Date   

Does the USB port work on the CP4 if I am connected via Ethernet?

George Thomas
 

I am connected to my CP4 box via Ethernet and everything there works fine. I decided to hook up my mount usb devices and have them connect into the usb port on the CP4 box. But when I do this, I don't see any of my usb devices: focuser, guide camera, etc.


Can I use the USB port for this purpose while connected via ethernet?  If so, any thoughts on further troubleshooting/suggestions?


Thx,


George Thomas


Re: Triplet Lens -vs- Doublet Lens

George OBrien
 

PixInsight has a function called DynamicAlignment for correction of image scale. I suspect the scale change due to slight differences in wavelength would be miniscule, however.

Also, to be clear the refocusing is only necessary when you change NB filters, not for each subframe.

George



From: Stuart Heggie stuart.j.heggie@gmail.com [ap-gto]
Sent: Friday, August 17, 2018 3:11 PM
To: ap-gto@yahoogroups.com
Subject: Re: [ap-gto] Triplet Lens -vs- Doublet Lens

 
George, I was thinking the same thing. The image scale changes very slightly.  

Stuart

On Fri, Aug 17, 2018 at 3:07 PM George george@astro-physics.com [ap-gto] <ap-gto@yahoogroups.com> wrote:
 
Remember…since you are refocusing for each image the image scale is changing.
 
Regards,
 
George
 
George Whitney
Astro-Physics, Inc.
Phone:  815-282-1513
Email:  george@astro-physics.com
 
From: ap-gto@yahoogroups.com [mailto:ap-gto@yahoogroups.com]
Sent: Friday, August 17, 2018 1:47 PM
To: ap-gto@yahoogroups.com
Subject: RE: [ap-gto] Triplet Lens -vs- Doublet Lens
 
 
I don’t mean to butt-in, but I think Charlie is on to something. Each NB image will have been focused independently. There would be no chromatic aberration because each set of images will be in focus, albeit on what would have been different focal planes. Registering and combining the images would seem to work fine.

I think this makes sense, coming from an old physicist.

Clear skies,
George

From: Stuart Heggie stuart.j.heggie@gmail.com [ap-gto]
Sent: Friday, August 17, 2018 2:08 PM
To: ap-gto@yahoogroups.com
Subject: Re: [ap-gto] Triplet Lens -vs- Doublet Lens

 
I would think if you plan to combine the NB data later into a false colour image you’ll have the same problem. If your goal is pure B&W then I’d guess you’d be fine. 

Stuart

On Fri, Aug 17, 2018 at 12:43 PM acf900gto@gmail.com [ap-gto] <ap-gto@yahoogroups.com> wrote:
 
As we know, one of the benefits of a triplet lens is that it brings the three primary colors to a single focus while a doublet lens can only bring two of the primary colors to a common focus.  The third forms a kind of blur circle around the other two.

However, if I am doing narrow band imaging with something like a 5nm band pass Ha filter, I am only bringing a single "color" to a focus.  So, it would seem that it would be possible to do quality narrow band imaging with a good quality ED doublet lens.    A 6" ED doublet refractor is certainly a lot more affordable than a 6" ED triplet!

Is there any reason to believe an Ha image from a doublet would be of lower quality than an Ha image taken with a triplet?

Charlie

--
Stuart Heggie
http://www.stuartheggie.com/featured.html

[Non-text portions of this message have been removed]
--
Stuart Heggie
http://www.stuartheggie.com/featured.html


Re: Triplet Lens -vs- Doublet Lens

George
 

…but does it rescale radially???

 

Regards,

 

George

 

George Whitney

Astro-Physics, Inc.

Phone:  815-282-1513

Email:  george@...

 

From: ap-gto@... [mailto:ap-gto@...]
Sent: Friday, August 17, 2018 3:21 PM
To: ap-gto@...
Subject: RE: [ap-gto] Triplet Lens -vs- Doublet Lens

 

 

PixInsight does rescale images.

