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Nexstar 90 mm f/10 refractor



 
 
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  #11  
Old November 25th 18, 12:53 AM posted to sci.astro.amateur
RichA[_6_]
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Default Nexstar 90 mm f/10 refractor

On Saturday, 24 November 2018 16:52:11 UTC-5, palsing wrote:
On Saturday, November 24, 2018 at 7:16:22 AM UTC-8, StarDust wrote:

Most mount don't have sat. tracking built in, it has to be hooked up to a PC and software does the trick!


My 25" dob is equipped with ServoCat and Argo Navis and can track satellites without needing a computer... but the AN *is* a computer, of sorts. From the manual...

"Argo Navisâ„¢ has a powerful 32 bit CPU at its heart that will guide you continuously to keep track of satellites. The sophisticated software even accounts for precession and atmospheric refraction."


Wonder if anyone ever got knocked off their ladder using a big Dob to track satellites?
  #12  
Old November 25th 18, 12:58 AM posted to sci.astro.amateur
palsing[_2_]
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Posts: 3,068
Default Nexstar 90 mm f/10 refractor

On Saturday, November 24, 2018 at 3:53:27 PM UTC-8, RichA wrote:
On Saturday, 24 November 2018 16:52:11 UTC-5, palsing wrote:
On Saturday, November 24, 2018 at 7:16:22 AM UTC-8, StarDust wrote:

Most mount don't have sat. tracking built in, it has to be hooked up to a PC and software does the trick!


My 25" dob is equipped with ServoCat and Argo Navis and can track satellites without needing a computer... but the AN *is* a computer, of sorts. From the manual...

"Argo Navisâ„¢ has a powerful 32 bit CPU at its heart that will guide you continuously to keep track of satellites. The sophisticated software even accounts for precession and atmospheric refraction."


Wonder if anyone ever got knocked off their ladder using a big Dob to track satellites?


It is folly to even try to track a satellite while on the ladder of a big dob. It is hard enough to track a satellite that is low enough to have both feet on the ground. The eyepiece on my dob is about 8 feet from the azimuth pivot, so it moves pretty quickly!
  #13  
Old November 25th 18, 01:00 AM posted to sci.astro.amateur
StarDust
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Default Nexstar 90 mm f/10 refractor

On Saturday, November 24, 2018 at 3:53:27 PM UTC-8, RichA wrote:
On Saturday, 24 November 2018 16:52:11 UTC-5, palsing wrote:
On Saturday, November 24, 2018 at 7:16:22 AM UTC-8, StarDust wrote:

Most mount don't have sat. tracking built in, it has to be hooked up to a PC and software does the trick!


My 25" dob is equipped with ServoCat and Argo Navis and can track satellites without needing a computer... but the AN *is* a computer, of sorts. From the manual...

"Argo Navisâ„¢ has a powerful 32 bit CPU at its heart that will guide you continuously to keep track of satellites. The sophisticated software even accounts for precession and atmospheric refraction."


Wonder if anyone ever got knocked off their ladder using a big Dob to track satellites?


hahaha!!!!
  #14  
Old November 25th 18, 01:03 AM posted to sci.astro.amateur
StarDust
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Posts: 732
Default Nexstar 90 mm f/10 refractor

On Saturday, November 24, 2018 at 3:58:54 PM UTC-8, palsing wrote:
On Saturday, November 24, 2018 at 3:53:27 PM UTC-8, RichA wrote:
On Saturday, 24 November 2018 16:52:11 UTC-5, palsing wrote:
On Saturday, November 24, 2018 at 7:16:22 AM UTC-8, StarDust wrote:

Most mount don't have sat. tracking built in, it has to be hooked up to a PC and software does the trick!

My 25" dob is equipped with ServoCat and Argo Navis and can track satellites without needing a computer... but the AN *is* a computer, of sorts. From the manual...

"Argo Navisâ„¢ has a powerful 32 bit CPU at its heart that will guide you continuously to keep track of satellites. The sophisticated software even accounts for precession and atmospheric refraction."


Wonder if anyone ever got knocked off their ladder using a big Dob to track satellites?


It is folly to even try to track a satellite while on the ladder of a big dob. It is hard enough to track a satellite that is low enough to have both feet on the ground. The eyepiece on my dob is about 8 feet from the azimuth pivot, so it moves pretty quickly!


