Date   

Re: Dec limit in Mach2

Roland Christen
 

Hello Luca,

Do you use SkyX?

Rolando



-----Original Message-----
From: Luca Marinelli <photo@...>
To: main@ap-gto.groups.io
Sent: Thu, Feb 4, 2021 4:09 pm
Subject: Re: [ap-gto] Dec limit in Mach2

The Dec limit problem continues. I had the mount in Park 3 position. I powered on the mount and started APCC. As soon as I clicked the connect button, APCC gave a Fault Triggered:South Limit error and ALT/Az position shows that the mount rotated in Dec all the way around. I just went outside to check in the observatory and that's exactly how i found the mount.

Why is the mount slewing on its own until it hits the Dec limit after it connects to APCC Pro? How can I stop this behavior?

Thanks,

Luca

--
Roland Christen
Astro-Physics


Re: Selling an AP Mount, what is the procedure in AP?

Karen Christen
 

Hello Marcello,

 

Once the sale is complete the new owner should contact us so we can update our records.  It’s also really nice if the seller (you) lets us know it was a legitimate sale.  It’s very rare, but AP equipment does get stolen. 

Karen

AP

 

From: main@ap-gto.groups.io <main@ap-gto.groups.io> On Behalf Of Marcelo Figueroa via groups.io
Sent: Thursday, February 4, 2021 5:39 PM
To: main@ap-gto.groups.io
Subject: [ap-gto] Selling an AP Mount, what is the procedure in AP?

 

I am selling my Mach1, which is registered in AP at my name, what do I and the new owner have to do to update that registration for future support?

 

Thank you,

 


--
Karen Christen
Astro-Physics


Selling an AP Mount, what is the procedure in AP?

Marcelo Figueroa
 

I am selling my Mach1, which is registered in AP at my name, what do I and the new owner have to do to update that registration for future support?
 
Thank you,
 


Re: Remote power on/off via USB relay Arduino CH340. Maybe add it to APCC?

M. Collins
 

On Thu, Feb 4, 2021 at 02:10 PM, Micheal Fields Jr wrote:
Looking for a way to restart the mount I ventured onto Amazon and found this little USB relay device https://www.amazon.com/gp/product/B01CN7E0RQ
  Yikes! Up to 250 VAC on the relay pins and no housing? That's a potentially lethal hazard just waiting for someone to grab as though it were any other USB device.

  Use with extreme caution.


Re: Mach1 Park 3 curiosity

Roland Christen
 


Whenever you do mount sync you shift both axes from the star point
That should say start point.

Rolando


-----Original Message-----
From: Roland Christen via groups.io <chris1011@...>
To: main@ap-gto.groups.io <main@ap-gto.groups.io>
Sent: Thu, Feb 4, 2021 4:52 pm
Subject: Re: [ap-gto] Mach1 Park 3 curiosity


What does this mean?
Whenever you do mount sync you shift both axes from the star point and establish a new start point according to the time that is entered into your mount at initialization. For every second of time error the mount will change the RA angle by 15 arc seconds. For every hour of error you get 15 degrees of offset. From your images it looks like your controlling software (keypad or whatever you use for initialization) has a time error of a few minutes for your location. Remember, local time in a time zone is not very accurate. Next time you do this sequence, change the time in the mount by +- 5 minutes and then park. Watch what happens to the RA position.

Bottom line, don't worry about the exact park position when parking the mount. When re-initializing, simply use Autostart YES in the keypad, and it will go to the correct place in the sky. Don't "Resume from Park3". If you are not using the keypad, then "Resume from Present position" in your software.

Rolando


-----Original Message-----
From: Nick Iversen <inoddy@...>
To: main@ap-gto.groups.io
Sent: Thu, Feb 4, 2021 4:13 pm
Subject: [ap-gto] Mach1 Park 3 curiosity

This isn't a problem but I'm curious about what is going on here. I do a polar alignment (1 arc min accuracy according to PHD2) then unpark from Park 3 as shown in the photo at left. I do a night's observing using plate solving and mount synching in Sequence Generator Pro. Then at the end of the session I park to position 3 and the mount goes to the position in the second photo. It doesn't line up. The angular distance is quite large.

What does this mean? Why doesn't it go back to where it started? The real question is - for the next night should I start from this position? Is this my true Park 3?



