Date   

Re: Keep AP900GTO outside

steven ho
 

I image all year long hence my AP900 remains outside 365 days a year. I cover the mount and CP4 with this..

http://www.telegizmos.com/365%20sizes%20and%20prices%20page%202.htm

www.telegizmos.com
Dealers & Ordering click here. Contact us direct: Monday-Friday, 9-4 CST, 972-849-9240 . email us... sales@.... 365 Series Covers...

And also use this to reduce moisture...


https://www.amazon.com/gp/product/B00D1WYXR0


steve hoffman



From: ap-gto@...
Sent: Wednesday, August 30, 2017 7:34 AM
To: ap-gto@...
Subject: [ap-gto] Keep AP900GTO outside
 
 

Hello group :o)

I'm a very happy new user of AP900GTO mount and this is my first message.
I use it since a few weeks and everything is OK.

I'm using it on a permanent pier.
Every session i take it out, use it and take it inside after.

Of course i have to do a correct polar alignement at each session.

A solution to avoid redoing polar alignement each time is to let the lower part of the mount permanently outside and cover it with something waterproof and sun/heat proof. I can remove the CP3 Box easily after every session. I was think at a wooden box with big insulation but with air flowing through from the bottom.

What do you think about this ? Do you think this can give problems ? Corrosion problems, heat problems ...

Thanks a lot,

Cheers



Re: Keep AP900GTO outside

Konstantin von Poschinger
 

Hi,

Till now I let all my mounts, 1200 900 and now 1600 outside. I remove the control box and the counter wight shaft. Then I cover it first with a thin plastic sack. Then I put a sack made of truck cover it.

Grüsse

Konstantin

Konstantin v. Poschinger


Hammerichstr. 5
22605 Hamburg
040/8805747
0171/1983476

Am 30.08.2017 um 13:34 schrieb georges.reif@... [ap-gto] <ap-gto@...>:

 

Hello group :o)

I'm a very happy new user of AP900GTO mount and this is my first message.
I use it since a few weeks and everything is OK.

I'm using it on a permanent pier.
Every session i take it out, use it and take it inside after.

Of course i have to do a correct polar alignement at each session.

A solution to avoid redoing polar alignement each time is to let the lower part of the mount permanently outside and cover it with something waterproof and sun/heat proof. I can remove the CP3 Box easily after every session. I was think at a wooden box with big insulation but with air flowing through from the bottom.

What do you think about this ? Do you think this can give problems ? Corrosion problems, heat problems ...

Thanks a lot,

Cheers



Re: Keep AP900GTO outside

clink6
 

I keep an A-P Mach 1 mount outside.  I store it (polar aligned) under an insulated TeleGizmos cover (www.telegizmos.com).  I only remove the OTA and power supply to store indoors after an observing session.  I've done this for almost three years with no observable issues with the electronics.

Best regards,
Bob Rosenstein


Keep AP900GTO outside

georges.reif@...
 

Hello group :o)

I'm a very happy new user of AP900GTO mount and this is my first message.
I use it since a few weeks and everything is OK.

I'm using it on a permanent pier.
Every session i take it out, use it and take it inside after.

Of course i have to do a correct polar alignement at each session.

A solution to avoid redoing polar alignement each time is to let the lower part of the mount permanently outside and cover it with something waterproof and sun/heat proof. I can remove the CP3 Box easily after every session. I was think at a wooden box with big insulation but with air flowing through from the bottom.

What do you think about this ? Do you think this can give problems ? Corrosion problems, heat problems ...

Thanks a lot,

Cheers



Re: Home position

Carmine Iaffaldano
 

sorry ... i am not interested to continue this diatribe also because I do not know very well the English language and I'm struggling to understand the meaning of many things all you say; i know that 10 Micron has its own property ascom driver and i know that 10 micron mount can go also without ascom driver with its native software; its native software (10 years ago) had the function that now has APCC (stars model, limits, balance routine and more); i purchased  an AP 1100 mount because after i was in Spain at Astrocamp i decided to go in a remote hosting in Arizona but do not ship my italian mount and to buy a mount well knowed and used in USA (ad recommended by the american hosting); the cross change at that time was very convenient. I don't know the last model of 10 Micron but i consider them too expensive for me.  I have experimented with your GTO 1100 mount many problems of lost alignment and parking position that are not always a tecnical explanation. As i am in remote these problems are very unpleased. Other i have not to say.


