Date   

Re: pointing Polaris

Worsel
 

Peter

As Dale points out, Polaris is not exactly at 90.00 degrees.

For visual and crude navigational purposes, Polaris proximity to the NCP (<0.75 degrees) is good enough

and if any of us are around in 12000 years, we could use Vega as the "North Star" although it will not be as close as Polaris is today.

Bryan


Using Astrophotography Tool to capture images and drive 900GTO but the Meridian Delay is not working for some reason

Kevin Boucher
 

Anyway I am driving the mount via a GOTO command from APT (Astrophotography Tool) and the mount seems to completely ignore the Meridian delay setting. I use that extensively to get the most imaging out of my night without worries of cameras hitting the pier. I checked the Setup-> "Time & season setting" and it is correct. Not sure what else to look for. I have a CP3 controller with Q firmware version as I remember. I have also tried parking mount and then moving it to around the Park 3 configuration before issuing the GOTO command from APT with no luck as I remember there was an issue starting from Park 1 position as I know not really supported but works best for my Obs setup.
 
Appreciate any ideas you an offer...


Re: pointing Polaris

Dale Ghent
 

Polaris does not sit directly on the north celestial pole. It's J2000 declination is 89 16' 05". If it were exactly on the NCP, it would be at 90.0 degrees. Even if it was exactly on the NCP right now, it wouldn't be there for long due to precession.

So, yes, Polaris and other circumpolar objects can cause the mount to go upside down and even do a west -> east meridian flip if the object is "under" the NCP.

On May 27, 2020, at 10:53 AM, Peter Bresler via groups.io <PABresler=aol.com@groups.io> wrote:

I thought Polaris did not move at all, and its angle corresponds to your latitude? It stays at the same place day or night. Everything rotates around it.


Re: pointing Polaris

Peter Bresler
 

I thought Polaris did not move at all, and its angle corresponds to your latitude?  It stays at the same place day or night. Everything rotates around it.


Re: Error message in APCC with sync command in TheSkyX Pro #APCC

Juergen Riedmeier
 

Hi Ray,

based on your info and the help of an astro friend,
the problem could be solved.
What you have already pointed out and also described on the Astro-Physics website, in the depths of Win10, the comma " , " had to be changed to a point " . "
Now the sync command works with APCC.
Thank you for your help.
many Greetings
Jürgen


Re: pointing Polaris

Peter Bresler
 

Because of the height of my pier Polaris is at a fairly good angle to reach the secondary mirror. I used Merak.


Re: USB / Serial and WIFI connection #Mach2GTO

Roland Christen
 


is therefore is it possible to have active at the same time, a USB / Serie connection on the PC and a connection by WIFI on the smartphone?
Yes, certainly.

Rolando


-----Original Message-----
From: Dominique Durand via groups.io <dom33.durand@...>
To: main@ap-gto.groups.io
Sent: Tue, May 26, 2020 5:28 pm
Subject: [ap-gto] USB / Serial and WIFI connection #Mach2GTO

Hello,
I had a Mach1 GTOCP4 for 1 year and I used it in my observatory. I happened to use the WIFI connection to do positioning with Skysafari, but I did not if at the same time I had the USB / Serie connection active with the connection on my PC and APPC open.With my new Mach2 and the GTOCP5, I already connected by WIFI with Skysafari, but since with the connection to the PC (during the photo sessions) I noticed that the access point was not active so invisible in the network WIFI whether from PC or smartphone, however it appears when APPC is disconnected from the mount.It seems to me to have understood that the USB / Serie connection could be done by a virtual port. True or false? This allows to connect to the GTOCP5 in another way (except keyboard) and therefore can be by WIFI.The question is therefore is it possible to have active at the same time, a USB / Serie connection on the PC and a connection by WIFI on the smartphone?

