Date   

Re: Ancient Stardust

Dean Jacobsen
 

You have a couple of months, it is in Cassiopeia.  :-)  Just giving you some advance warning.
--
Dean Jacobsen
http://astrophoto.net/wp/
Image Gallery - http://astrophoto.net/wp/image-gallery/
Astrobin - https://www.astrobin.com/users/deanjacobsen/ 


Re: Ancient Stardust

Roland Christen
 

Ok, if I get a chance. Right now it's monsoon out there.

Rolando



-----Original Message-----
From: Dean Jacobsen <deanjacobsen@...>
To: main@ap-gto.groups.io
Sent: Tue, Jul 7, 2020 7:13 pm
Subject: Re: [ap-gto] Ancient Stardust

Roland, if you are into imaging star clusters - and who wouldn't be if they had one of those nifty 160EDF telescopes - then put NGC 7789 on your list.  It is another one of those ancient open clusters with numerous red giants.  Approximately 1.6 billion years old.  It is more than twice as big and much brighter than NGC 6791.
--
Dean Jacobsen
http://astrophoto.net/wp/
Image Gallery - http://astrophoto.net/wp/image-gallery/
Astrobin - https://www.astrobin.com/users/deanjacobsen/ 


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

Stuart <stuart.j.heggie@...>
 

VERY pretty shot!


On Tue, 7 Jul 2020 at 19:19, <jypeng@...> wrote:
Hi all,
I configured 216 points for APPM tracking, and my target is M8 which is about 13 degrees above the horizon with 2 redwood trees on the east side and street light on the south. M8 is about three feet above my car garage roof after the meridian flip. Mach2 is doing very well with modeling. 
I have uploaded two images that are from the same data collected on Messier 8 - Lagoon Nebula.
I found out this blue lagoon looked so beautiful, so I decided to crop it to make it stand out. 
Feel free to comment on them. 
Thanks,
Jian Yuan Peng
Telescope: TEC 160FL + A-P QUADTCC-TEC160 x0.72
Mount: Astro-Physics Mach 2 GTO
Camera: ASI6200MM Pro
Acquisition Date: June 17 ~ July 1, 2020
Frame: SII : 81x360, Ha: 72x300, OIII: 60x300 bin2x2 total integrated time : 19 hours 6minutes
Filters: Astronomik CLS, Ha, SII, OIII
Software: PHD2, PixInsight, Lightroom, Sequence Generator Pro, Photoshop
Location: Palo Alto, California, USA


--

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


Re: Ancient Stardust

Stuart <stuart.j.heggie@...>
 

Lovely! 


On Tue, 7 Jul 2020 at 18:36, uncarollo2 <chris1011@...> via groups.io <chris1011=aol.com@groups.io> wrote:
I ran across this little jewel a few weeks ago while hunting up something to image with the Mach2 and 160EDF refractor, using unguided exposures. The open cluster NGC 6791 has a dozen or so bright (mostly red) stars in the foreground and thousands of fainter blue ones hiding behind. Taken thru murky skies during a summer heatwave that won't quit.


--

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


Re: Ancient Stardust

Dean Jacobsen
 

Roland, if you are into imaging star clusters - and who wouldn't be if they had one of those nifty 160EDF telescopes - then put NGC 7789 on your list.  It is another one of those ancient open clusters with numerous red giants.  Approximately 1.6 billion years old.  It is more than twice as big and much brighter than NGC 6791.
--
Dean Jacobsen
http://astrophoto.net/wp/
Image Gallery - http://astrophoto.net/wp/image-gallery/
Astrobin - https://www.astrobin.com/users/deanjacobsen/ 


Re: Ancient Stardust

Luca Marinelli
 

That’s a very nice star field. Lovely color and contrast!

—Luca


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

jypeng@...
 

Hi all,
I configured 216 points for APPM tracking, and my target is M8 which is about 13 degrees above the horizon with 2 redwood trees on the east side and street light on the south. M8 is about three feet above my car garage roof after the meridian flip. Mach2 is doing very well with modeling. 
I have uploaded two images that are from the same data collected on Messier 8 - Lagoon Nebula.
I found out this blue lagoon looked so beautiful, so I decided to crop it to make it stand out. 
Feel free to comment on them. 
Thanks,
Jian Yuan Peng
Telescope: TEC 160FL + A-P QUADTCC-TEC160 x0.72
Mount: Astro-Physics Mach 2 GTO
Camera: ASI6200MM Pro
Acquisition Date: June 17 ~ July 1, 2020
Frame: SII : 81x360, Ha: 72x300, OIII: 60x300 bin2x2 total integrated time : 19 hours 6minutes
Filters: Astronomik CLS, Ha, SII, OIII
Software: PHD2, PixInsight, Lightroom, Sequence Generator Pro, Photoshop
Location: Palo Alto, California, USA


Re: Ancient Stardust

Dean Jacobsen
 

Most excellent!  I just added it to my imaging list.
--
Dean Jacobsen
http://astrophoto.net/wp/
Image Gallery - http://astrophoto.net/wp/image-gallery/
Astrobin - https://www.astrobin.com/users/deanjacobsen/ 


Ancient Stardust

Roland Christen
 

I ran across this little jewel a few weeks ago while hunting up something to image with the Mach2 and 160EDF refractor, using unguided exposures. The open cluster NGC 6791 has a dozen or so bright (mostly red) stars in the foreground and thousands of fainter blue ones hiding behind. Taken thru murky skies during a summer heatwave that won't quit.

https://www.astrobin.com/9wa11k/0/?real=&nc=Uncarollo


Re: Mach1 and GTOCP4 Yellow Light

Roland Christen
 

Yes, slewing into the fixed limit will turn on the yellow light. Send the mount back to Park3, manually orient the axes to Park3 position, and you are good to go.

