeatable and now that I know I must do it, it's ok.   Next time I will check how good the RAPAS polar aligns compared to Polemaster.

As a public service warning: 
Note, that while in the dark, be VERY CAREFUL about rotating a Mach2 with RAPAS attached.   My head does not allow me to get my dominant eye (right eye) into the RAPAS with a telescope installed.   So I have to rotate the scope to opposite side of RAPAS, for me it is west, and you have to be careful you don't go too far... because the mount/weights can and will hit the RAPAS and if the weights are up high, it doesn't have to go very far!    

I think APCC or the driver should have a message come up when you unpark Mach2 mounts, that warns you that you should remember to remove the RAPAS or pay careful attention to your rotation  and RAPAS so no collision occurs.  All of my prior mounts only had polar scopes on the RA axis of rotation, which never have to be removed, so I never gave it a thought.  


T


Re: CP4 Sharing?

George
 

Pretty fast for an old guy!!!   <G>

 

Regards,

 

George

 

George Whitney

Astro-Physics, Inc.

Phone:  815-282-1513

Email:  george@...

 

From: main@ap-gto.groups.io [mailto:main@ap-gto.groups.io] On Behalf Of Bill Long
Sent: Tuesday, April 21, 2020 11:56 AM
To: main@ap-gto.groups.io
Subject: Re: [ap-gto] CP4 Sharing?

 

Ahh okay. Thanks for the quick response!

 


From: main@ap-gto.groups.io <main@ap-gto.groups.io> on behalf of George <george@...>
Sent: Tuesday, April 21, 2020 9:56 AM
To: main@ap-gto.groups.io <main@ap-gto.groups.io>
Subject: Re: [ap-gto] CP4 Sharing?

 

No, the gear angles have changed.

 

Regards,

 

George

 

George Whitney

Astro-Physics, Inc.

Phone:  815-282-1513

Email:  george@...

 

From: main@ap-gto.groups.io [mailto:main@ap-gto.groups.io] On Behalf Of Bill Long
Sent: Tuesday, April 21, 2020 11:52 AM
To: main@ap-gto.groups.io
Subject: Re: [ap-gto] CP4 Sharing?

 

I could just re-upload the curve after a swap, right?

 


From: main@ap-gto.groups.io <main@ap-gto.groups.io> on behalf of George <george@...>
Sent: Tuesday, April 21, 2020 9:52 AM
To: main@ap-gto.groups.io <main@ap-gto.groups.io>
Subject: Re: [ap-gto] CP4 Sharing?

 

Bill,

 

No, control boxes cannot be swapped without losing the PE curve.

 

Regards,

 

George

 

George Whitney

Astro-Physics, Inc.

Phone:  815-282-1513

Email:  george@...

 

From: main@ap-gto.groups.io [mailto:main@ap-gto.groups.io] On Behalf Of Bill Long
Sent: Tuesday, April 21, 2020 11:39 AM
To: main@ap-gto.groups.io
Subject: [ap-gto] CP4 Sharing?

 

Quick question -- I have an 1100 with AE and a CP4 and a Mach 1 with CP3-V2 Chip. If I wanted to, would I be able to share the CP4 between the two mounts? Assuming that any curve stored in the CP4 would be for use with the Mach 1, and the 1100 would of course just use the encoders.

 

-Bill


Re: CP4 Sharing?

Bill Long
 

Ahh okay. Thanks for the quick response!


From: main@ap-gto.groups.io <main@ap-gto.groups.io> on behalf of George <george@...>
Sent: Tuesday, April 21, 2020 9:56 AM
To: main@ap-gto.groups.io <main@ap-gto.groups.io>
Subject: Re: [ap-gto] CP4 Sharing?
 

No, the gear angles have changed.

 

Regards,

 

George

 

George Whitney

Astro-Physics, Inc.

Phone:  815-282-1513

Email:  george@...

 

From: main@ap-gto.groups.io [mailto:main@ap-gto.groups.io] On Behalf Of Bill Long
Sent: Tuesday, April 21, 2020 11:52 AM
To: main@ap-gto.groups.io
Subject: Re: [ap-gto] CP4 Sharing?

 

I could just re-upload the curve after a swap, right?

 


From: main@ap-gto.groups.io <main@ap-gto.groups.io> on behalf of George <george@...>
Sent: Tuesday, April 21, 2020 9:52 AM
To: main@ap-gto.groups.io <main@ap-gto.groups.io>
Subject: Re: [ap-gto] CP4 Sharing?