--
Roland Christen
Astro-Physics

--
Roland Christen
Astro-Physics


Re: Mach1 Park 3 curiosity

Roland Christen
 


What does this mean?
Whenever you do mount sync you shift both axes from the star point and establish a new start point according to the time that is entered into your mount at initialization. For every second of time error the mount will change the RA angle by 15 arc seconds. For every hour of error you get 15 degrees of offset. From your images it looks like your controlling software (keypad or whatever you use for initialization) has a time error of a few minutes for your location. Remember, local time in a time zone is not very accurate. Next time you do this sequence, change the time in the mount by +- 5 minutes and then park. Watch what happens to the RA position.

Bottom line, don't worry about the exact park position when parking the mount. When re-initializing, simply use Autostart YES in the keypad, and it will go to the correct place in the sky. Don't "Resume from Park3". If you are not using the keypad, then "Resume from Present position" in your software.

Rolando


-----Original Message-----
From: Nick Iversen <inoddy@...>
To: main@ap-gto.groups.io
Sent: Thu, Feb 4, 2021 4:13 pm
Subject: [ap-gto] Mach1 Park 3 curiosity

This isn't a problem but I'm curious about what is going on here. I do a polar alignment (1 arc min accuracy according to PHD2) then unpark from Park 3 as shown in the photo at left. I do a night's observing using plate solving and mount synching in Sequence Generator Pro. Then at the end of the session I park to position 3 and the mount goes to the position in the second photo. It doesn't line up. The angular distance is quite large.

What does this mean? Why doesn't it go back to where it started? The real question is - for the next night should I start from this position? Is this my true Park 3?



--
Roland Christen
Astro-Physics


Mach1 Park 3 curiosity

Nick Iversen
 

This isn't a problem but I'm curious about what is going on here. I do a polar alignment (1 arc min accuracy according to PHD2) then unpark from Park 3 as shown in the photo at left. I do a night's observing using plate solving and mount synching in Sequence Generator Pro. Then at the end of the session I park to position 3 and the mount goes to the position in the second photo. It doesn't line up. The angular distance is quite large.

What does this mean? Why doesn't it go back to where it started? The real question is - for the next night should I start from this position? Is this my true Park 3?



Re: Mount Maintenance

Karen Christen
 

We love doing business with you, as well, Cap’n.  😉

Karen

AP

 

From: main@ap-gto.groups.io <main@ap-gto.groups.io> On Behalf Of CaptMax
Sent: Thursday, February 4, 2021 3:54 PM
To: main@ap-gto.groups.io
Subject: Re: [ap-gto] Mount Maintenance

 

AP sells a grease kit for their mounts. This comes with everything you need including a brush. There is plenty of extra to apply a thin layer to the mating surfaces between the DEC and RA on a 1200GTO Mount. I just purchased a kit myself. I love doing business with AP. 
CaptMax 


--
Karen Christen
Astro-Physics


Re: Dec limit in Mach2

Luca Marinelli
 

The Dec limit problem continues. I had the mount in Park 3 position. I powered on the mount and started APCC. As soon as I clicked the connect button, APCC gave a Fault Triggered:South Limit error and ALT/Az position shows that the mount rotated in Dec all the way around. I just went outside to check in the observatory and that's exactly how i found the mount.

Why is the mount slewing on its own until it hits the Dec limit after it connects to APCC Pro? How can I stop this behavior?

Thanks,

Luca


Re: Mount Maintenance

CaptMax
 

AP sells a grease kit for their mounts. This comes with everything you need including a brush. There is plenty of extra to apply a thin layer to the mating surfaces between the DEC and RA on a 1200GTO Mount. I just purchased a kit myself. I love doing business with AP. 
CaptMax 


Re: Mount Maintenance

Steven Panish
 

I assume that as on the 1200 it is the joint between the Dec and RA.  I use a waterproof grease.

Steve

On Thu, Feb 4, 2021 at 4:29 PM Bruce Bartle <brucebartle6@...> wrote:
Hello all

I was reading the Mach 1 GTO manual as I do from time to time to refresh my memory.  I noted something that I either didn't read before or just forgot.  Under the "Mount Maintenance" section (pg 31 or 32 depending on which version) it states "If the RA and DEC axis are attached together for a long time in outside conditions (i.e. in a permanent observatory) then the mating surfaces should be lightly oiled or greased - if you expect to get them apart again after 10 years".   This is my situation and I've had the mount for 6 years or so and plan on doing this maintenance as soon as it gets a bit warmer up here.  Three questions:  1) I assume this is the joint directly under the DEC clutch knobs?  Or is it the "lower" joint at the RA clutch knobs? (see schematic on page 7)  2) If anyone has done this - is there anything I should be aware of before I start?  3) any recommendations on oil or grease types?

