Date   

Re: Mach1 and GTOCP4 Yellow Light

Mikko Viljamaa
 

I already tried the second Y cable which I ordered. I can’t believe the cable is the issue unless the brand new Y cable is faulty also. 


- Mikko


Re: Mach1 and GTOCP4 Yellow Light

Roland Christen
 

You have a bad connection to the motor encoder. Could be in the Y cable, could be inside the gearbox, could be a loose wire or broken wire on one of the connectors on the RA part of the cable.

 First thing I would do is to connect the RA cable to the Dec gearbox and see if it acts the same way. If so, then the fault is in the cable. If the Dec does not run away using the RA cable, but the RA does, then the fault would be inside the gearbox.

If all else fails and you can't figure anything out then call AP support tomorrow and they will help you do some tests.

Rolando



-----Original Message-----
From: Mikko Viljamaa <mikko.viljamaa@...>
To: main@ap-gto.groups.io
Sent: Fri, Jul 10, 2020 10:24 pm
Subject: Re: [ap-gto] Mach1 and GTOCP4 Yellow Light

Well I changed the power unit first yesterday and that didn’t help. Neither did the power cord and actually at this point the mount even refused to connect. So I had not high hopes when I changed the Y cable but miracles happen and with the new Y cable everything worked fine last night. 
This until an hour ago when I tried to start a sequence again only to run into the same problem again. When the mount is connected, the RA axes immediately slews about 20 degrees after which it stops and the yellow light is on. 
If I try to open the RA gearbox tomorrow, what exactly should I look for?


- Mikko


Re: Mach1 and GTOCP4 Yellow Light

Christopher Erickson
 

Swap the two Y-cable motor connectors on the motors with each other and see if the problem switches to the DEC motor. Then report back.

Virus-free. www.avg.com


On Fri, Jul 10, 2020 at 5:49 PM Mikko Viljamaa <mikko.viljamaa@...> wrote:

Yes previously the slew took longer and was more random. So long that a couple of times I had to cut the power so that the scope won’t hit the tripod. No encoders in Mach1, not at least in mine.

If by a connector you mean the Y cable I already tried another cable. I’m not sure how I could check the connector itself.

Thanks,

Mikko


Re: Mach1 and GTOCP4 Yellow Light

Mikko Viljamaa
 

Yes previously the slew took longer and was more random. So long that a couple of times I had to cut the power so that the scope won’t hit the tripod. No encoders in Mach1, not at least in mine.

If by a connector you mean the Y cable I already tried another cable. I’m not sure how I could check the connector itself.

Thanks,

Mikko


Re: Mach1 and GTOCP4 Yellow Light

Christopher Erickson
 

"...the RA axes immediately slews about 20 degrees after which it stops and the yellow light is on." 
 
New information! (at least to me?)

Sounds like the encoder on the back of the RA motor or a damaged motor cable connector or a bad driver or encoder interface chip in the CP4.

Swap the motor connectors and see if the problem swaps motors.


Virus-free. www.avg.com


On Fri, Jul 10, 2020 at 5:24 PM Mikko Viljamaa <mikko.viljamaa@...> wrote:

Well I changed the power unit first yesterday and that didn’t help. Neither did the power cord and actually at this point the mount even refused to connect. So I had not high hopes when I changed the Y cable but miracles happen and with the new Y cable everything worked fine last night. 

This until an hour ago when I tried to start a sequence again only to run into the same problem again. When the mount is connected, the RA axes immediately slews about 20 degrees after which it stops and the yellow light is on. 

If I try to open the RA gearbox tomorrow, what exactly should I look for?


- Mikko


Re: Mach1 and GTOCP4 Yellow Light

Mikko Viljamaa
 

Well I changed the power unit first yesterday and that didn’t help. Neither did the power cord and actually at this point the mount even refused to connect. So I had not high hopes when I changed the Y cable but miracles happen and with the new Y cable everything worked fine last night. 

This until an hour ago when I tried to start a sequence again only to run into the same problem again. When the mount is connected, the RA axes immediately slews about 20 degrees after which it stops and the yellow light is on. 

If I try to open the RA gearbox tomorrow, what exactly should I look for?


- Mikko


Re: Some open cluster goodness.

Dean Jacobsen
 

Thanks for taking a look guys. 
--
Dean Jacobsen
http://astrophoto.net/wp/
Image Gallery - http://astrophoto.net/wp/image-gallery/
Astrobin - https://www.astrobin.com/users/deanjacobsen/ 


Re: Some open cluster goodness.

diogenes ofsinope
 

Beautiful exploration of a "quiet" corner of the night sky.

