Date   

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.
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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.

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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.

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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/ 
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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


Re: Why must DEC backlash be off in the ASCOM driver when guiding?

Tom Blahovici
 

Thanks. Full explanation.


Updating AP Ascom driver

Eduardo Oliveira
 

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


Re: Mach2 power consumption #Mach2GTO

Roland Christen
 

How come you are not using the 24 volt power supply that comes with the mount? It is much more efficient than your Pyramid.

Rolando



-----Original Message-----
From: Jerome Allison <jallison@...>
To: main@ap-gto.groups.io
Sent: Mon, May 25, 2020 3:02 pm
Subject: [ap-gto] Mach2 power consumption #Mach2GTO

I'm wondering what other Mach2 users are experiencing with power usage with their mounts.  

Using a Powerwerx watt meter, I'm seeing about 1.05 amps at 13.8V while tracking, as much as 5.15 amps while slewing.  I'm powering with a Pyramid PS-15KX supply, and it gets hot.  (Still indoors due to lousy weather).

These motors are drawing a lot of juice!  Is that to be expected?

Jerome


Re: Mach2 power consumption #Mach2GTO

Roland Christen
 

Yes, that is correct. The mount powers both microsteppers with full current at all times. The Dec motor must be powered even when it is not turning in order to maintain an exact microstep positions. This is fundamental to microstep motors. Slewing both motors at 1800x draws the most power - the motors are beefy and rated at 2.7 amps each.

The motors can be powered at a lower level, but then you may run into stalls and/or resonance situations. If this is something that you would like a handle on, we can incorporate that into our next keypad feature list. However, care must be taken to carefully balance the load so that the motors will work within their lowered load capability at the lower current levels. We can never achieve the low current consumption of our earlier DC servo motors because they have very much higher efficiency than a stepper motor. Also the Dec motor on a DC servo doesn't draw any current when it is sitting still, whereas a microstepper must draw full current whether it is moving or not in order to maintain sub-arcsec positions.

Rolando



-----Original Message-----
From: Jerome Allison <jallison@...>
To: main@ap-gto.groups.io
Sent: Mon, May 25, 2020 3:02 pm
Subject: [ap-gto] Mach2 power consumption #Mach2GTO

I'm wondering what other Mach2 users are experiencing with power usage with their mounts.  

Using a Powerwerx watt meter, I'm seeing about 1.05 amps at 13.8V while tracking, as much as 5.15 amps while slewing.  I'm powering with a Pyramid PS-15KX supply, and it gets hot.  (Still indoors due to lousy weather).

These motors are drawing a lot of juice!  Is that to be expected?

Jerome


Re: Mach2 and PHD2 Guiding recommendations

Don Anderson
 

Nice clean installation Dean!
Congrats

Don Anderson


On Tuesday, May 26, 2020, 07:51:42 a.m. MDT, Dean Jacobsen <deanjacobsen@...> wrote:


A profile snapshot of the Mach2 waiting for its first night under the stars.

https://www.astrobin.com/yqzal0/
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Dean Jacobsen
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Re: Mach2 transport case

George
 

Dean,

 

Bottom of page 4…Mach2 Optional Parts.    It is the Pelican iM2875 Storm Travel case.

 

Regards,

 

George

 

George Whitney

Astro-Physics, Inc.

Phone:  815-282-1513

Email:  george@...

 

From: main@ap-gto.groups.io [mailto:main@ap-gto.groups.io] On Behalf Of Dean Jacobsen
Sent: Tuesday, May 26, 2020 9:56 AM
To: main@ap-gto.groups.io
Subject: Re: [ap-gto] Mach2 transport case

 

Thanks but I haven't found it yet.  ;-)  I see the photo caption on page 2 that started me down this path but I haven't found the recommendation. 

Page number?
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Astrobin - https://www.astrobin.com/users/deanjacobsen/ 


Re: Mach2 transport case

Dean Jacobsen
 

Thanks but I haven't found it yet.  ;-)  I see the photo caption on page 2 that started me down this path but I haven't found the recommendation. 

Page number?
--
Dean Jacobsen
http://astrophoto.net/wp/ 
Image Gallery - http://astrophoto.net/wp/image-gallery/
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Re: Mach2 and PHD2 Guiding recommendations

Roland Christen
 

Excellent.

Rolando



-----Original Message-----
From: Dean Jacobsen <deanjacobsen@...>
To: main@ap-gto.groups.io
Sent: Sun, May 24, 2020 10:29 am
Subject: Re: [ap-gto] Mach2 and PHD2 Guiding recommendations

On Tue, May 19, 2020 at 10:33 AM, uncarollo2 <chris1011@...> wrote:
It's really quite simple.
 
1) Set a delay of 2 to 3 seconds between guide exposures. No need to chase gear errors because there aren't any.
2) use whatever exposure time you want to get a good signal/noise ratio (usually from 1 to 5 seconds)
3) use Guiding assistant to gauge the seeing and set your MinMove to what is recommended.
4) depending on seeing, the aggressiveness can be set between 50% to 90%.
 
Be sure that your guide scope focal length is set properly in PHD2 in the scope setup window.
 
Then image away.
 
Rolando
OK, the Mach2 arrived Friday and I took a trip out to the observatory last night. 

Had been able to update my ASCOM/AP Driver/PHD2/SGP software and driver stack.  TheSkyX connects.  APCC Pro was set up and functioning.

No modeling or other fancy stuff yet.

Here is a segment of guiding after the sequence completed and there weren't any dithers for a while.


 
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Dean Jacobsen
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