 

Clear skies

 

Antoine

 

De : ap-gto@... <ap-gto@...>
Envoyé : vendredi 17 août 2018 21:49
À : ap-gto@...
Objet : Re: [ap-gto] Triplet Lens -vs- Doublet Lens

 

 

My memory of using Maxim was that it only handled rotation and translation. 

 

Registar handles scaling. Not sure about PixInsight. 

 

Stuart

 

On Fri, Aug 17, 2018 at 3:13 PM Michael Fulbright mike.fulbright@... [ap-gto] <ap-gto@...> wrote:

 

Any decent software for image registration and stacking will rectify any slight image scale difference.

Michael Fulbright

 

On 8/17/2018 3:11 PM, Stuart Heggie stuart.j.heggie@... [ap-gto] wrote:

 

George, I was thinking the same thing. The image scale changes very slightly.  

 

Stuart

 

On Fri, Aug 17, 2018 at 3:07 PM George george@... [ap-gto] <ap-gto@...> wrote:

 

Remember…since you are refocusing for each image the image scale is changing.

 

Regards,

 

George

 

George Whitney

Astro-Physics, Inc.

Phone:  815-282-1513

Email:  george@...

 

From: ap-gto@... [mailto:ap-gto@...]
Sent: Friday, August 17, 2018 1:47 PM
To: ap-gto@...
Subject: RE: [ap-gto] Triplet Lens -vs- Doublet Lens

 

 

I don’t mean to butt-in, but I think Charlie is on to something. Each NB image will have been focused independently. There would be no chromatic aberration because each set of images will be in focus, albeit on what would have been different focal planes. Registering and combining the images would seem to work fine.

I think this makes sense, coming from an old physicist.

Clear skies,
George

From: Stuart Heggie stuart.j.heggie@... [ap-gto]
Sent: Friday, August 17, 2018 2:08 PM
To: ap-gto@...
Subject: Re: [ap-gto] Triplet Lens -vs- Doublet Lens

 
I would think if you plan to combine the NB data later into a false colour image you’ll have the same problem. If your goal is pure B&W then I’d guess you’d be fine. 

Stuart

On Fri, Aug 17, 2018 at 12:43 PM acf900gto@... [ap-gto] <ap-gto@...> wrote:
 
As we know, one of the benefits of a triplet lens is that it brings the three primary colors to a single focus while a doublet lens can only bring two of the primary colors to a common focus.  The third forms a kind of blur circle around the other two.

However, if I am doing narrow band imaging with something like a 5nm band pass Ha filter, I am only bringing a single "color" to a focus.  So, it would seem that it would be possible to do quality narrow band imaging with a good quality ED doublet lens.    A 6" ED doublet refractor is certainly a lot more affordable than a 6" ED triplet!

Is there any reason to believe an Ha image from a doublet would be of lower quality than an Ha image taken with a triplet?

Charlie

--
Stuart Heggie
http://www.stuartheggie.com/featured.html

[Non-text portions of this message have been removed]

--

 

--

 

Garanti sans virus. www.avast.com


Re: Triplet Lens -vs- Doublet Lens

Antoine PAVLIN
 

PixInsight does rescale images.

 

Clear skies

 

Antoine

 

De : ap-gto@...
Envoyé : vendredi 17 août 2018 21:49
À : ap-gto@...
Objet : Re: [ap-gto] Triplet Lens -vs- Doublet Lens

 

 

My memory of using Maxim was that it only handled rotation and translation. 

 

Registar handles scaling. Not sure about PixInsight. 

 

Stuart

 

On Fri, Aug 17, 2018 at 3:13 PM Michael Fulbright mike.fulbright@... [ap-gto] <ap-gto@...> wrote:

 

Any decent software for image registration and stacking will rectify any slight image scale difference.

Michael Fulbright

 

On 8/17/2018 3:11 PM, Stuart Heggie stuart.j.heggie@... [ap-gto] wrote:

 

George, I was thinking the same thing. The image scale changes very slightly.  

 

Stuart

 

On Fri, Aug 17, 2018 at 3:07 PM George george@... [ap-gto] <ap-gto@...> wrote:

 

Remember…since you are refocusing for each image the image scale is changing.