Re: Meridian Flip

Roland Christen
 

You do it by advancing or delaying the meridian. Then click on the object and the scope will flip to the other side.

Rolando



-----Original Message-----
From: raypalmer@... [ap-gto]
To: ap-gto
Sent: Tue, Aug 29, 2017 7:27 pm
Subject: [ap-gto] Meridian Flip



Hi,

Is there a way to do a meridian flip yet? I use the skyx to control my 1600GTO, but on many occasions and for numerous different reasons a meridian flip is the most professional way to start an imaging session. 

I have read that clicking a second time on the target (once the scope is already on a target) inside the planetarium software will cause a meridian flip, however this doesn't work on my setup (unless there has been an upgrade in the driver software). 

Last time I upgraded the hand pad was about a year ago, so please let me know if Meridian flip has been added as a function. 

Cheers

Ray



Meridian Flip

raypalmer77
 

Hi,


Is there a way to do a meridian flip yet? I use the skyx to control my 1600GTO, but on many occasions and for numerous different reasons a meridian flip is the most professional way to start an imaging session. 


I have read that clicking a second time on the target (once the scope is already on a target) inside the planetarium software will cause a meridian flip, however this doesn't work on my setup (unless there has been an upgrade in the driver software). 


Last time I upgraded the hand pad was about a year ago, so please let me know if Meridian flip has been added as a function. 


Cheers


Ray


Re: [ap-ug] Astrocon and Casper eclipse

Chris Cook
 

Looking good!

Chris

----- Original Message -----
From: "chris1011@aol.com [ap-ug]" <ap-ug@yahoogroups.com>
To: <ap-ug@yahoogroups.com>; <ap-gto@yahoogroups.com>
Sent: Tuesday, August 29, 2017 5:03 PM
Subject: Re: [ap-ug] Astrocon and Casper eclipse


We also had Christine and my daughter Karen manning the AP booth at Astrocon and enjoying the eclipse on Monday.

Three eclipse ladies from Astro-Physics, left to right Marj, Karen, Christine, after the eclipse in Casper. Marj operating the 130GTX refractor, Karen shot with a Canon digital camera setup and Christine holding the 11x70 binoculars. My 155 refractor setup on 1100 mount in the rear.

https://www.astromart.com/common/image_popup.asp?image=/images/forums/835000-835999/835638.jpg&caption=

Rolando







-----Original Message-----
From: chris1011@aol.com [ap-ug] <ap-ug@yahoogroups.com>
To: ap-gto <ap-gto@yahoogroups.com>; ap-ug <ap-ug@yahoogroups.com>
Sent: Tue, Aug 29, 2017 12:11 pm
Subject: [ap-ug] Astrocon and Casper eclipse




Some further thoughts on our eclipse trip.

Marj and I attended Astrocon in Casper the week before the eclipse. We had our booth set up and met lots of eclipse chasers who came out to hear talks by famous amateurs and professionals during the conference, and check out the latest amateur equipment. The highlight of the conference was the talk by Fred "Mr Eclipse" Espenak. He certainly got the crowd fired up and looking forward to the next morning.

Astrocon officials made available to us a spot at Casper College, up on a hill with sweeping views of the distant mountains - an ideal spot for hungry eclipse eyes. Fred Espenak set up nearby with a battery of 18 telescopes and cameras in order to capture every phase of this fleeting event. I brought one setup for me and one for Marj, a scope with camera and a smaller 90mm refractor mounted on top for visual viewing.

The eclipse started nicely with crystal clear skies, but soon a series of thin clouds appeared on the horizon. And of course they drifted right over our site at totality, but thin enough to let us have a decent view of the corona. This is my 8th eclipse and every eclipse is different. The last 60 seconds the light level had an eerie sharpness, like an approaching thunderstorm. It was like dense twilight but without the colors of sunset. It was almost like a black&white movie.

In the last few seconds the light level dropped several magnitudes and the corona appeared as a pearly white glow. The entire eclipse was surrounded by faint reddish light from both the high level clouds and the smoke from forest fires several hundred miles to the west. The people around us were at first hushed and then burst out in applause and cheers.

What was supposed to be 2 1/2 minutes of eclipse was over in a flash - seemed like 30 seconds to me. Suddenly Baily's beads and the second Diamond ring appeared and last moment frantic images taken before it was all over. Within a few minutes a heavy cloud passed overhead and hid the sun in a thick haze for the following partials.