 

Bill,

 

No, control boxes cannot be swapped without losing the PE curve.

 

Regards,

 

George

 

George Whitney

Astro-Physics, Inc.

Phone:  815-282-1513

Email:  george@...

 

From: main@ap-gto.groups.io [mailto:main@ap-gto.groups.io] On Behalf Of Bill Long
Sent: Tuesday, April 21, 2020 11:39 AM
To: main@ap-gto.groups.io
Subject: [ap-gto] CP4 Sharing?

 

Quick question -- I have an 1100 with AE and a CP4 and a Mach 1 with CP3-V2 Chip. If I wanted to, would I be able to share the CP4 between the two mounts? Assuming that any curve stored in the CP4 would be for use with the Mach 1, and the 1100 would of course just use the encoders.

 

-Bill


Re: CP4 Sharing?

George
 

No, the gear angles have changed.

 

Regards,

 

George

 

George Whitney

Astro-Physics, Inc.

Phone:  815-282-1513

Email:  george@...

 

From: main@ap-gto.groups.io [mailto:main@ap-gto.groups.io] On Behalf Of Bill Long
Sent: Tuesday, April 21, 2020 11:52 AM
To: main@ap-gto.groups.io
Subject: Re: [ap-gto] CP4 Sharing?

 

I could just re-upload the curve after a swap, right?

 


From: main@ap-gto.groups.io <main@ap-gto.groups.io> on behalf of George <george@...>
Sent: Tuesday, April 21, 2020 9:52 AM
To: main@ap-gto.groups.io <main@ap-gto.groups.io>
Subject: Re: [ap-gto] CP4 Sharing?

 

Bill,

 

No, control boxes cannot be swapped without losing the PE curve.

 

Regards,

 

George

 

George Whitney

Astro-Physics, Inc.

Phone:  815-282-1513

Email:  george@...

 

From: main@ap-gto.groups.io [mailto:main@ap-gto.groups.io] On Behalf Of Bill Long
Sent: Tuesday, April 21, 2020 11:39 AM
To: main@ap-gto.groups.io
Subject: [ap-gto] CP4 Sharing?

 

Quick question -- I have an 1100 with AE and a CP4 and a Mach 1 with CP3-V2 Chip. If I wanted to, would I be able to share the CP4 between the two mounts? Assuming that any curve stored in the CP4 would be for use with the Mach 1, and the 1100 would of course just use the encoders.

 

-Bill


Re: CP4 Sharing?

Bill Long
 

I could just re-upload the curve after a swap, right?


From: main@ap-gto.groups.io <main@ap-gto.groups.io> on behalf of George <george@...>
Sent: Tuesday, April 21, 2020 9:52 AM
To: main@ap-gto.groups.io <main@ap-gto.groups.io>
Subject: Re: [ap-gto] CP4 Sharing?
 

Bill,

 

No, control boxes cannot be swapped without losing the PE curve.

 

Regards,

 

George

 

George Whitney

Astro-Physics, Inc.

Phone:  815-282-1513

Email:  george@...

 

From: main@ap-gto.groups.io [mailto:main@ap-gto.groups.io] On Behalf Of Bill Long
Sent: Tuesday, April 21, 2020 11:39 AM
To: main@ap-gto.groups.io
Subject: [ap-gto] CP4 Sharing?

 

Quick question -- I have an 1100 with AE and a CP4 and a Mach 1 with CP3-V2 Chip. If I wanted to, would I be able to share the CP4 between the two mounts? Assuming that any curve stored in the CP4 would be for use with the Mach 1, and the 1100 would of course just use the encoders.

 

-Bill


Re: CP4 Sharing?

George
 

Bill,

 

No, control boxes cannot be swapped without losing the PE curve.

 

Regards,

 

George

 

George Whitney

Astro-Physics, Inc.

Phone:  815-282-1513

Email:  george@...

 

From: main@ap-gto.groups.io [mailto:main@ap-gto.groups.io] On Behalf Of Bill Long
Sent: Tuesday, April 21, 2020 11:39 AM
To: main@ap-gto.groups.io
Subject: [ap-gto] CP4 Sharing?