 

Regards,

 

George

 

George Whitney

Astro-Physics, Inc.

Phone:  815-282-1513

Email:  george@...

 

From: ap-gto@... [mailto:ap-gto@...]
Sent: Friday, August 17, 2018 1:47 PM
To: ap-gto@...
Subject: RE: [ap-gto] Triplet Lens -vs- Doublet Lens

 

 

I don’t mean to butt-in, but I think Charlie is on to something. Each NB image will have been focused independently. There would be no chromatic aberration because each set of images will be in focus, albeit on what would have been different focal planes. Registering and combining the images would seem to work fine.

I think this makes sense, coming from an old physicist.

Clear skies,
George

From: Stuart Heggie stuart.j.heggie@... [ap-gto]
Sent: Friday, August 17, 2018 2:08 PM
To: ap-gto@...
Subject: Re: [ap-gto] Triplet Lens -vs- Doublet Lens

 
I would think if you plan to combine the NB data later into a false colour image you’ll have the same problem. If your goal is pure B&W then I’d guess you’d be fine. 

Stuart

On Fri, Aug 17, 2018 at 12:43 PM acf900gto@... [ap-gto] <ap-gto@...> wrote:
 
As we know, one of the benefits of a triplet lens is that it brings the three primary colors to a single focus while a doublet lens can only bring two of the primary colors to a common focus.  The third forms a kind of blur circle around the other two.

However, if I am doing narrow band imaging with something like a 5nm band pass Ha filter, I am only bringing a single "color" to a focus.  So, it would seem that it would be possible to do quality narrow band imaging with a good quality ED doublet lens.    A 6" ED doublet refractor is certainly a lot more affordable than a 6" ED triplet!

Is there any reason to believe an Ha image from a doublet would be of lower quality than an Ha image taken with a triplet?

Charlie

--
Stuart Heggie
http://www.stuartheggie.com/featured.html

[Non-text portions of this message have been removed]

--

 

--


Garanti sans virus. www.avast.com


Re: Triplet Lens -vs- Doublet Lens

Stuart Heggie <stuart.j.heggie@...>
 

My memory of using Maxim was that it only handled rotation and translation. 

Registar handles scaling. Not sure about PixInsight. 

Stuart

On Fri, Aug 17, 2018 at 3:13 PM Michael Fulbright mike.fulbright@... [ap-gto] <ap-gto@...> wrote:
 

Any decent software for image registration and stacking will rectify any slight image scale difference.

Michael Fulbright



On 8/17/2018 3:11 PM, Stuart Heggie stuart.j.heggie@... [ap-gto] wrote:
 
George, I was thinking the same thing. The image scale changes very slightly.  

Stuart

On Fri, Aug 17, 2018 at 3:07 PM George george@... [ap-gto] <ap-gto@...> wrote:
 

Remember…since you are refocusing for each image the image scale is changing.

 

Regards,

 

George

 

George Whitney

Astro-Physics, Inc.

Phone:  815-282-1513

Email:  george@...

 

From: ap-gto@... [mailto:ap-gto@...]
Sent: Friday, August 17, 2018 1:47 PM
To: ap-gto@...
Subject: RE: [ap-gto] Triplet Lens -vs- Doublet Lens

 

 

I don’t mean to butt-in, but I think Charlie is on to something. Each NB image will have been focused independently. There would be no chromatic aberration because each set of images will be in focus, albeit on what would have been different focal planes. Registering and combining the images would seem to work fine.

I think this makes sense, coming from an old physicist.

Clear skies,
George

From: Stuart Heggie stuart.j.heggie@... [ap-gto]
Sent: Friday, August 17, 2018 2:08 PM
To: ap-gto@...
Subject: Re: [ap-gto] Triplet Lens -vs- Doublet Lens

 
I would think if you plan to combine the NB data later into a false colour image you’ll have the same problem. If your goal is pure B&W then I’d guess you’d be fine. 