Emotions of sad, happy, wonder, and awe were followed by thoughts of the next eclipse.

Rolando


Diamond Ring has reddish color from thin clouds
https://www.astromart.com/common/image_popup.asp?image=/images/forums/835000-835999/835626.jpg&caption=

Mini-Diamond Ring Just before 2nd contact
https://www.astromart.com/common/image_popup.asp?image=/images/forums/835000-835999/835625.jpg&caption=

Mid eclipse corona with subtle colors from the clouds
https://www.astromart.com/common/image_popup.asp?image=/images/forums/835000-835999/835623.jpg&caption=

Closeup of the prominences
https://www.astromart.com/common/image_popup.asp?image=/images/forums/835000-835999/835624.jpg&caption=


Re: [ap-ug] Astrocon and Casper eclipse

Phillip Coker
 

Outstanding!!  The equipment looks pretty good, too.

Phillip

On Aug 29, 2017, at 15:03, chris1011@... [ap-gto] <ap-gto@...> wrote:

We also had Christine and my daughter Karen manning the AP booth at Astrocon and enjoying the eclipse on Monday. 

Three eclipse ladies from Astro-Physics, left to right Marj, Karen, Christine, after the eclipse in Casper. Marj operating the 130GTX refractor, Karen shot with a Canon digital camera setup and Christine holding the 11x70 binoculars. My 155 refractor setup on 1100 mount in the rear.

https://www.astromart.com/common/image_popup.asp?image=/images/forums/835000-835999/835638.jpg&caption=

Rolando




-----Original Message-----
From: chris1011@... [ap-ug] <ap-ug@...>
To: ap-gto <ap-gto@...>; ap-ug <ap-ug@...>
Sent: Tue, Aug 29, 2017 12:11 pm
Subject: [ap-ug] Astrocon and Casper eclipse



Some further thoughts on our eclipse trip.

Marj and I attended Astrocon in Casper the week before the eclipse. We had our booth set up and met lots of eclipse chasers who came out to hear talks by famous amateurs and professionals during the conference, and check out the latest amateur equipment. The highlight of the conference was the talk by Fred "Mr Eclipse" Espenak. He certainly got the crowd fired up and looking forward to the next morning.

Astrocon officials made available to us a spot at Casper College, up on a hill with sweeping views of the distant mountains - an ideal spot for hungry eclipse eyes. Fred Espenak set up nearby with a battery of 18 telescopes and cameras in order to capture every phase of this fleeting event. I brought one setup for me and one for Marj, a scope with camera and a smaller 90mm refractor mounted on top for visual viewing. 

The eclipse started nicely with crystal clear skies, but soon a series of thin clouds appeared on the horizon. And of course they drifted right over our site at totality, but thin enough to let us have a decent view of the corona. This is my 8th eclipse and every eclipse is different. The last 60 seconds the light level had an eerie sharpness, like an approaching thunderstorm. It was like dense twilight but without the colors of sunset. It was almost like a black&white movie. 

In the last few seconds the light level dropped several magnitudes and the corona appeared as a pearly white glow. The entire eclipse was surrounded by faint reddish light from both the high level clouds and the smoke from forest fires several hundred miles to the west. The people around us were at first hushed and then burst out in applause and cheers. 

What was supposed to be 2 1/2 minutes of eclipse was over in a flash - seemed like 30 seconds to me. Suddenly Baily's beads and the second Diamond ring appeared and last moment frantic images taken before it was all over. Within a few minutes a heavy cloud passed overhead and hid the sun in a thick haze for the following partials. 

Emotions of sad, happy, wonder, and awe were followed by thoughts of the next eclipse.  

Rolando


Diamond Ring has reddish  color from thin clouds
https://www.astromart.com/common/image_popup.asp?image=/images/forums/835000-835999/835626.jpg&caption=

Mini-Diamond Ring Just before 2nd contact
https://www.astromart.com/common/image_popup.asp?image=/images/forums/835000-835999/835625.jpg&caption=

Mid eclipse corona with subtle colors from the clouds
https://www.astromart.com/common/image_popup.asp?image=/images/forums/835000-835999/835623.jpg&caption=

Closeup of the prominences
https://www.astromart.com/common/image_popup.asp?image=/images/forums/835000-835999/835624.jpg&caption=
 




Re: [ap-ug] Astrocon and Casper eclipse

Robert Sinitiere <bobstar9@...>
 

Absolutely Beautiful images, what great teamwork!  Awe inspiring beauty!  Bob S.