 

Quick question -- I have an 1100 with AE and a CP4 and a Mach 1 with CP3-V2 Chip. If I wanted to, would I be able to share the CP4 between the two mounts? Assuming that any curve stored in the CP4 would be for use with the Mach 1, and the 1100 would of course just use the encoders.

 

-Bill


Re: RAPAS on Mach2

Bill Long
 

I went through all of that with Polemaster, and never saw much of a difference. Maybe I had a bad unit or something. At any rate, RAPAS works great for me, and I use PEMPro to check/dial things in further.

Perhaps it is a lack of coffee taking effect this morning, but how on earth did the weights hit the RAPAS? Also, you can put the scope in Park 2 to quickly and easily move it out of the way of the RAPAS.


From: main@ap-gto.groups.io <main@ap-gto.groups.io> on behalf of Terri Zittritsch <theresamarie11@...>
Sent: Tuesday, April 21, 2020 9:34 AM
To: main@ap-gto.groups.io <main@ap-gto.groups.io>
Subject: Re: [ap-gto] RAPAS on Mach2
 
I thought I'd confirm, for those interested in using the Polemaster, that my exposure time increase did fix my accuracy issues in the fine tune step of polar alignment.
Last night, I measured a DEC drift of essentially zero again in PHD2 using only the Polemaster.      So if you're getting poor results, like I was, turn up the exposure time.   I was previously turning up both exposure and gain, last night after thinking about gain vs. exposure, I turned up just exposure and received the same good results.   So I have to retract my first post comments about accuracy, the Polemaster can do a very good job.

I also adjusted my RAPAS, to the best that I could do.. this is a tricky process, in the dark, with two small allan wrenches.    I tried some repeatability tests, plugging and unplugging the RAPAS.   There is some small amount of seating that I noticed.. that I need to wiggle (wrong word but don't have the right one) the RAPAS bracket, for the image location to stabilize.   It's more grabbing the bracket and flexing back and forth.. but it was repeatable and now that I know I must do it, it's ok.   Next time I will check how good the RAPAS polar aligns compared to Polemaster.

As a public service warning: 
Note, that while in the dark, be VERY CAREFUL about rotating a Mach2 with RAPAS attached.   My head does not allow me to get my dominant eye (right eye) into the RAPAS with a telescope installed.   So I have to rotate the scope to opposite side of RAPAS, for me it is west, and you have to be careful you don't go too far... because the mount/weights can and will hit the RAPAS and if the weights are up high, it doesn't have to go very far!    

I think APCC or the driver should have a message come up when you unpark Mach2 mounts, that warns you that you should remember to remove the RAPAS or pay careful attention to your rotation  and RAPAS so no collision occurs.  All of my prior mounts only had polar scopes on the RA axis of rotation, which never have to be removed, so I never gave it a thought.  


T


CP4 Sharing?

Bill Long
 

Quick question -- I have an 1100 with AE and a CP4 and a Mach 1 with CP3-V2 Chip. If I wanted to, would I be able to share the CP4 between the two mounts? Assuming that any curve stored in the CP4 would be for use with the Mach 1, and the 1100 would of course just use the encoders.

-Bill


Re: RAPAS on Mach2

Terri Zittritsch
 

I thought I'd confirm, for those interested in using the Polemaster, that my exposure time increase did fix my accuracy issues in the fine tune step of polar alignment.
Last night, I measured a DEC drift of essentially zero again in PHD2 using only the Polemaster.      So if you're getting poor results, like I was, turn up the exposure time.   I was previously turning up both exposure and gain, last night after thinking about gain vs. exposure, I turned up just exposure and received the same good results.   So I have to retract my first post comments about accuracy, the Polemaster can do a very good job.

I also adjusted my RAPAS, to the best that I could do.. this is a tricky process, in the dark, with two small allan wrenches.    I tried some repeatability tests, plugging and unplugging the RAPAS.   There is some small amount of seating that I noticed.. that I need to wiggle (wrong word but don't have the right one) the RAPAS bracket, for the image location to stabilize.   It's more grabbing the bracket and flexing back and forth.. but it was repeatable and now that I know I must do it, it's ok.   Next time I will check how good the RAPAS polar aligns compared to Polemaster.

As a public service warning: 
Note, that while in the dark, be VERY CAREFUL about rotating a Mach2 with RAPAS attached.   My head does not allow me to get my dominant eye (right eye) into the RAPAS with a telescope installed.   So I have to rotate the scope to opposite side of RAPAS, for me it is west, and you have to be careful you don't go too far... because the mount/weights can and will hit the RAPAS and if the weights are up high, it doesn't have to go very far!    

