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Re: First PemPro and G11 Run


Sep 10, 2011

 


----------------------------

#49587 Sep 10, 2011

Hello Everyone.



I plan to do a PemPro run on my G11 tonight for the very first time and want to ask a balance question. Should the mount be balanced neutral, or east heave (I'll be using a star west of the meridian)?

Would it be better to do several runs, while moving the counter weights before each run, to find the best balance point in terms of P.E. smoothness?



Also, if you have any other tips please let me know them too.





I greatly appreciate your help!



R,



Joe



----------------------------

#49588 Sep 12, 2011

Always bias to the east as this takes all the backlash out of the gears

and make the mount push the OTA.

On 10/09/2011 16:09, kc5dfp wrote:

> Hello Everyone.

>

> I plan to do a PemPro run on my G11 tonight for the very first time and want to ask a balance question. Should the mount be balanced neutral, or east heave (I'll be using a star west of the meridian)?

> Would it be better to do several runs, while moving the counter weights before each run, to find the best balance point in terms of P.E. smoothness?

>

> Also, if you have any other tips please let me know them too.

>

>

> I greatly appreciate your help!

>

> R,

>

> Joe

>

>



----------------------------

#49589 Sep 10, 2011

Set it up like you're going to when you image. So east heavy.



Jared



Sent from my iPhone



----------------------------

#49590 Sep 10, 2011

Joe,



Are you using a Gemini on your G11? If so, make sure to look over the section in PEMPro for the Gemini:



www.siriusimaging.com/Help/PEMProV2/gemini.htm



-Ray Gralak

Author of Astro-Physics Command Center (APCC)

Author of PEMPro: www.ccdware.com

Author of Astro-Physics V2 ASCOM Driver: www.gralak.com/apdriver

Author of PulseGuide: www.pulseguide.com

Author of Sigma: www.gralak.com/sigma



> -----Original Message-----

> From: Losmandy_users@yahoogroups.com [mailto:Losmandy_users@yahoogroups.com] On Behalf Of

> kc5dfp

> Sent: Saturday, September 10, 2011 8:10 AM

> To: Losmandy_users@yahoogroups.com

> Subject: [Losmandy_users] First PemPro and G11 Run

>

>

>

> Hello Everyone.

>

> I plan to do a PemPro run on my G11 tonight for the very first time and want to ask a

> balance question. Should the mount be balanced neutral, or east heave (I'll be using a star

> west of the meridian)?

> Would it be better to do several runs, while moving the counter weights before each run, to

> find the best balance point in terms of P.E. smoothness?

>

> Also, if you have any other tips please let me know them too.

>

> I greatly appreciate your help!

>

> R,

>

> Joe

>

>

>

>



----------------------------

#49591 Sep 10, 2011

Thanks Everyone for the replies.



Ray,



Yes I have a Gemini, and have reviewed the Gemini section. Hopefully all goes well, but I'll let you all know tomorrow.



Thanks Again.



Joe



----------------------------

#49592 Sep 10, 2011

Also,



Should I connect to the Gemini through the autoguider port or the RS232 port?





Thanks.



Joe



----------------------------

#49593 Sep 10, 2011

Joe,



Everything that PEMPro needs to do will be through the Gemini driver so you don't need to use the autoguider port

(although can still have it connected if you want).



-Ray



-Ray Gralak

Author of Astro-Physics Command Center (APCC)

Author of PEMPro: www.ccdware.com

Author of Astro-Physics V2 ASCOM Driver: www.gralak.com/apdriver

Author of PulseGuide: www.pulseguide.com

Author of Sigma: www.gralak.com/sigma



> -----Original Message-----

> From: Losmandy_users@yahoogroups.com [mailto:Losmandy_users@yahoogroups.com] On Behalf Of

> kc5dfp

> Sent: Saturday, September 10, 2011 2:51 PM

> To: Losmandy_users@yahoogroups.com

> Subject: [Losmandy_users] Re: First PemPro and G11 Run

>

>

>

> Also,

>

> Should I connect to the Gemini through the autoguider port or the RS232 port?

>

> Thanks.

>

> Joe

>

>

>

>



----------------------------

#49596 Sep 10, 2011

Pec is programmed over the serial. If you have questions give me a call.



Jared --- In Losmandy_users@yahoogroups.com, "kc5dfp" kc5dfp@...> wrote:

>

> Thanks Ray.

>

> What port do I use to program the PEC then?

>

> R,

>

> Joe

>



----------------------------

#49597 Sep 10, 2011

Also make sure that you select "Gemini Level 4" in the telescope selection area. You should then have a "Gemini L4" tab on the main window. After you have acquired ample data (about an hour or so). Generate your PEC curve and go to the "Gemini L4" tab to upload the PEC curve to the mount.



I always have to check the "Invert Curve" option on mine or else the PEC actually gets worse. I'm not sure if this varies based on the side of the pier that I acquire the data on or what. Just make sure that after you program PEC that you turn it on and acquire a couple of worm cycles worth of data to verify that everything with the PEC curve is correct.