On Aug 29, 2017, at 4:03 PM, "chris1011@... [ap-gto]" <ap-gto@...> wrote:

 

We also had Christine and my daughter Karen manning the AP booth at Astrocon and enjoying the eclipse on Monday.

Three eclipse ladies from Astro-Physics, left to right Marj, Karen, Christine, after the eclipse in Casper. Marj operating the 130GTX refractor, Karen shot with a Canon digital camera setup and Christine holding the 11x70 binoculars. My 155 refractor setup on 1100 mount in the rear.

https://www.astromart.com/common/image_popup.asp?image=/images/forums/835000-835999/835638.jpg&caption=

Rolando




-----Original Message-----
From: chris1011@... [ap-ug] <ap-ug@...>
To: ap-gto <ap-gto@...>; ap-ug <ap-ug@...>
Sent: Tue, Aug 29, 2017 12:11 pm
Subject: [ap-ug] Astrocon and Casper eclipse



Some further thoughts on our eclipse trip.

Marj and I attended Astrocon in Casper the week before the eclipse. We had our booth set up and met lots of eclipse chasers who came out to hear talks by famous amateurs and professionals during the conference, and check out the latest amateur equipment. The highlight of the conference was the talk by Fred "Mr Eclipse" Espenak. He certainly got the crowd fired up and looking forward to the next morning.

Astrocon officials made available to us a spot at Casper College, up on a hill with sweeping views of the distant mountains - an ideal spot for hungry eclipse eyes. Fred Espenak set up nearby with a battery of 18 telescopes and cameras in order to capture every phase of this fleeting event. I brought one setup for me and one for Marj, a scope with camera and a smaller 90mm refractor mounted on top for visual viewing.

The eclipse started nicely with crystal clear skies, but soon a series of thin clouds appeared on the horizon. And of course they drifted right over our site at totality, but thin enough to let us have a decent view of the corona. This is my 8th eclipse and every eclipse is different. The last 60 seconds the light level had an eerie sharpness, like an approaching thunderstorm. It was like dense twilight but without the colors of sunset. It was almost like a black&white movie.

In the last few seconds the light level dropped several magnitudes and the corona appeared as a pearly white glow. The entire eclipse was surrounded by faint reddish light from both the high level clouds and the smoke from forest fires several hundred miles to the west. The people around us were at first hushed and then burst out in applause and cheers.

What was supposed to be 2 1/2 minutes of eclipse was over in a flash - seemed like 30 seconds to me. Suddenly Baily's beads and the second Diamond ring appeared and last moment frantic images taken before it was all over. Within a few minutes a heavy cloud passed overhead and hid the sun in a thick haze for the following partials.

Emotions of sad, happy, wonder, and awe were followed by thoughts of the next eclipse.  

Rolando


Diamond Ring has reddish  color from thin clouds
https://www.astromart.com/common/image_popup.asp?image=/images/forums/835000-835999/835626.jpg&caption=

Mini-Diamond Ring Just before 2nd contact
https://www.astromart.com/common/image_popup.asp?image=/images/forums/835000-835999/835625.jpg&caption=

Mid eclipse corona with subtle colors from the clouds
https://www.astromart.com/common/image_popup.asp?image=/images/forums/835000-835999/835623.jpg&caption=

Closeup of the prominences
https://www.astromart.com/common/image_popup.asp?image=/images/forums/835000-835999/835624.jpg&caption=



Re: [ap-ug] Astrocon and Casper eclipse

Roland Christen
 

We also had Christine and my daughter Karen manning the AP booth at Astrocon and enjoying the eclipse on Monday.

Three eclipse ladies from Astro-Physics, left to right Marj, Karen, Christine, after the eclipse in Casper. Marj operating the 130GTX refractor, Karen shot with a Canon digital camera setup and Christine holding the 11x70 binoculars. My 155 refractor setup on 1100 mount in the rear.

https://www.astromart.com/common/image_popup.asp?image=/images/forums/835000-835999/835638.jpg&caption=

Rolando



-----Original Message-----
From: chris1011@... [ap-ug]
To: ap-gto ; ap-ug
Sent: Tue, Aug 29, 2017 12:11 pm
Subject: [ap-ug] Astrocon and Casper eclipse



Some further thoughts on our eclipse trip.