Any help is appreciated.

Regards
--
Bruce
Meadowlark Ridge Observatory


Re: IC434 first picture for my AP MACH2 and custom built corrected newton #Mach2GTO

Bruce Bartle
 

Nicely done Andrea.  I like your processing - gentle, not pushed. 
--
Bruce
Meadowlark Ridge Observatory


Mount Maintenance

Bruce Bartle
 

Hello all

I was reading the Mach 1 GTO manual as I do from time to time to refresh my memory.  I noted something that I either didn't read before or just forgot.  Under the "Mount Maintenance" section (pg 31 or 32 depending on which version) it states "If the RA and DEC axis are attached together for a long time in outside conditions (i.e. in a permanent observatory) then the mating surfaces should be lightly oiled or greased - if you expect to get them apart again after 10 years".   This is my situation and I've had the mount for 6 years or so and plan on doing this maintenance as soon as it gets a bit warmer up here.  Three questions:  1) I assume this is the joint directly under the DEC clutch knobs?  Or is it the "lower" joint at the RA clutch knobs? (see schematic on page 7)  2) If anyone has done this - is there anything I should be aware of before I start?  3) any recommendations on oil or grease types?

Any help is appreciated.

Regards
--
Bruce
Meadowlark Ridge Observatory


Remote power on/off via USB relay Arduino CH340. Maybe add it to APCC?

Micheal Fields Jr
 

Looking for a way to restart the mount I ventured onto Amazon and found this little USB relay device https://www.amazon.com/gp/product/B01CN7E0RQ

After poking around trying to figure out how to use it easily I found that documentation was limited and so was software.  I found a helpful youtube video https://www.youtube.com/watch?v=26XHb_cpiAA and the youtuber also provided example power shell scripts and a link to a piece of software that sends hex commands to the device to toggle on / off.

I found the power shell scripts more useful.  Here is an example to turn on/off

ON:
[Byte[]] $powerOn  = 0xA0, 0x01, 0x01, 0xA2
[Byte[]] $powerOff = 0xA0, 0x01, 0x00, 0xA1
$robojax = new-Object System.IO.Ports.SerialPort COM7,9600,None,8,one     <---- Note the com port must match what your windows sets for this device.
$robojax.Open()
$robojax.Write($powerOn, 0, $powerOn.Count)
$robojax.Close()

OFF:
[Byte[]] $powerOn  = 0xA0, 0x01, 0x01, 0xA2
[Byte[]] $powerOff = 0xA0, 0x01, 0x00, 0xA1
$robojax = new-Object System.IO.Ports.SerialPort COM7,9600,None,8,one
$robojax.Open()
$robojax.Write($powerOff, 0, $powerOff.Count)
$robojax.Close()


So it occurs to me that this device is a nifty and inexpensive way to toggle your mount on and off as opposed to the more expensive remote power strips, it would be nice to have this somehow added to APCC where we can slide a switch on  or off and send these commands to the relay board and perhaps as an added bonus be able to specify a delay in seconds.  Eg, turn off for 10 seconds and then turn back on again.

And again yes I am familiar with remote controllable power strips where you can turn on and off certain devices. These are great for remote observatories for sure.  If you are going to spend this much on equipment you probably should go that route anyways.   

If it isn't a big deal to add this to APCC though, that would be wonderful to have.  Hi Ray!


APCC GrapeCity Error Message

John Jennings
 

I just started getting this popup in APPC Pro when I hit the Model Button. It has been running fine for years on Win7 and I'm up to date with the latest APPC version. It still functions ok with the latest model. I'm not including all the details on this post but can later if needed.