Stuart

On Fri, Aug 17, 2018 at 12:43 PM acf900gto@... [ap-gto] <ap-gto@...> wrote:
 
As we know, one of the benefits of a triplet lens is that it brings the three primary colors to a single focus while a doublet lens can only bring two of the primary colors to a common focus.  The third forms a kind of blur circle around the other two.

However, if I am doing narrow band imaging with something like a 5nm band pass Ha filter, I am only bringing a single "color" to a focus.  So, it would seem that it would be possible to do quality narrow band imaging with a good quality ED doublet lens.    A 6" ED doublet refractor is certainly a lot more affordable than a 6" ED triplet!

Is there any reason to believe an Ha image from a doublet would be of lower quality than an Ha image taken with a triplet?

Charlie

--
Stuart Heggie
http://www.stuartheggie.com/featured.html

[Non-text portions of this message have been removed]

--


Re: Triplet Lens -vs- Doublet Lens

Michael Fulbright <mike.fulbright@...>
 

Any decent software for image registration and stacking will rectify any slight image scale difference.

Michael Fulbright

On 8/17/2018 3:11 PM, Stuart Heggie stuart.j.heggie@... [ap-gto] wrote:
 
George, I was thinking the same thing. The image scale changes very slightly.  

Stuart

On Fri, Aug 17, 2018 at 3:07 PM George george@... [ap-gto] <ap-gto@...> wrote:
 

Remember…since you are refocusing for each image the image scale is changing.

 

Regards,

 

George

 

George Whitney

Astro-Physics, Inc.

Phone:  815-282-1513

Email:  george@...

 

From: ap-gto@... [mailto:ap-gto@...]
Sent: Friday, August 17, 2018 1:47 PM
To: ap-gto@...
Subject: RE: [ap-gto] Triplet Lens -vs- Doublet Lens

 

 

I don’t mean to butt-in, but I think Charlie is on to something. Each NB image will have been focused independently. There would be no chromatic aberration because each set of images will be in focus, albeit on what would have been different focal planes. Registering and combining the images would seem to work fine.

I think this makes sense, coming from an old physicist.

Clear skies,
George

From: Stuart Heggie stuart.j.heggie@... [ap-gto]
Sent: Friday, August 17, 2018 2:08 PM
To: ap-gto@...
Subject: Re: [ap-gto] Triplet Lens -vs- Doublet Lens

 
I would think if you plan to combine the NB data later into a false colour image you’ll have the same problem. If your goal is pure B&W then I’d guess you’d be fine. 

Stuart

On Fri, Aug 17, 2018 at 12:43 PM acf900gto@... [ap-gto] <ap-gto@...> wrote:
 
As we know, one of the benefits of a triplet lens is that it brings the three primary colors to a single focus while a doublet lens can only bring two of the primary colors to a common focus.  The third forms a kind of blur circle around the other two.

However, if I am doing narrow band imaging with something like a 5nm band pass Ha filter, I am only bringing a single "color" to a focus.  So, it would seem that it would be possible to do quality narrow band imaging with a good quality ED doublet lens.    A 6" ED doublet refractor is certainly a lot more affordable than a 6" ED triplet!

Is there any reason to believe an Ha image from a doublet would be of lower quality than an Ha image taken with a triplet?

Charlie

--
Stuart Heggie
http://www.stuartheggie.com/featured.html

[Non-text portions of this message have been removed]

--


Re: Triplet Lens -vs- Doublet Lens

Stuart Heggie <stuart.j.heggie@...>
 

George, I was thinking the same thing. The image scale changes very slightly.  

Stuart

On Fri, Aug 17, 2018 at 3:07 PM George george@... [ap-gto] <ap-gto@...> wrote:
 

Remember…since you are refocusing for each image the image scale is changing.

 

Regards,

 

George

 

George Whitney

Astro-Physics, Inc.

Phone:  815-282-1513

Email:  george@...

 

From: ap-gto@... [mailto:ap-gto@...]
Sent: Friday, August 17, 2018 1:47 PM
To: ap-gto@...
Subject: RE: [ap-gto] Triplet Lens -vs- Doublet Lens

 

 

I don’t mean to butt-in, but I think Charlie is on to something. Each NB image will have been focused independently. There would be no chromatic aberration because each set of images will be in focus, albeit on what would have been different focal planes. Registering and combining the images would seem to work fine.