Rolando



-----Original Message-----
From: Christopher Erickson <christopher.k.erickson@...>
To: main@ap-gto.groups.io
Sent: Tue, Jul 7, 2020 4:17 pm
Subject: Re: [ap-gto] Mach1 and GTOCP4 Yellow Light

There is also some mysterious limits function in the CP4 that I have encountered in the past that I don't yet fully understand when using the CP4 and just the hand controller. It might manifest in other control scenarios as well. Basically, one day my Mach1 with CP4 wouldn't slew very far to the East (or West. I forget.) before the power light would go yellow and not let me slew farther. This was on a solid 13.6V 10A power supply. No hanging cables or other mechanical snags or problems. Cycling CP4 power got the red light back but as soon as I would try to slew into the "forbidden zone" the light would go yellow again. The mount was finding things in the sky everywhere else just fine and time/date/location/TZ info in the hand controller all looked fine. I tried a couple of "resume from Park X" procedures and suddenly the problem vanished and I could not duplicate it. I suspect that some safety limit variable was out of sync in the CP4, but I was unable to reproduce the problem to study it.

It has resurfaced about every other month or so on my Mach1/CP4 and the solution seems to be to do one or more CP4 power cycles and "Resume from Park X" procedures to get whatever variables inside the CP4 that are managing safety slews resynchronized with the rest of the CP4 code.

I shared this info with the AP CP4 programmer but I didn't hear back if he was able to reproduce the problem and/or get it figured out and fixed.

And of course there is always the chance that somehow I was unknowingly causing the problem and there isn't a mystery horizon limit bug in the current CP4 code.  

I hope this helps.

Virus-free. www.avg.com

On Tue, Jul 7, 2020 at 10:41 AM uncarollo2 <chris1011@...> via groups.io <chris1011=aol.com@groups.io> wrote:
Make sure you have enough voltage from your battery or power supply, and that you have nothing else running off that supply. Make sure that your cable from the power source is as short as possible. Long cables lose a lot of voltage between supply and the mount controller.

Rolando



-----Original Message-----
From: Mikko Viljamaa <mikko.viljamaa@...>
To: main@ap-gto.groups.io
Sent: Tue, Jul 7, 2020 3:03 pm
Subject: [ap-gto] Mach1 and GTOCP4 Yellow Light

This started a week ago when I would suddenly get a Yellow warning light with a random slew when connecting the mount with the SGP. My first thought was that the control unit has condensated again but I was wrong and it turned out to be bone dry. Next I tried to fiddle the power and the Y cable and that helped and the next few days were fine. Last night the mount had violently slewed again so my I’m thinking now that I have a faulty cable.

I ordered both new cables but I am wondering now is there anything else I should check before changing those cables tomorrow before a clear night again?


- Mikko


Re: Mach1 and GTOCP4 Yellow Light

John A. Sillasen
 

Dean suggests: "Check the input voltage to the CP4."  That is exactly what I was going to suggest as well.


John A. Sillasen



Re: Waves breaking on Orion's shores

Astrobob
 

Some times a monochrome image is hard to beat!

This is an excellent example…

 

Bob

 

Sent from Mail for Windows 10

 


Re: Mach1 and GTOCP4 Yellow Light

W Hilmo
 

I’ve had power supplies fail.  I’ve also had cables and connectors fail.

 

It’s worth checking.

 

From: main@ap-gto.groups.io <main@ap-gto.groups.io> On Behalf Of Mikko Viljamaa
Sent: Tuesday, July 7, 2020 2:28 PM
To: main@ap-gto.groups.io
Subject: Re: [ap-gto] Mach1 and GTOCP4 Yellow Light

 

[Edited Message Follows]

I have everything running from the same power unit, this since the day 1 two years ago. Nothing has changed and everything else still works fine. I’m not planning to have a separate power for the mount alone.