Marj and I attended Astrocon in Casper the week before the eclipse. We had our booth set up and met lots of eclipse chasers who came out to hear talks by famous amateurs and professionals during the conference, and check out the latest amateur equipment. The highlight of the conference was the talk by Fred "Mr Eclipse" Espenak. He certainly got the crowd fired up and looking forward to the next morning.

Astrocon officials made available to us a spot at Casper College, up on a hill with sweeping views of the distant mountains - an ideal spot for hungry eclipse eyes. Fred Espenak set up nearby with a battery of 18 telescopes and cameras in order to capture every phase of this fleeting event. I brought one setup for me and one for Marj, a scope with camera and a smaller 90mm refractor mounted on top for visual viewing.

The eclipse started nicely with crystal clear skies, but soon a series of thin clouds appeared on the horizon. And of course they drifted right over our site at totality, but thin enough to let us have a decent view of the corona. This is my 8th eclipse and every eclipse is different. The last 60 seconds the light level had an eerie sharpness, like an approaching thunderstorm. It was like dense twilight but without the colors of sunset. It was almost like a black&white movie.

In the last few seconds the light level dropped several magnitudes and the corona appeared as a pearly white glow. The entire eclipse was surrounded by faint reddish light from both the high level clouds and the smoke from forest fires several hundred miles to the west. The people around us were at first hushed and then burst out in applause and cheers.

What was supposed to be 2 1/2 minutes of eclipse was over in a flash - seemed like 30 seconds to me. Suddenly Baily's beads and the second Diamond ring appeared and last moment frantic images taken before it was all over. Within a few minutes a heavy cloud passed overhead and hid the sun in a thick haze for the following partials.

Emotions of sad, happy, wonder, and awe were followed by thoughts of the next eclipse.  

Rolando


Diamond Ring has reddish  color from thin clouds
https://www.astromart.com/common/image_popup.asp?image=/images/forums/835000-835999/835626.jpg&caption=

Mini-Diamond Ring Just before 2nd contact
https://www.astromart.com/common/image_popup.asp?image=/images/forums/835000-835999/835625.jpg&caption=

Mid eclipse corona with subtle colors from the clouds
https://www.astromart.com/common/image_popup.asp?image=/images/forums/835000-835999/835623.jpg&caption=

Closeup of the prominences
https://www.astromart.com/common/image_popup.asp?image=/images/forums/835000-835999/835624.jpg&caption=



Re: Eclipse shots taken by Marj

Antoine PAVLIN
 

Fantastic.

 

Congratulations Marj for these outstanding images.

 

Best regards

 

Antoine

 

De : ap-gto@... [mailto:ap-gto@...]
Envoyé : mardi 29 août 2017 03:49
À : ap-ug@...; ap-gto@...
Objet : [ap-gto] Eclipse shots taken by Marj

 

 

I don't have my film images back yet, but here are a few of the shots that Marj took with the 130GTX on the Mach1 mount. They are just quick processed from 8 bit Jpegs:

Diamond Ring has reddish  color from thin clouds
https://www.astromart.com/common/image_popup.asp?image=/images/forums/835000-835999/835626.jpg&caption=

Mini-Diamond Ring Just before 2nd contact
https://www.astromart.com/common/image_popup.asp?image=/images/forums/835000-835999/835625.jpg&caption=

Mid eclipse corona with subtle colors from the clouds
https://www.astromart.com/common/image_popup.asp?image=/images/forums/835000-835999/835623.jpg&caption=

Closeup of the prominences
https://www.astromart.com/common/image_popup.asp?image=/images/forums/835000-835999/835624.jpg&caption=

Rolando


Garanti sans virus. www.avast.com


Re: Astrocon and Casper eclipse

Lee
 

wonderful photos and nice description of the event.

lee


Astrocon and Casper eclipse

Roland Christen
 

Some further thoughts on our eclipse trip.

Marj and I attended Astrocon in Casper the week before the eclipse. We had our booth set up and met lots of eclipse chasers who came out to hear talks by famous amateurs and professionals during the conference, and check out the latest amateur equipment. The highlight of the conference was the talk by Fred "Mr Eclipse" Espenak. He certainly got the crowd fired up and looking forward to the next morning.

Astrocon officials made available to us a spot at Casper College, up on a hill with sweeping views of the distant mountains - an ideal spot for hungry eclipse eyes. Fred Espenak set up nearby with a battery of 18 telescopes and cameras in order to capture every phase of this fleeting event. I brought one setup for me and one for Marj, a scope with camera and a smaller 90mm refractor mounted on top for visual viewing.