Built for giant people!
A view to kill!
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  #15  
Old November 25th 18, 10:04 AM posted to sci.astro.amateur
Paul Schlyter[_3_]
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Default Nexstar 90 mm f/10 refractor

On Sat, 24 Nov 2018 13:52:08 -0800 (PST), palsing
wrote:
My 25" dob is equipped with ServoCat and Argo Navis and can track

satellites
without needing a computer...


So how do you figure out the tracking rates in alt and az? By pencil
and paper?
That would indeed be a genuine Dobsonian tradition...
  #16  
Old November 25th 18, 03:35 PM posted to sci.astro.amateur
Chris L Peterson
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Posts: 10,007
Default Nexstar 90 mm f/10 refractor

On Sun, 25 Nov 2018 10:04:07 +0100, Paul Schlyter
wrote:

On Sat, 24 Nov 2018 13:52:08 -0800 (PST), palsing
wrote:
My 25" dob is equipped with ServoCat and Argo Navis and can track

satellites
without needing a computer...


So how do you figure out the tracking rates in alt and az? By pencil
and paper?
That would indeed be a genuine Dobsonian tradition...


Every goto mount controller, every hand controller that is anything
more than four buttons, has a computer in it. As does the system
controlling his dob. He just means that he doesn't require an
_external_ computer to manage satellite tracking.
  #17  
Old November 25th 18, 11:53 PM posted to sci.astro.amateur
palsing[_2_]
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Posts: 3,068
Default Nexstar 90 mm f/10 refractor

On Sunday, November 25, 2018 at 6:35:05 AM UTC-8, Chris L Peterson wrote:
On Sun, 25 Nov 2018 10:04:07 +0100, Paul Schlyter
wrote:

On Sat, 24 Nov 2018 13:52:08 -0800 (PST), palsing
wrote:
My 25" dob is equipped with ServoCat and Argo Navis and can track

satellites
without needing a computer...


So how do you figure out the tracking rates in alt and az? By pencil
and paper?
That would indeed be a genuine Dobsonian tradition...


Every goto mount controller, every hand controller that is anything
more than four buttons, has a computer in it. As does the system
controlling his dob. He just means that he doesn't require an
_external_ computer to manage satellite tracking.


Yes, exactly, no laptop needed...
  #18  
Old November 26th 18, 04:30 PM posted to sci.astro.amateur
Paul Schlyter[_3_]
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Posts: 1,344
Default Nexstar 90 mm f/10 refractor

On Sun, 25 Nov 2018 07:35:01 -0700, Chris L Peterson
wrote:
On Sun, 25 Nov 2018 10:04:07 +0100, Paul Schlyter
wrote:


On Sat, 24 Nov 2018 13:52:08 -0800 (PST), palsing
wrote:
My 25" dob is equipped with ServoCat and Argo Navis and can

track
satellites
without needing a computer...


So how do you figure out the tracking rates in alt and az? By

pencil
and paper?
That would indeed be a genuine Dobsonian tradition...


Every goto mount controller, every hand controller that is anything
more than four buttons, has a computer in it. As does the system
controlling his dob. He just means that he doesn't require an
_external_ computer to manage satellite tracking.


A computer without a computer... :-)

And finding something which really is without a computer is getting
increasingly hard...
  #19  
Old November 26th 18, 11:53 PM posted to sci.astro.amateur
StarDust
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Posts: 732
Default Nexstar 90 mm f/10 refractor

On Monday, November 26, 2018 at 7:30:08 AM UTC-8, Paul Schlyter wrote:

My 25" dob is equipped with ServoCat and Argo Navis and can

track
satellites
without needing a computer...

So how do you figure out the tracking rates in alt and az? By

pencil
and paper?
That would indeed be a genuine Dobsonian tradition...


Every goto mount controller, every hand controller that is anything
more than four buttons, has a computer in it. As does the system
controlling his dob. He just means that he doesn't require an
_external_ computer to manage satellite tracking.


A computer without a computer... :-)

And finding something which really is without a computer is getting
increasingly hard...


NexStar hand controller don't have internal battery or GPS. Every time it plugged in, time/date has to be entered or location if changed.
Far as I know, if used for tracking from external software and PC , it tracks in leapfrog mode, not continuous.
Interesting article about how to convert it for continuous tracking, using ardunio!
https://sites.google.com/site/wayneh...-mount-control
 




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