Michael 


Re: Some open cluster goodness.

Stuart <stuart.j.heggie@...>
 

Beautiful job on this Dean! So much in the FOV!


On Fri, 10 Jul 2020 at 18:07, Dean Jacobsen <deanjacobsen@...> wrote:
It has been a little quiet around here lately... probably because of that darn moon.

I love it when I can point my telescope at the Milky Way and take pictures of open clusters.

I took a wide field h-alpha image of the area around Sharpless 2-101 a few weeks ago which also included the open clusters NGC 6883 and NGC 6871.  I went back and took a look at a color image I took of this field a couple of years ago and re-processed it to bring out a little more of the red emission nebula that is everywhere in the background. 

TheSkyX tells me that there are 7 different open clusters in this field that are contained in its databases.

Here is a link to the Astrobin "fit to window" view.  Take a look at 100% resolution view by clicking on the full resolution button in the upper right corner.

https://www.astrobin.com/full/355961/B/

Some of the highlights of this field are:

- NGC 6883, the bright group of stars just to the left of center,
- NGC 6871, the bright group right of center, about half way to the right edge,
- Biurakan 2 and Biurakan 1 are between NGC 6883 and NGC 6871, Biurakan 2 is on the left,
- Dolidze 3 at the upper left corner,
- Dolidze 1 at top center, a little bit down from the bright white star,
- IC 1310 is at center bottom.

There are numerous Barnard and Lynd's Dark Nebula scattered throughout the field that are partially obscured by the multitudes of foreground stars.

I used my trusty AP900 for this one.

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


--

Stuart
http://www.astrofoto.ca/stuartheggie/


Re: Some open cluster goodness.

Roland Christen
 

Ah, the advantages of a short focal length. So many stuffs fit into the field. Nice catch.

Rolando



-----Original Message-----
From: Dean Jacobsen <deanjacobsen@...>
To: main@ap-gto.groups.io
Sent: Fri, Jul 10, 2020 5:07 pm
Subject: [ap-gto] Some open cluster goodness.

It has been a little quiet around here lately... probably because of that darn moon.

I love it when I can point my telescope at the Milky Way and take pictures of open clusters.

I took a wide field h-alpha image of the area around Sharpless 2-101 a few weeks ago which also included the open clusters NGC 6883 and NGC 6871.  I went back and took a look at a color image I took of this field a couple of years ago and re-processed it to bring out a little more of the red emission nebula that is everywhere in the background. 

TheSkyX tells me that there are 7 different open clusters in this field that are contained in its databases.

Here is a link to the Astrobin "fit to window" view.  Take a look at 100% resolution view by clicking on the full resolution button in the upper right corner.

https://www.astrobin.com/full/355961/B/

Some of the highlights of this field are:

- NGC 6883, the bright group of stars just to the left of center,
- NGC 6871, the bright group right of center, about half way to the right edge,
- Biurakan 2 and Biurakan 1 are between NGC 6883 and NGC 6871, Biurakan 2 is on the left,
- Dolidze 3 at the upper left corner,
- Dolidze 1 at top center, a little bit down from the bright white star,
- IC 1310 is at center bottom.
There are numerous Barnard and Lynd's Dark Nebula scattered throughout the field that are partially obscured by the multitudes of foreground stars.

I used my trusty AP900 for this one.
--
Dean Jacobsen
http://astrophoto.net/wp/
Image Gallery - http://astrophoto.net/wp/image-gallery/
Astrobin - https://www.astrobin.com/users/deanjacobsen/ 


Some open cluster goodness.

Dean Jacobsen
 

It has been a little quiet around here lately... probably because of that darn moon.

I love it when I can point my telescope at the Milky Way and take pictures of open clusters.

I took a wide field h-alpha image of the area around Sharpless 2-101 a few weeks ago which also included the open clusters NGC 6883 and NGC 6871.  I went back and took a look at a color image I took of this field a couple of years ago and re-processed it to bring out a little more of the red emission nebula that is everywhere in the background. 

TheSkyX tells me that there are 7 different open clusters in this field that are contained in its databases.

Here is a link to the Astrobin "fit to window" view.  Take a look at 100% resolution view by clicking on the full resolution button in the upper right corner.

https://www.astrobin.com/full/355961/B/

Some of the highlights of this field are:

- NGC 6883, the bright group of stars just to the left of center,
- NGC 6871, the bright group right of center, about half way to the right edge,
- Biurakan 2 and Biurakan 1 are between NGC 6883 and NGC 6871, Biurakan 2 is on the left,
- Dolidze 3 at the upper left corner,
- Dolidze 1 at top center, a little bit down from the bright white star,
- IC 1310 is at center bottom.