I think this makes sense, coming from an old physicist.

Clear skies,
George

From: Stuart Heggie stuart.j.heggie@... [ap-gto]
Sent: Friday, August 17, 2018 2:08 PM
To: ap-gto@...
Subject: Re: [ap-gto] Triplet Lens -vs- Doublet Lens

 
I would think if you plan to combine the NB data later into a false colour image you’ll have the same problem. If your goal is pure B&W then I’d guess you’d be fine. 

Stuart

On Fri, Aug 17, 2018 at 12:43 PM acf900gto@... [ap-gto] <ap-gto@...> wrote:
 
As we know, one of the benefits of a triplet lens is that it brings the three primary colors to a single focus while a doublet lens can only bring two of the primary colors to a common focus.  The third forms a kind of blur circle around the other two.

However, if I am doing narrow band imaging with something like a 5nm band pass Ha filter, I am only bringing a single "color" to a focus.  So, it would seem that it would be possible to do quality narrow band imaging with a good quality ED doublet lens.    A 6" ED doublet refractor is certainly a lot more affordable than a 6" ED triplet!

Is there any reason to believe an Ha image from a doublet would be of lower quality than an Ha image taken with a triplet?

Charlie

--
Stuart Heggie
http://www.stuartheggie.com/featured.html

[Non-text portions of this message have been removed]


Re: Triplet Lens -vs- Doublet Lens

George
 

Remember…since you are refocusing for each image the image scale is changing.

 

Regards,

 

George

 

George Whitney

Astro-Physics, Inc.

Phone:  815-282-1513

Email:  george@...

 

From: ap-gto@... [mailto:ap-gto@...]
Sent: Friday, August 17, 2018 1:47 PM
To: ap-gto@...
Subject: RE: [ap-gto] Triplet Lens -vs- Doublet Lens

 

 

I don’t mean to butt-in, but I think Charlie is on to something. Each NB image will have been focused independently. There would be no chromatic aberration because each set of images will be in focus, albeit on what would have been different focal planes. Registering and combining the images would seem to work fine.

I think this makes sense, coming from an old physicist.

Clear skies,
George

From: Stuart Heggie stuart.j.heggie@... [ap-gto]
Sent: Friday, August 17, 2018 2:08 PM
To: ap-gto@...
Subject: Re: [ap-gto] Triplet Lens -vs- Doublet Lens

 
I would think if you plan to combine the NB data later into a false colour image you’ll have the same problem. If your goal is pure B&W then I’d guess you’d be fine. 

Stuart

On Fri, Aug 17, 2018 at 12:43 PM acf900gto@... [ap-gto] <ap-gto@...> wrote:
 
As we know, one of the benefits of a triplet lens is that it brings the three primary colors to a single focus while a doublet lens can only bring two of the primary colors to a common focus.  The third forms a kind of blur circle around the other two.

However, if I am doing narrow band imaging with something like a 5nm band pass Ha filter, I am only bringing a single "color" to a focus.  So, it would seem that it would be possible to do quality narrow band imaging with a good quality ED doublet lens.    A 6" ED doublet refractor is certainly a lot more affordable than a 6" ED triplet!

Is there any reason to believe an Ha image from a doublet would be of lower quality than an Ha image taken with a triplet?

Charlie

--
Stuart Heggie
http://www.stuartheggie.com/featured.html

[Non-text portions of this message have been removed]


Re: Triplet Lens -vs- Doublet Lens

George OBrien
 

I don’t mean to butt-in, but I think Charlie is on to something. Each NB image will have been focused independently. There would be no chromatic aberration because each set of images will be in focus, albeit on what would have been different focal planes. Registering and combining the images would seem to work fine.

I think this makes sense, coming from an old physicist.