- Mikko


Re: Mach1 and GTOCP4 Yellow Light

Dean Jacobsen
 

Have you measured the voltage that is getting to the mount?
--
Dean Jacobsen
http://astrophoto.net/wp/
Image Gallery - http://astrophoto.net/wp/image-gallery/
Astrobin - https://www.astrobin.com/users/deanjacobsen/ 


Re: Mach1 and GTOCP4 Yellow Light

Cheng-Yang Tan
 

Well, it does no harm by checking whether it is a power supply problem. They have been known to fail. First thing is to put a multimeter on it and make sure it's spitting out the correct voltage. The second thing is to just power up the mount *without* any of your accessories/gear to see whether you have the yellow light. If you don't, then you know it is the power supply.

cytan

On Tuesday, July 7, 2020, 04:29:39 PM CDT, Mikko Viljamaa <mikko.viljamaa@...> wrote:


[Edited Message Follows]

I have everything running from the same power unit, this since the day 1 two years ago. Nothing has changed and everything else still works fine. I’m not planning to have a separate power for the mount alone.


- Mikko


Re: Mach1 and GTOCP4 Yellow Light

Christopher Erickson
 

Try one or more CP4 power cycles and "Resume from Park X"

Virus-free. www.avg.com


On Tue, Jul 7, 2020 at 11:28 AM Mikko Viljamaa <mikko.viljamaa@...> wrote:
I got everything running from the same power unit, this since the day 1 two years ago. Nothing has changed and everything else still works fine. I’m not planning to have a separate power for the mount alone.


- Mikko


Re: Mach1 and GTOCP4 Yellow Light

Mikko Viljamaa
 
Edited

I have everything running from the same power unit, this since the day 1 two years ago. Nothing has changed and everything else still works fine. I’m not planning to have a separate power for the mount alone.


- Mikko


Re: Mach1 and GTOCP4 Yellow Light

Christopher Erickson
 

There is also some mysterious limits function in the CP4 that I have encountered in the past that I don't yet fully understand when using the CP4 and just the hand controller. It might manifest in other control scenarios as well. Basically, one day my Mach1 with CP4 wouldn't slew very far to the East (or West. I forget.) before the power light would go yellow and not let me slew farther. This was on a solid 13.6V 10A power supply. No hanging cables or other mechanical snags or problems. Cycling CP4 power got the red light back but as soon as I would try to slew into the "forbidden zone" the light would go yellow again. The mount was finding things in the sky everywhere else just fine and time/date/location/TZ info in the hand controller all looked fine. I tried a couple of "resume from Park X" procedures and suddenly the problem vanished and I could not duplicate it. I suspect that some safety limit variable was out of sync in the CP4, but I was unable to reproduce the problem to study it.

It has resurfaced about every other month or so on my Mach1/CP4 and the solution seems to be to do one or more CP4 power cycles and "Resume from Park X" procedures to get whatever variables inside the CP4 that are managing safety slews resynchronized with the rest of the CP4 code.

I shared this info with the AP CP4 programmer but I didn't hear back if he was able to reproduce the problem and/or get it figured out and fixed.

And of course there is always the chance that somehow I was unknowingly causing the problem and there isn't a mystery horizon limit bug in the current CP4 code.  

I hope this helps.

Virus-free. www.avg.com


On Tue, Jul 7, 2020 at 10:41 AM uncarollo2 <chris1011@...> via groups.io <chris1011=aol.com@groups.io> wrote:
Make sure you have enough voltage from your battery or power supply, and that you have nothing else running off that supply. Make sure that your cable from the power source is as short as possible. Long cables lose a lot of voltage between supply and the mount controller.

Rolando



-----Original Message-----
From: Mikko Viljamaa <mikko.viljamaa@...>
To: main@ap-gto.groups.io
Sent: Tue, Jul 7, 2020 3:03 pm
Subject: [ap-gto] Mach1 and GTOCP4 Yellow Light

This started a week ago when I would suddenly get a Yellow warning light with a random slew when connecting the mount with the SGP. My first thought was that the control unit has condensated again but I was wrong and it turned out to be bone dry. Next I tried to fiddle the power and the Y cable and that helped and the next few days were fine. Last night the mount had violently slewed again so my I’m thinking now that I have a faulty cable.

I ordered both new cables but I am wondering now is there anything else I should check before changing those cables tomorrow before a clear night again?


- Mikko


Re: Mach1 and GTOCP4 Yellow Light

Roland Christen
 

Make sure you have enough voltage from your battery or power supply, and that you have nothing else running off that supply. Make sure that your cable from the power source is as short as possible. Long cables lose a lot of voltage between supply and the mount controller.

Rolando



-----Original Message-----
From: Mikko Viljamaa <mikko.viljamaa@...>
To: main@ap-gto.groups.io
Sent: Tue, Jul 7, 2020 3:03 pm
Subject: [ap-gto] Mach1 and GTOCP4 Yellow Light

This started a week ago when I would suddenly get a Yellow warning light with a random slew when connecting the mount with the SGP. My first thought was that the control unit has condensated again but I was wrong and it turned out to be bone dry. Next I tried to fiddle the power and the Y cable and that helped and the next few days were fine. Last night the mount had violently slewed again so my I’m thinking now that I have a faulty cable.

I ordered both new cables but I am wondering now is there anything else I should check before changing those cables tomorrow before a clear night again?


- Mikko


Re: Mach1 and GTOCP4 Yellow Light

Dean Jacobsen
 

Check the input voltage to the CP4.
--
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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