Jump to content

  •  

CNers have asked about a donation box for Cloudy Nights over the years, so here you go. Donation is not required by any means, so please enjoy your stay.

Photo

Software to slew the Dome along the slew of the Telescope?

  • Please log in to reply
8 replies to this topic

#1 Am33r

Am33r

    Mariner 2

  • *****
  • topic starter
  • Posts: 290
  • Joined: 03 Sep 2015

Posted 19 May 2021 - 04:07 PM

Hello.

 

I have a 3M ObservaDome and a 12" Meade LX200-ACF on a Pier and an X-Wedge.

In the Observatory, I have a Windows 10 Laptop with Wifi.

 

What software do I use to accomplish the following, and is there a particular hardware I need to purchase to do this?

 

I use the Meade AutoStar II hand controller to locate an object, and I click Go To, once the telescope finds the object and Locks on it to start tracking it, the DOME Rotates in accordance with the Telescope Ascension to allow the window to lock onto the object and tracks it as well (In reality, it keeps it open in front of the telescope).

 

Is THIS Good? anyone using it?

 

 

Thank you (=


Edited by Am33r, 19 May 2021 - 04:20 PM.


#2 Xplode

Xplode

    Vostok 1

  • -----
  • Posts: 137
  • Joined: 16 Nov 2011
  • Loc: Norway

Posted 19 May 2021 - 04:34 PM

If your dome already has a computer connection this should be pretty easy with the use of Ascom and for example Stellarium.
You will of course have to connect the mount to the pc too :)



#3 kathyastro

kathyastro

    Soyuz

  • *****
  • Posts: 3,637
  • Joined: 23 Dec 2016
  • Loc: Nova Scotia

Posted 19 May 2021 - 04:47 PM

I wrote a stand-alone application that does exactly this.  It requires ASCOM drivers for both the mount and the dome.

https://www.dropbox....ncV3.0.zip?dl=0

 

I don't think Stellarium has any awareness of domes or any ability to control them.


Edited by kathyastro, 19 May 2021 - 04:49 PM.

  • darksolstice, Am33r, ButterFly and 1 other like this

#4 Am33r

Am33r

    Mariner 2

  • *****
  • topic starter
  • Posts: 290
  • Joined: 03 Sep 2015

Posted 20 May 2021 - 04:13 PM

I wrote a stand-alone application that does exactly this.  It requires ASCOM drivers for both the mount and the dome.

https://www.dropbox....ncV3.0.zip?dl=0

 

I don't think Stellarium has any awareness of domes or any ability to control them.

That would be amazing!

 

What dome hardware are you personally running, and what scope mount?



#5 Am33r

Am33r

    Mariner 2

  • *****
  • topic starter
  • Posts: 290
  • Joined: 03 Sep 2015

Posted 20 May 2021 - 04:29 PM

If your dome already has a computer connection this should be pretty easy with the use of Ascom and for example Stellarium.
You will of course have to connect the mount to the pc too smile.gif

The dome stepper motor will need some sort of computerized board of course to command the motor to rotate.

 

This port has to have an ASCOM port, or a USB Port, or a RJ22 RJ-22 4P4C Port.

 

Then stelarium or - whatever - will treat it as if it were a mount and command it to rotate.

 

But does stelarium have a plugin to only control Ascension rotation from say a defined Home position? seeing how the dome doesn't need Declination control and cannot tilt up and down like a mount does.

 

Also, if I want to use the AutoStar II bandbox on the meade not Stelarium, then what?

Ideally, I would rather use my Sky Safari over wifi (I have the STELLA Module) to rotate both the Scope and the dome simultaneously.


Edited by Am33r, 20 May 2021 - 04:30 PM.


#6 kathyastro

kathyastro

    Soyuz

  • *****
  • Posts: 3,637
  • Joined: 23 Dec 2016
  • Loc: Nova Scotia

Posted 20 May 2021 - 04:52 PM

What dome hardware are you personally running, and what scope mount?

 

My dome is an Exploradome.  The dome controller is an Arduino that I programmed myself, and for which I wrote an ASCOM driver.  My mount is an iOptron CEM-60. 

 

The dome control software that I linked to (see post #3) will control any ASCOM dome, based on the position of any ASCOM mount.

 

The dome stepper motor will need some sort of computerized board of course to command the motor to rotate.

 

This port has to have an ASCOM port, or a USB Port, or a RJ22 RJ-22 4P4C Port.

 

Then stelarium or - whatever - will treat it as if it were a mount and command it to rotate.

 

But does stelarium have a plugin to only control Ascension rotation from say a defined Home position? seeing how the dome doesn't need Declination control and cannot tilt up and down like a mount does.

 

Also, if I want to use the AutoStar II bandbox on the meade not Stelarium, then what?

Ideally, I would rather use my Sky Safari over wifi (I have the STELLA Module) to rotate both the Scope and the dome simultaneously.

Stellarium will not treat a dome as a mount.  It has never heard of domes, and does not know what to do with one. 

 

Treating a dome as if it were a mount, even if it were possible, will not do you any good.  Perhaps with your wedged fork mount, the azimuth of the dome might be somewhat similar to the azimuth of the mount, but unless your mount is positioned so that the intersection of the RA and dec axes is exactly at the dome centre, that may not be close enough for the scope to see out of the opening.  Certainly on a GEM, the dome azimuth is seldom even close to the mount azimuth.  So slewing the dome as if it were a mount is of no use.

 

You need an application that will do the fairly complex three-dimensional vector calculations to determine what dome azimuth matches the current mount azimuth.  That is what my DomeSync application does.  Most session control software, like SGP or NINA, will also do those calculations.

 

One advantage of my DomeSync app is that, being a stand-alone application, it will match the dome azimuth to the mount even when using the hand controller to slew the mount.


Edited by kathyastro, 20 May 2021 - 04:54 PM.

  • DuncanM and Am33r like this

#7 Am33r

Am33r

    Mariner 2

  • *****
  • topic starter
  • Posts: 290
  • Joined: 03 Sep 2015

Posted 20 May 2021 - 05:14 PM

My dome is an Exploradome.  The dome controller is an Arduino that I programmed myself, and for which I wrote an ASCOM driver.  My mount is an iOptron CEM-60. 

 

The dome control software that I linked to (see post #3) will control any ASCOM dome, based on the position of any ASCOM mount.

My Hero (=

 

I want to use an R-Pi (newest model) or the newest Arduino for the dome, and yes my Meade has a fork mount.

The Pier won't be at the exact center of the dome, true, also on an equatorial setup the resulting azimuth has to be recalculated in 3D space. so Yes, Stelarium isn't specific in that regard as you wrote.

 

I'm going to message you if it's ok by you. I am from California. is that okay?


Edited by Am33r, 20 May 2021 - 05:15 PM.


#8 kathyastro

kathyastro

    Soyuz

  • *****
  • Posts: 3,637
  • Joined: 23 Dec 2016
  • Loc: Nova Scotia

Posted 20 May 2021 - 05:40 PM

I am from California. is that okay?

I don't mind Californians! lol.gif  (I don't mind messages, either.) 


Edited by kathyastro, 20 May 2021 - 05:41 PM.


#9 gundark

gundark

    Viking 1

  • *****
  • Posts: 602
  • Joined: 07 Jun 2015
  • Loc: Southern California

Posted 21 May 2021 - 09:42 AM

I am from California. is that okay?

funnypost.gif




CNers have asked about a donation box for Cloudy Nights over the years, so here you go. Donation is not required by any means, so please enjoy your stay.


Recent Topics






Cloudy Nights LLC
Cloudy Nights Sponsor: Astronomics