Clear skies,
George



From: Stuart Heggie stuart.j.heggie@gmail.com [ap-gto]
Sent: Friday, August 17, 2018 2:08 PM
To: ap-gto@yahoogroups.com
Subject: Re: [ap-gto] Triplet Lens -vs- Doublet Lens

 
I would think if you plan to combine the NB data later into a false colour image you’ll have the same problem. If your goal is pure B&W then I’d guess you’d be fine. 

Stuart

On Fri, Aug 17, 2018 at 12:43 PM acf900gto@gmail.com [ap-gto] <ap-gto@yahoogroups.com> wrote:
 
As we know, one of the benefits of a triplet lens is that it brings the three primary colors to a single focus while a doublet lens can only bring two of the primary colors to a common focus.  The third forms a kind of blur circle around the other two.

However, if I am doing narrow band imaging with something like a 5nm band pass Ha filter, I am only bringing a single "color" to a focus.  So, it would seem that it would be possible to do quality narrow band imaging with a good quality ED doublet lens.    A 6" ED doublet refractor is certainly a lot more affordable than a 6" ED triplet!

Is there any reason to believe an Ha image from a doublet would be of lower quality than an Ha image taken with a triplet?

Charlie

--
Stuart Heggie
http://www.stuartheggie.com/featured.html




[Non-text portions of this message have been removed]


Re: Triplet Lens -vs- Doublet Lens

Stuart Heggie <stuart.j.heggie@...>
 

I would think if you plan to combine the NB data later into a false colour image you’ll have the same problem. If your goal is pure B&W then I’d guess you’d be fine. 

Stuart

On Fri, Aug 17, 2018 at 12:43 PM acf900gto@... [ap-gto] <ap-gto@...> wrote:
 

As we know, one of the benefits of a triplet lens is that it brings the three primary colors to a single focus while a doublet lens can only bring two of the primary colors to a common focus.  The third forms a kind of blur circle around the other two.


However, if I am doing narrow band imaging with something like a 5nm band pass Ha filter, I am only bringing a single "color" to a focus.  So, it would seem that it would be possible to do quality narrow band imaging with a good quality ED doublet lens.    A 6" ED doublet refractor is certainly a lot more affordable than a 6" ED triplet!


Is there any reason to believe an Ha image from a doublet would be of lower quality than an Ha image taken with a triplet?


Charlie



Triplet Lens -vs- Doublet Lens

acf900gto@...
 

As we know, one of the benefits of a triplet lens is that it brings the three primary colors to a single focus while a doublet lens can only bring two of the primary colors to a common focus.  The third forms a kind of blur circle around the other two.


However, if I am doing narrow band imaging with something like a 5nm band pass Ha filter, I am only bringing a single "color" to a focus.  So, it would seem that it would be possible to do quality narrow band imaging with a good quality ED doublet lens.    A 6" ED doublet refractor is certainly a lot more affordable than a 6" ED triplet!


Is there any reason to believe an Ha image from a doublet would be of lower quality than an Ha image taken with a triplet?


Charlie



Re: AP1100GTO + Pole Master

richard payne
 

You will need to change the 2  studs which you would screw a cable connector
to. Buttonhead allens will solve the problem. Richard


On Aug 16, 2018, at 7:25 AM, acf900gto@... [ap-gto] <ap-gto@...> wrote:

 

A year ago a buddy in my dark sky site operation bought a Pole Master and matching adapter for his AP900GTO mount.  He was impressed with its ability to improve his polar alignment and he asked me if I wanted to try it with my AP1100GTO.   After verifying the threaded hole in the DEC housing of the 1100GTO was the same as the 900GTO, we installed it on my mount and performed a polar alignment that clearly improved my mount's alignment.


Since I image with multiple OTAs, I decided to purchase my own Pole Master from OPT a couple of weeks ago.  Last night, I went to my observatory to install it and run an alignment routine.  To my great surprise, the Pole Master unit would not fit even though the older model had.  The barrel of the Pole Master camera was just slightly too large to clear the 9 pin data connector on the bottom of the DEC motor housing.  Since the older one had fit, the new production units must be just a tiny bit larger in diameter.