Thanks

Dominique


USB / Serial and WIFI connection #Mach2GTO

Dominique Durand
 
Edited

Hello,
I had a Mach1 GTOCP4 for 1 year and I used it in my observatory. I happened to use the WIFI connection to do positioning with Skysafari, but I did not if at the same time I had the USB / Serie connection active with the connection on my PC and APPC open.With my new Mach2 and the GTOCP5, I already connected by WIFI with Skysafari, but since with the connection to the PC (during the photo sessions) I noticed that the access point was not active so invisible in the network WIFI whether from PC or smartphone, however it appears when APPC is disconnected from the mount.It seems to me to have understood that the USB / Serie connection could be done by a virtual port. True or false? This allows to connect to the GTOCP5 in another way (except keypad) and therefore can be by WIFI.The question is therefore is it possible to have active at the same time, a USB / Serie connection on the PC and a connection by WIFI on the smartphone?

Thanks

Dominique


Re: Updating AP Ascom driver

Eduardo Oliveira
 

Thank you!!

Eduardo

Livre de vírus. www.avast.com.


Re: Mach2 power consumption #Mach2GTO

Dean Jacobsen
 

Excellent.  I will just keep doing what I have been doing then.  Slews at 600x have always been good enough for me.
--
Dean Jacobsen
http://astrophoto.net/wp/ 
Image Gallery - http://astrophoto.net/wp/image-gallery/
Astrobin - https://www.astrobin.com/users/deanjacobsen/ 


Re: Mach2 power consumption #Mach2GTO

Roland Christen
 

The mount will not stall at 12 volts. It has the same capability as it has at 24 volts. except it won't slew as fast.

Rolando



-----Original Message-----
From: Dean Jacobsen <deanjacobsen@...>
To: main@ap-gto.groups.io
Sent: Tue, May 26, 2020 1:41 pm
Subject: Re: [ap-gto] Mach2 power consumption #Mach2GTO

Thanks Roland.

the part in your previous post about "stalls and/or resonance situations" got me thinking that I should run the mount at 24 volts instead of the 13.6 volts that I have the power supply set to.  Power efficiency is not really a concern while the mains are on and the standby battery is a large capacity battery which would actually run my AP900, camera, laptop, etc. for two nights.  So I can afford to be inefficient with an inverter if it means that I am avoiding the possibility of stalls and/or resonance situations.

--
Dean Jacobsen
http://astrophoto.net/wp/ 
Image Gallery - http://astrophoto.net/wp/image-gallery/
Astrobin - https://www.astrobin.com/users/deanjacobsen/ 


Re: Mach2 power consumption #Mach2GTO

Dean Jacobsen
 

Thanks Roland.

the part in your previous post about "stalls and/or resonance situations" got me thinking that I should run the mount at 24 volts instead of the 13.6 volts that I have the power supply set to.  Power efficiency is not really a concern while the mains are on and the standby battery is a large capacity battery which would actually run my AP900, camera, laptop, etc. for two nights.  So I can afford to be inefficient with an inverter if it means that I am avoiding the possibility of stalls and/or resonance situations.

--
Dean Jacobsen
http://astrophoto.net/wp/ 
Image Gallery - http://astrophoto.net/wp/image-gallery/
Astrobin - https://www.astrobin.com/users/deanjacobsen/ 


Re: pointing Polaris

Roland Christen
 

Depending on time of day, Polaris can be underneath the mount with counterweights straight up.

Rolando



-----Original Message-----
From: Peter Bresler via groups.io <PABresler@...>
To: main@ap-gto.groups.io
Sent: Tue, May 26, 2020 12:16 pm
Subject: [ap-gto] pointing Polaris

I was trying to point at Polaris with my Mach1 to collimate my scope. I put the coordinates in SGP and the mount did crazy stuff...counterweight up, and got out of sync. How do you do that?


Re: pointing Polaris

Mike Dodd
 

On 5/26/2020 1:16 PM, Peter Bresler via groups.io wrote:
I was trying to point at Polaris with my Mach1 to collimate my scope. I
put the coordinates in SGP and the mount did crazy stuff...counterweight
up, and got out of sync. How do you do that?
Why did you choose Polaris to collimate your scope? There are hundreds of other stars you could use instead.