Re: Looking for one or two CP3's

Manusfisch
 

Donations to university might be tax deductible for the in-kind donation even if you take a little bit of cash for it the overall value is still what can be deducted

TJF Mobile

On Feb 4, 2021, at 13:18, Brian Valente <bvalente@...> wrote:


super great to see everyone pulling together, and kudos to you Christopher for making it happen for the University

On Thu, Feb 4, 2021 at 10:00 AM Christopher Erickson <christopher.k.erickson@...> wrote:
Several kind group members have come forward with CP3's for the University of Hawaii VYSOS project so we should be all-set.

Thanks to everyone who came forward off-list to help!

You guys are AWESOME!

-Christopher Erickson
Observatory Engineer
Summit Kinetics
Waikoloa, Hawaii


On Wed, Feb 3, 2021 at 5:20 PM Christopher Erickson via groups.io <christopher.k.erickson=gmail.com@groups.io> wrote:
One of the smaller UofH observatories I shepherd over here in Hawaii is using a 1200 and the existing CP3 has died. The budget for this particular research project is currently frozen so they can't simply replace it with a CP4. So my thought is that I will give them a CP3 to keep them going but first I have to find one. So if anyone here is willing to sell me an old CP3 that I can in-turn donate to the VYSOS-12 observatory, please contact me off-list.

Christopher dot k dot erickson at Gmail dot com.

-Christopher Erickson
Observatory engineer
Waikoloa, HI 96738
www.summitkinetics.com
   



--
Brian 



Brian Valente


Re: Looking for one or two CP3's

 

super great to see everyone pulling together, and kudos to you Christopher for making it happen for the University


On Thu, Feb 4, 2021 at 10:00 AM Christopher Erickson <christopher.k.erickson@...> wrote:
Several kind group members have come forward with CP3's for the University of Hawaii VYSOS project so we should be all-set.

Thanks to everyone who came forward off-list to help!

You guys are AWESOME!

-Christopher Erickson
Observatory Engineer
Summit Kinetics
Waikoloa, Hawaii


On Wed, Feb 3, 2021 at 5:20 PM Christopher Erickson via groups.io <christopher.k.erickson=gmail.com@groups.io> wrote:
One of the smaller UofH observatories I shepherd over here in Hawaii is using a 1200 and the existing CP3 has died. The budget for this particular research project is currently frozen so they can't simply replace it with a CP4. So my thought is that I will give them a CP3 to keep them going but first I have to find one. So if anyone here is willing to sell me an old CP3 that I can in-turn donate to the VYSOS-12 observatory, please contact me off-list.

Christopher dot k dot erickson at Gmail dot com.

-Christopher Erickson
Observatory engineer
Waikoloa, HI 96738
www.summitkinetics.com
   



--
Brian 



Brian Valente


Re: Looking for one or two CP3's

Christopher Erickson
 

Several kind group members have come forward with CP3's for the University of Hawaii VYSOS project so we should be all-set.

Thanks to everyone who came forward off-list to help!

You guys are AWESOME!

-Christopher Erickson
Observatory Engineer
Summit Kinetics
Waikoloa, Hawaii


On Wed, Feb 3, 2021 at 5:20 PM Christopher Erickson via groups.io <christopher.k.erickson=gmail.com@groups.io> wrote:
One of the smaller UofH observatories I shepherd over here in Hawaii is using a 1200 and the existing CP3 has died. The budget for this particular research project is currently frozen so they can't simply replace it with a CP4. So my thought is that I will give them a CP3 to keep them going but first I have to find one. So if anyone here is willing to sell me an old CP3 that I can in-turn donate to the VYSOS-12 observatory, please contact me off-list.

Christopher dot k dot erickson at Gmail dot com.

-Christopher Erickson
Observatory engineer
Waikoloa, HI 96738
www.summitkinetics.com
   


Re: Looking for one or two CP3's

Christopher Erickson
 

I was wondering about that! Thanks!

Eric, it looks like I can't use your abs encoder box on a 3600.

"My advice is always free and worth every penny!"

-Christopher Erickson
Observatory Engineer
Summit Kinetics
Waikoloa, Hawaii


On Thu, Feb 4, 2021 at 7:08 AM Howard Hedlund <howard@...> wrote:
HOLD ON, PLEASE!!   A GTOAE box can NOT be used with a 3600!  The 3600 requires a GTOELS box.  They are quite different.  Please call me at AP if you want to discuss.


Re: Looking for one or two CP3's

Howard Hedlund
 

The GTOCP3 will work, but the personality will need to be changed.  I can send you a script to do this.

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