The eclipse started nicely with crystal clear skies, but soon a series of thin clouds appeared on the horizon. And of course they drifted right over our site at totality, but thin enough to let us have a decent view of the corona. This is my 8th eclipse and every eclipse is different. The last 60 seconds the light level had an eerie sharpness, like an approaching thunderstorm. It was like dense twilight but without the colors of sunset. It was almost like a black&white movie.

In the last few seconds the light level dropped several magnitudes and the corona appeared as a pearly white glow. The entire eclipse was surrounded by faint reddish light from both the high level clouds and the smoke from forest fires several hundred miles to the west. The people around us were at first hushed and then burst out in applause and cheers.

What was supposed to be 2 1/2 minutes of eclipse was over in a flash - seemed like 30 seconds to me. Suddenly Baily's beads and the second Diamond ring appeared and last moment frantic images taken before it was all over. Within a few minutes a heavy cloud passed overhead and hid the sun in a thick haze for the following partials.

Emotions of sad, happy, wonder, and awe were followed by thoughts of the next eclipse.  

Rolando


Diamond Ring has reddish  color from thin clouds
https://www.astromart.com/common/image_popup.asp?image=/images/forums/835000-835999/835626.jpg&caption=

Mini-Diamond Ring Just before 2nd contact
https://www.astromart.com/common/image_popup.asp?image=/images/forums/835000-835999/835625.jpg&caption=

Mid eclipse corona with subtle colors from the clouds
https://www.astromart.com/common/image_popup.asp?image=/images/forums/835000-835999/835623.jpg&caption=

Closeup of the prominences
https://www.astromart.com/common/image_popup.asp?image=/images/forums/835000-835999/835624.jpg&caption=


Re: Eclipse shots taken by Marj

Phillip Coker
 

Beautiful!

On Aug 28, 2017, at 19:48, chris1011@... [ap-gto] <ap-gto@...> wrote:

I don't have my film images back yet, but here are a few of the shots that Marj took with the 130GTX on the Mach1 mount. They are just quick processed from 8 bit Jpegs:

Diamond Ring has reddish  color from thin clouds
https://www.astromart.com/common/image_popup.asp?image=/images/forums/835000-835999/835626.jpg&caption=

Mini-Diamond Ring Just before 2nd contact
https://www.astromart.com/common/image_popup.asp?image=/images/forums/835000-835999/835625.jpg&caption=

Mid eclipse corona with subtle colors from the clouds
https://www.astromart.com/common/image_popup.asp?image=/images/forums/835000-835999/835623.jpg&caption=

Closeup of the prominences
https://www.astromart.com/common/image_popup.asp?image=/images/forums/835000-835999/835624.jpg&caption=

Rolando



Re: APPC RA rate

Joe Zeglinski
 

Fantastic – as always Rolando
 
     ... You are constantly many steps ahead of everybody – not just the competition, but in what astronomers like us, would like, and would be even better for us,  before we even knew it. That’s what makes owning an AP mount or scope such a personal treasure.
 
    Looking forward to the new AP developments in Tracking methods ... among your many other surprises yet to come.
 
Joe
 

From: chris1011@... [ap-gto]
Sent: Monday, August 28, 2017 7:29 PM
To: ap-gto@...
Subject: Re: [ap-gto] APPC RA rate
 
Given what you say, then would it be theoretically possible – in some future CPx development – to “bump” the mount sidereal rate periodically while it is tracking normally?
Yes, you can do that now with any of the CP3 or CP4 controllers. We actually have tested software that automatically adjusts the tracking rate to the King rate, BUT we did not install it in our controllers because it requires that the mount be adjusted to a particular drift method. If the mount is adjusted to the normal drift method the King rate is useless and causes as much or more drift as the Sidereal rate. There is another better method that we are developing at this point which will allow unguided imaging of a deep sky object.