I think APCC or the driver should have a message come up when you unpark Mach2 mounts, that warns you that you should remember to remove the RAPAS or pay careful attention to your rotation  and RAPAS so no collision occurs.  All of my prior mounts only had polar scopes on the RA axis of rotation, which never have to be removed, so I never gave it a thought.  


T


Re: Script to park mount at flat panel #APCC

Geof Lewis
 

Thanks Ray,
I've sent you a private email to your groups3 address.
Regards,

Geof


From: main@ap-gto.groups.io <main@ap-gto.groups.io> on behalf of Ray Gralak <groups3@...>
Sent: 21 April 2020 13:08
To: main@ap-gto.groups.io <main@ap-gto.groups.io>
Subject: Re: [ap-gto] Script to park mount at flat panel #APCC
 
Hi Geof,

> V2 driver continues to allow me to park with CW up, BUT since  August last year, on start up after thus parking I
> started to get GOTO position errors, i.e. the mount would not slew to target correctly anymore, it would be a couple

The driver by itself cannot introduce pointing errors unless the mount initialization parameters were wrong. That can happen when
the mount is unparked from one of the park positions instead of unparking/resuming from last parked position when the mount wasn't
actually at that park position. Also, mixing initialization between the hand controller and the computer can cause an issue if
time/time zone/latitude/longitude are different between the two, or if you parked with one and unparked from a park position with
the other.

So, assuming you have a permanent setup, to reduce the possibility of introducing pointing errors because of  wrong initialization
parameters:

1) Consistently use one method for mount initialization (computer or HC) and parking.
2) Always unpark/resume from last parked position unless you physically unclutched the mount and moved it to a different position.
3) Make sure you have up to date mount firmware (V, V1, or V2 for the GTOCP3, and VCP4-P01-13 for the GTOCP4).
4) Use the latest version of the driver, v5.30.10:

https://www.gralak.com/apdriver/AstroPhysics_V2_Setup_5.30.10.exe

If you still have pointing problems and are using the driver exclusively for initialization/parking then we will need to get your
logs to look into the issue.

-Ray Gralak
Author of APCC (Astro-Physics Command Center): https://www.astro-physics.com/apcc-pro
Author of PEMPro V3:  https://www.ccdware.com
Author of Astro-Physics V2 ASCOM Driver: https://www.siriusimaging.com/apdriver