My 1100GTO is one of the original models and not the newer mounts with the locking knobs.


charlie



Re: Saving SYNC/Rcal information

Stephane Charbonnel
 

Hello Ray,

I use this topic to ask questions about pointing model of APPM :

1/ When I use my 10micron mount or when I had a Gemini system on Titan Losmandy, after the first 3 stars, I can see pointing model is refined after each pointing. So, pointing after pointing, the theorical coordinates become nearest apparent coordinates. I think it would be more practical and send less failure for some little fields as I have (I have a very little field of 7' x 7').

2/ Each year, I bought Pinpoint only for APPM and I haven't SGP or so on. I use PRiSM. But I can produce TXT files with a precision of fraction of arcsec with :
* number of field
* Theorical coordinates of center of field.
* Apparent coordinates of center of field
* Pier side of mount.
Could APMM read such a file one day in order to make the pointing model (So I am aware in this case I cannot use the above point 1/ of my request ....).

Regards
Stephane


Re: AP1100GTO + Pole Master

Matthew Hughes
 

Hi Charlie,

I have a polemaster and I put up and pull down my telescope 1100 AE every night. I find the polemaster awesome. With the encoder connector installed I never even tried to fit it there. I place it on my mounting plate using the bracket from ADM.and a clamp.

Here’s a video.

https://youtu.be/8MKABNWaEx4

Have a look on the ADM website they have them there.. I’m polar aligned in about 4 minutes.

Matt


AP1100GTO + Pole Master

acf900gto@...
 

A year ago a buddy in my dark sky site operation bought a Pole Master and matching adapter for his AP900GTO mount.  He was impressed with its ability to improve his polar alignment and he asked me if I wanted to try it with my AP1100GTO.   After verifying the threaded hole in the DEC housing of the 1100GTO was the same as the 900GTO, we installed it on my mount and performed a polar alignment that clearly improved my mount's alignment.


Since I image with multiple OTAs, I decided to purchase my own Pole Master from OPT a couple of weeks ago.  Last night, I went to my observatory to install it and run an alignment routine.  To my great surprise, the Pole Master unit would not fit even though the older model had.  The barrel of the Pole Master camera was just slightly too large to clear the 9 pin data connector on the bottom of the DEC motor housing.  Since the older one had fit, the new production units must be just a tiny bit larger in diameter.


My 1100GTO is one of the original models and not the newer mounts with the locking knobs.


charlie



Re: Saving SYNC/Rcal information

Eduardo Oliveira
 

Hi Ray,

Thank you very much for helping me with this...

Eduardo.

Em qui, 16 de ago de 2018 às 10:39, 'Ray Gralak (Groups)' groups3@... [ap-gto] <ap-gto@...> escreveu:

 

Hi Joe,

> .... “APCC can also monitor temperature, humidity, and barometric pressure to calculate a better estimate of
> refraction“
>
> Which version of APCC PRO added this feature, and which T & H devices are supported? –
> I must have missed the announcement - or is this still a “future option”?

The next release of APCC, which has been completed and is in internal testing at A-P, can use any ASCOM ObservingConditions driver.

That said, APCC has always had the ability to calculate refraction from temperature, humidity, and pressure. Local temperature and humidity values could be polled from the THUM device. And pressure, which doesn't change very rapidly, could be entered manually or changed programmatically from an external ASCOM client application (also, these environmental values can be read programmatically).

-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: Thursday, August 16, 2018 6:15 AM
> To: ap-gto@...
> Subject: Re: [ap-gto] Saving SYNC/Rcal information
>
>
>
> Ray,
>
> .... “APCC can also monitor temperature, humidity, and barometric pressure to calculate a better estimate of
> refraction“
>
> Which version of APCC PRO added this feature, and which T & H devices are supported? – I must have missed
> the announcement -
> or is this still a “future option”?
>
> Joe
>
>


Re: Saving SYNC/Rcal information

Ray Gralak
 

Hi Joe,

.... “APCC can also monitor temperature, humidity, and barometric pressure to calculate a better estimate of
refraction“

Which version of APCC PRO added this feature, and which T & H devices are supported? –
I must have missed the announcement - or is this still a “future option”?
The next release of APCC, which has been completed and is in internal testing at A-P, can use any ASCOM ObservingConditions driver.