Rolando
 
 


Eclipse shots taken by Marj

Roland Christen
 

I don't have my film images back yet, but here are a few of the shots that Marj took with the 130GTX on the Mach1 mount. They are just quick processed from 8 bit Jpegs:

Diamond Ring has reddish  color from thin clouds
https://www.astromart.com/common/image_popup.asp?image=/images/forums/835000-835999/835626.jpg&caption=

Mini-Diamond Ring Just before 2nd contact
https://www.astromart.com/common/image_popup.asp?image=/images/forums/835000-835999/835625.jpg&caption=

Mid eclipse corona with subtle colors from the clouds
https://www.astromart.com/common/image_popup.asp?image=/images/forums/835000-835999/835623.jpg&caption=

Closeup of the prominences
https://www.astromart.com/common/image_popup.asp?image=/images/forums/835000-835999/835624.jpg&caption=

Rolando


Re: APPC RA rate

dave@...
 

Why not use appm and have it adjust the rates automatically depending on sky location? Or are you talking about having it adjust in the cp4 instead? in mount cp4 model perhapd?

Dave


Re: APPC RA rate

Roland Christen
 


Given what you say, then would it be theoretically possible – in some future CPx development – to “bump” the mount sidereal rate periodically while it is tracking normally?
Yes, you can do that now with any of the CP3 or CP4 controllers. We actually have tested software that automatically adjusts the tracking rate to the King rate, BUT we did not install it in our controllers because it requires that the mount be adjusted to a particular drift method. If the mount is adjusted to the normal drift method the King rate is useless and causes as much or more drift as the Sidereal rate. There is another better method that we are developing at this point which will allow unguided imaging of a deep sky object.

Rolando


-----Original Message-----
From: 'Joseph Zeglinski' J.Zeglinski@... [ap-gto]
To: ap-gto
Sent: Mon, Aug 28, 2017 6:22 pm
Subject: Re: [ap-gto] APPC RA rate



Rolando,
 
    Given what you say, then would it be theoretically possible – in some future CPx development – to “bump” the mount sidereal rate periodically while it is tracking normally?
 
    I’m thinking that the only time “atmospheric refracting is taken into account, is on a GOTO. Once there, perhaps an adjusted sidereal rate comes into effect. But as the target rises or sinks furthered away from zenith, the sidereal rate becomes very slightly inaccurate, until the next target slew.
 
    If that is true, then maybe there could be a regular periodic,  incremental tracking rate adjustment by the control programs. Perhaps that is done by mounts using the KING RATE. instead of sidereal.
Then again, you might also say it is an  insignificant difference, and matters little overall, especially as sky models and active guiding take care of this, in many cases. But it would be nice for the mount to tune into actual atmospheric compensated sidereal rate, on its own.
 
Joe
 
From: chris1011@... [ap-gto]
Sent: Monday, August 28, 2017 6:29 PM
To: ap-gto@...
Subject: Re: [ap-gto] APPC RA rate
 


You can make the RA drift either slower or faster by raising or lowering the altitude axis. There is a point where the drift rate at the zenith is exactly zero. The RA will of course drift slightly as you move away from the zenith in any direction, and this is caused by the well-known atmospheric refraction effect. Thus there is no one setting of RA tracking rate that works everywhere in the sky, but can work nicely within +- 1 to 2 hours from the zenith.

Rolando
 
 



Re: APPC RA rate

Joe Zeglinski
 

Rolando,
 
    Given what you say, then would it be theoretically possible – in some future CPx development – to “bump” the mount sidereal rate periodically while it is tracking normally?
 
    I’m thinking that the only time “atmospheric refracting is taken into account, is on a GOTO. Once there, perhaps an adjusted sidereal rate comes into effect. But as the target rises or sinks furthered away from zenith, the sidereal rate becomes very slightly inaccurate, until the next target slew.
 
    If that is true, then maybe there could be a regular periodic,  incremental tracking rate adjustment by the control programs. Perhaps that is done by mounts using the KING RATE. instead of sidereal.
Then again, you might also say it is an  insignificant difference, and matters little overall, especially as sky models and active guiding take care of this, in many cases. But it would be nice for the mount to tune into actual atmospheric compensated sidereal rate, on its own.
 
Joe
 

From: chris1011@... [ap-gto]
Sent: Monday, August 28, 2017 6:29 PM
To: ap-gto@...
Subject: Re: [ap-gto] APPC RA rate
 


You can make the RA drift either slower or faster by raising or lowering the altitude axis. There is a point where the drift rate at the zenith is exactly zero. The RA will of course drift slightly as you move away from the zenith in any direction, and this is caused by the well-known atmospheric refraction effect. Thus there is no one setting of RA tracking rate that works everywhere in the sky, but can work nicely within +- 1 to 2 hours from the zenith.

Rolando