--- Mike


Re: pointing Polaris

Frank Widmann
 

A go to is not the same as an alt/az pointing that you would use to line up a polar scope in the center of the RA axis on a mount. In a go to the Declination of Polaris is 89 degrees 20 minutes, so the declination axis is rotated to move the scope so that it’s within 8 minutes of being aligned with the RA axis of the mount, essentially pointing north. The rotational position of the RA axis is determined by angular distance (hour angle) of the target from the current meridian. The RA axis is rotated to move the scope the angular distance equal to the hour angle. If Polaris is currently over 90 degrees from the current meridian, you will be in a counterweights up position. Don’t try this at home. It can cause a pier collision.

Frank

On May 26, 2020, at 10:17 AM, Peter Bresler via groups.io <PABresler@...> wrote:

I was trying to point at Polaris with my Mach1 to collimate my scope. I put the coordinates in SGP and the mount did crazy stuff...counterweight up, and got out of sync. How do you do that?


Re: Updating AP Ascom driver

Geert
 

Eduardo, just run the installer, the driver settings will be kept but it does no harm to check after installation.
As for the settings of the computer for the notation of numbers, in Europe mainly "," is used but this has to be changed to use "." as the decimal divider.  If "." is used as a decimal divider notation on your PC, you are OK.  To change the decimal notation (as I have to do to use AP Ascom driver and APCC) you do this in the configuration screen if needed.

Geert Vandenbulcke
Belgium

Op di 26 mei 2020 om 17:43 schreef Eduardo Oliveira <eoliveira@...>:

Hi There,

Can someone please give me instructions on how to update the AP ASCOM driver? If I update the driver, the configurations are kept? I heard someone saying something about a language setting issue with “.” or “,”. Can someone give me some directions?

Regards


pointing Polaris

Peter Bresler
 

I was trying to point at Polaris with my Mach1 to collimate my scope. I put the coordinates in SGP and the mount did crazy stuff...counterweight up, and got out of sync. How do you do that?


Re: Mach2 power consumption #Mach2GTO

Roland Christen
 

No need for the inverter unless you want to run the mount at 24 volts. Using an inverter wastes power, better to run at 12 volts directly. The mount is most efficient at 12 volts. Without the keypad plugged in it consumes about 14 watts at 12v, 15 watts at 18 volts and 16.6 watts at 24 volts. It is limited to 1200x slewing at 12 volts and 1800x above 18 volts.

Rolando



-----Original Message-----
From: Dean Jacobsen <deanjacobsen@...>
To: main@ap-gto.groups.io
Sent: Tue, May 26, 2020 11:20 am
Subject: Re: [ap-gto] Mach2 power consumption #Mach2GTO

Ok, now that raises a question for me.

While we do have 120V power at the observatory, it is unreliable [rural location, the utility sometimes shuts it off to prevent brush fires, a club member may not realize that I am on site and will shut down the sit power when they leave at 2am].  So, I have everything set up to run on 12v and if the power is interrupted, then everything immediately switches over to a 12v LiPO4 battery that is on standby [ http://www.westmountainradio.com/product_info.php?products_id=epic-pwrgate ].

It looks like I should be using a 12v to 120v inverter for the mount with the supplied 24v power supply plugged in... right?
--
Dean Jacobsen
http://astrophoto.net/wp/ 
Image Gallery - http://astrophoto.net/wp/image-gallery/
Astrobin - https://www.astrobin.com/users/deanjacobsen/ 


Re: Mach2 power consumption #Mach2GTO

Dean Jacobsen
 

Ok, now that raises a question for me.

While we do have 120V power at the observatory, it is unreliable [rural location, the utility sometimes shuts it off to prevent brush fires, a club member may not realize that I am on site and will shut down the sit power when they leave at 2am].  So, I have everything set up to run on 12v and if the power is interrupted, then everything immediately switches over to a 12v LiPO4 battery that is on standby [ http://www.westmountainradio.com/product_info.php?products_id=epic-pwrgate ].

It looks like I should be using a 12v to 120v inverter for the mount with the supplied 24v power supply plugged in... right?
--
Dean Jacobsen
http://astrophoto.net/wp/ 
Image Gallery - http://astrophoto.net/wp/image-gallery/
Astrobin - https://www.astrobin.com/users/deanjacobsen/ 


Re: Create a PEM curve with a camera?

Tom Blahovici
 

Hi . Does this mean that if I use an stl11000 that gives 3.6" that I should not bother?
Tom

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