There are numerous Barnard and Lynd's Dark Nebula scattered throughout the field that are partially obscured by the multitudes of foreground stars.

I used my trusty AP900 for this one.

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


Re: #Mach2GTO - Can It Handle TEC 180FL? #Mach2GTO

dvjbaja
 

Amen.  :-)



Sent via the Samsung Galaxy Note9, an AT&T 5G Evolution capable smartphone


-------- Original message --------
From: Benoit Schillings <benoit.schillings@...>
Date: 7/9/20 9:25 PM (GMT-08:00)
To: main@ap-gto.groups.io
Subject: Re: [ap-gto] #Mach2GTO - Can It Handle TEC 180FL?

I never had any regrets to go to the 1600... it is still pretty easy
to put together without help.

-- benoit

On Thu, Jul 9, 2020 at 8:31 PM tranathi via groups.io
<tranathi@...> wrote:
>
> Thank you, Roland. Seems like the 1100 + ATS tripod would be a good long-term investment for me then.
>




Re: #Mach2GTO - Can It Handle TEC 180FL? #Mach2GTO

Benoit Schillings
 

I never had any regrets to go to the 1600... it is still pretty easy
to put together without help.

-- benoit

On Thu, Jul 9, 2020 at 8:31 PM tranathi via groups.io
<tranathi=yahoo.com@groups.io> wrote:

Thank you, Roland. Seems like the 1100 + ATS tripod would be a good long-term investment for me then.


Re: #Mach2GTO - Can It Handle TEC 180FL? #Mach2GTO

tranathi@...
 

Thank you, Roland. Seems like the 1100 + ATS tripod would be a good long-term investment for me then.


Re: Mach1 and GTOCP4 Yellow Light

Roland Christen
 

The CP4 has a different power connector. There are no pins to spread. The advice to spread pins does not apply to the CP4.

Rolando



-----Original Message-----
From: Ajay Narayanan via groups.io <ajynrynn@...>
To: main@ap-gto.groups.io
Sent: Thu, Jul 9, 2020 10:57 am
Subject: Re: [ap-gto] Mach1 and GTOCP4 Yellow Light

I had exactly the symptoms you describe with an AP900 and a CP3 controller. I called AP from the field and George's advice was to spread the prongs of the central pin of the power connector. I don't know if that applies to your CP4. I also notices that the battery terminals were a little corroded. So I spread the prongs with a pocket knife and cleaned the battery terminals. One of those fixed the issue and resulted in the controller seeing the correct voltage.

Ajay


Re: Mach1 and GTOCP4 Yellow Light

Ajay Narayanan <ajynrynn@...>
 

I had exactly the symptoms you describe with an AP900 and a CP3 controller. I called AP from the field and George's advice was to spread the prongs of the central pin of the power connector. I don't know if that applies to your CP4. I also notices that the battery terminals were a little corroded. So I spread the prongs with a pocket knife and cleaned the battery terminals. One of those fixed the issue and resulted in the controller seeing the correct voltage.

Ajay


Re: Messier 8: TEC160FL + A-P QUADTCC-TEC160 n+ Mach2Gto Modeling

eckhard.voelcker@...
 

Beautiful Lagoon Nebula!


Re: Messier 8: TEC160FL + A-P QUADTCC-TEC160 n+ Mach2Gto Modeling

jypeng@...
 

Dean, Stuart,
Thank you!
Jian Yuan Peng


Re: Ancient Stardust

Michael Hambrick <mike.hambrick@...>
 

Thanks for that information Roland.

It is interesting that you used the same number of blue sub-frames as for the other filters. I have read that most CCD cameras are less sensitive to blue light, and with that many blue stars I would have expected to see more blue sub-frames.

I will add NGC 6791 to the list of objects to capture with my 180 EDT if we ever get a break in the weather and the Sahara dust in Southeast Texas.

Best Regards

Michael Hambrick
ARLANXEO
TSR Global Manufacturing Support
PO Box 2000
Orange, TX 77631-2000
Phone: +1 (409) 882-2799
email: mike.hambrick@...


Re: Ancient Stardust

Dean Jacobsen
 

The way it is set up isn't the best, but there is an "add more" button on the bottom so you can enter in the details for one filter first, then click on the "add more" button for the page to expand and you can add details for another filter, etc.
--
Dean Jacobsen
http://astrophoto.net/wp/
Image Gallery - http://astrophoto.net/wp/image-gallery/
Astrobin - https://www.astrobin.com/users/deanjacobsen/ 

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