> -----Original Message-----
> From: main@ap-gto.groups.io [mailto:main@ap-gto.groups.io] On Behalf Of Geof Lewis
> Sent: Tuesday, April 21, 2020 2:45 AM
> To: main@ap-gto.groups.io
> Subject: Re: [ap-gto] Script to park mount at flat panel #APCC
>
> Hi Ray,
> I don't own APCC, I just use the V2 driver. To be more accurate in my description of the problem, it is true that the
> V2 driver continues to allow me to park with CW up, BUT since  August last year, on start up after thus parking I
> started to get GOTO position errors, i.e. the mount would not slew to target correctly anymore, it would be a couple
> of hours out, which problem was repeatable. I spoke to George at AP and exchanged emails with George and
> Howard, but without resolution, other than a recommendation that it was unadvisable to park CW up. Hence, I
> decided to relocate my flat panel to be able to park with the telescope facing it with CW down, since when the
> mount has never lost it's position. I don't know what changed, but I've had my observatory for 4 years and for 3
> years had previously always parked in the same custom AltAz CW up position without any issue. Last year I had
> been doing planetary imaging for a couple of months in the summer for which I don't use my computer for GOTO
> slews, just manually slew using the HC, then my mum died in July so everything astronomy related went on the
> back burner. Towards the end of August 2019, I started DSO imaging again and had issues with the GOTO being
> way off and plate solves using PS2 in SGP not solving. I manually synced the mount using the HC to slew to
> target and all was well for the session with accurate GOTOs, but the next and subsequent nights I had the same
> issue. The only thing that had changed was that I had updated the V2 driver, so rightly or wrongly concluded that
> was a factor and telephoned George about it, who brought Howard into the loop. We exchanged a few emails, but
> there was no resolution other than me relocating the flat panel to the opposite corner of my observatory, so that I
> now use a custom AltAz park with CW down.
> I have some of the email thread with George and Howard from August last year if you want to see it, but it is no
> longer an issue for me as I now don't park in my old CW down position.
> Regards,
>
> Geof
>
> ________________________________
>
> From: main@ap-gto.groups.io <main@ap-gto.groups.io> on behalf of Ray Gralak <groups3@...>
> Sent: 21 April 2020 04:09
> To: main@ap-gto.groups.io <main@ap-gto.groups.io>
> Subject: Re: [ap-gto] Script to park mount at flat panel #APCC
>
> Hi Geof,
>
> > Please note that I used to be able to
> > park in a CW up position, but one of the V2 driver updates last year didn't like that, so I had to move my light
> panel
> > 180 degrees away to the diagonally opposite corner log my observatory, so that I could use an AltAz custom park
> > with CW down, since when I've not had any issues.
>
> Are you sure that the reason wasn't that you were using APCC? The driver alone has been able to park to a
> custom CW up position for
> some time, but until recently APCC could not.  Starting with version 1.8.0.0, APCC can park to a custom
> counterweight up and/or
> below horizon position.
>
> -Ray Gralak
> Author of APCC (Astro-Physics Command Center): https://www.astro-physics.com/apcc-pro <https://www.astro-
> physics.com/apcc-pro>
> Author of PEMPro V3:  https://www.ccdware.com
> Author of Astro-Physics V2 ASCOM Driver: https://www.siriusimaging.com/apdriver
> <https://www.siriusimaging.com/apdriver>
>
> > -----Original Message-----
> > From: main@ap-gto.groups.io [mailto:main@ap-gto.groups.io] On Behalf Of Geof Lewis
> > Sent: Monday, April 20, 2020 8:33 AM
> > To: main@ap-gto.groups.io
> > Subject: Re: [ap-gto] Script to park mount at flat panel #APCC
> >
> > I also use SGP and have a flat panel on the wall of my observatory. All I did was set a custom AltAz park position
> > in the V2 driver so that the OTA points square to the flat panel when parked. Please note that I used to be able to
> > park in a CW up position, but one of the V2 driver updates last year didn't like that, so I had to move my light
> panel
> > 180 degrees away to the diagonally opposite corner log my observatory, so that I could use an AltAz custom park
> > with CW down, since when I've not had any issues.
> >
> > Geof
> >
> > Get Outlook for iOS <https://aka.ms/o0ukef>
> > ________________________________
> >
> > From: main@ap-gto.groups.io <main@ap-gto.groups.io> on behalf of Ray Gralak <groups3@...>
> > Sent: Monday, April 20, 2020 4:23 pm
> > To: main@ap-gto.groups.io
> > Subject: Re: [ap-gto] Script to park mount at flat panel #APCC
> >
> > Hi Rathi,
> >
> > The attached vbscript file can slew the mount to Alt/Az coordinates and exit when the slew has completed.
> >
> > You will need to change the Alt Az values in the script to the values for your flat panel. You will also need to
> > rename the file without the ".txt". It needs to have a file extension ".vbs".
> >
> > -Ray Gralak
> > Author of APCC (Astro-Physics Command Center): https://www.astro-physics.com/apcc-pro <https://www.astro-
> physics.com/apcc-pro>  <https://www.astro-
> > physics.com/apcc-pro>
> > Author of PEMPro V3:  https://www.ccdware.com
> > Author of Astro-Physics V2 ASCOM Driver: https://www.siriusimaging.com/apdriver
> <https://www.siriusimaging.com/apdriver>
> > <https://www.siriusimaging.com/apdriver>
> >
> > > -----Original Message-----
> > > From: main@ap-gto.groups.io [mailto:main@ap-gto.groups.io] On Behalf Of Rathi Banerjee
> > > Sent: Sunday, April 19, 2020 12:24 PM
> > > To: main@ap-gto.groups.io
> > > Subject: [ap-gto] Script to park mount at flat panel #APCC
> > >
> > > Hi everyone,
> > >
> > > Is there a way to move my telescope to a specific Alt/Az position (location of my flat panel on my observatory
> > wall)
> > > via a script? I use SGP to image and it does not support going to a specified Alt/Az position to take flats, but it
> > does
> > > support running a script before taking flats.
> > >
> > > Thanks,
> > > -Rathi.
> > >
> >
> >
> >
> >
> >
>
>
>
>
>
>




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