That said, APCC has always had the ability to calculate refraction from temperature, humidity, and pressure. Local temperature and humidity values could be polled from the THUM device. And pressure, which doesn't change very rapidly, could be entered manually or changed programmatically from an external ASCOM client application (also, these environmental values can be read programmatically).

-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@yahoogroups.com [mailto:ap-gto@yahoogroups.com]
Sent: Thursday, August 16, 2018 6:15 AM
To: ap-gto@yahoogroups.com
Subject: Re: [ap-gto] Saving SYNC/Rcal information



Ray,

.... “APCC can also monitor temperature, humidity, and barometric pressure to calculate a better estimate of
refraction“

Which version of APCC PRO added this feature, and which T & H devices are supported? – I must have missed
the announcement -
or is this still a “future option”?

Joe


Re: Saving SYNC/Rcal information

Joe Zeglinski
 

Ray,
 
.... “APCC can also monitor temperature, humidity, and barometric pressure to calculate a better  estimate of refraction“
 
    Which version of APCC PRO added this feature, and which T & H devices are supported? – I must have missed the announcement -
or is this still a “future option”?
 
Joe


Re: Saving SYNC/Rcal information

Ray Gralak
 

Hi Eduardo,

I am using APCC (standard version) and AP V2 Ascom driver with my
Mach1 GTO CP4 mount. I use CdC and Astrophotography
tools to point the telescope to targets.
My question is: Do these sync commands improve the pointing accuracy of the mount on
subsequent slews?
Accuracy is improved only in the area where the recal/sync was performed.

Does this "pointing model" that is created with the multiple sync commands during one session
remains available when I power down the mount and initiate a new session next day (assuming of course I did not
loosened the clutches)? If it's not, can it be saved for future use?
APCC Standard does not include a pointing model, so an RCAL/SYNC only would only potentially improve pointing accuracy near the RCAL/Sync position.

However, APCC Pro can create a pointing model from pointing data collected by APPM (AP Point Mapper) which is included with APCC Pro. After APPM maps a number of sky points, APCC can load the pointing data to create a pointing correction and tracking rate correction model for the mount and telescope. APCC can also monitor temperature, humidity, and barometric pressure to calculate a better estimate of refraction.

That said, RCALs and SYNCs do not add to APCC Pro's model. They just update the scope's position within the model.

-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@yahoogroups.com [mailto:ap-gto@yahoogroups.com]
Sent: Tuesday, August 14, 2018 8:03 AM
To: ap-gto@yahoogroups.com
Subject: [ap-gto] Saving SYNC/Rcal information



Hi everyone,




I am sorry if this is answered somewhere else, but I could not find using Yahoo search engine. I am using APCC
(standard version) and AP V2 Ascom driver with my Mach1 GTO CP4 mount. I use CdC and Astrophotography
tools to point the telescope to targets. What I usually do is to send a Goto++ command in APT. This uses plate
solve to iteratively put the telescope within X pixels of my target (X being the error threshold that I can configure to
accept). When the target is at the center of the FOV I then issue a sync command which I presume will be
translated into Rcal command to the controller since I have "Use Rcal for Syncs" option enabled at AP V2 Ascom
driver. In a typical session I can issue between 3 to five sync commands for different targets or stars I use for
focusing the scope. My question is: Do these sync commands improve the pointing accuracy of the mount on
subsequent slews? Does this "pointing model" that is created with the multiple sync commands during one session
remains available when I power down the mount and initiate a new session next day (assuming of course I did not
loosened the clutches)? If it's not, can it be saved for future use?




Thank you all,




Eduardo





Re: Mach 1 Milestone – GearBox

Paul
 

Agreed.


And I must also add that polar alignment is a delight with the smooth and precise knobs.

My old EQ6 was clunky and the two axes seemed to interfere with each other a bit too. This is buttery smooth and the axes are completely independent. It makes PA with Sharpcap and the Mach1 a pleasure rather than a step in the setup to be dreaded!!


Paul

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