The Gemini also has an issue where enabling PEC can make the worm turn slightly faster. I believe Ray has added something that acquires data and automagicly fixes this...but I haven't played with that feature since it was implemented.



All this is reminding me that I need to redo the PEC on my mount since I just broke it down and tuned it up.



Good luck!



Jared



--- In Losmandy_users@yahoogroups.com, "kc5dfp" kc5dfp@...> wrote:

>

> Thanks Ray.

>

> What port do I use to program the PEC then?

>

> R,

>

> Joe

>







----------------------------

#49598 Sep 10, 2011

Thanks Jared.



I 'm gathering data and figured I get about 5~6 cycles and calculate the curve. I connected to the mount via GPUSB and the autoguider port, and everything worked just fine. I guess I'll have to switch to the serial port after collecting the data.



I'll be up for a while with this so I'll post more later.



R,



Joe



----------------------------

#49599 Sep 10, 2011

I would just use the serial connection 100%. No reason to use the guide port as PEMPro gets more information from Gemini via serial. It can sync up with the worm connection and everything, it's pretty powerful actually. I'm not sure how much you used your G8 with the serial connection but the Gemini ASCOM driver is one of the best I've used! PEMPro makes very good use of it. I can't remember the last time I actually hooked up the hand controller!



If you acquire with the guide port you're going to have to program it that way too. I'm not positive but I'm pretty sure that if you DON'T collect data via serial you can't upload it that way. So you'll need to enable PEC playback via PEMPro and use the hand controller to have the mount start to record the data. Also any additional slewing could mess things up since the cycles will no longer be synced. PEMPro has a running counter that shows the worm position. For the guide port this is just an guestimate, for serial connection it actually syncs with the motors so you can slew around and it's still valid as it knows where the worm is at.



Also the PEC programming is tied to your guide rate so if you acquired data at .8X then PEC is only valid for that guide rate. This is true with or without using the serial connection.



Jared

--- In Losmandy_users@yahoogroups.com, "kc5dfp" kc5dfp@...> wrote:

>

> Thanks Jared.

>

> I 'm gathering data and figured I get about 5~6 cycles and calculate the curve. I connected to the mount via GPUSB and the autoguider port, and everything worked just fine. I guess I'll have to switch to the serial port after collecting the data.

>

> I'll be up for a while with this so I'll post more later.

>

> R,

>

> Joe

>



----------------------------

#49601 Sep 11, 2011

Jared,



I couldn't connect to the mount using the Gemini lvl 4 setting. I got an error along the lines of "Gemini not responding, check power..."... something like that.



I was able to connect using the GPUSB and calibrate the mount with no issues, but wasn't able to program through it.



Any thoughts?



I did get 6 runs of data. I need to post it.



R,



Joe



----------------------------

#49604 Sep 12, 2011

Have you been able to connect to the mount with that serial cable before? I've found that I generally need to manually start the Gemini driver and connect the telescope before I attempt to connect any other programs to the mount. For me that works every time. If I'm not currently connected via the Gemini ASCOM driver and I try to connect via Starry Nights, or whatever, then it seems to work some, and fail other times.



I think to program PEC via the ST4 port you have to go into the Gemini menu on the hand controller and select to record PEC. Then have PEMPro playback the PEC via the ST4 port. You'll need to let it playback for the entire worm cycle. I've never programmed it like that. So maybe someone else can jump in with the correct procedure.



Jared

--- In Losmandy_users@yahoogroups.com, "kc5dfp" kc5dfp@...> wrote:

>

>

> Jared,

>

> I couldn't connect to the mount using the Gemini lvl 4 setting. I got an error along the lines of "Gemini not responding, check power..."... something like that.

>

> I was able to connect using the GPUSB and calibrate the mount with no issues, but wasn't able to program through it.

>

> Any thoughts?

>

> I did get 6 runs of data. I need to post it.

>

> R,

>

> Joe

>



----------------------------

#49607 Sep 12, 2011

Hi Joe,

> I couldn't connect to the mount using the Gemini lvl 4 setting. I got an error along the

> lines of "Gemini not responding, check power..."... something like that.



1. Did you configure the COM port in the Gemini driver?



2. Make sure nothing else is connected on the COM port you wish to use.



-Ray Gralak

Author of Astro-Physics Command Center (APCC)

Author of PEMPro: www.ccdware.com

Author of Astro-Physics V2 ASCOM Driver: www.gralak.com/apdriver

Author of PulseGuide: www.pulseguide.com

Author of Sigma: www.gralak.com/sigma



> -----Original Message-----

> From: Losmandy_users@yahoogroups.com [mailto:Losmandy_users@yahoogroups.com] On Behalf Of

> kc5dfp

> Sent: Sunday, September 11, 2011 12:35 PM

> To: Losmandy_users@yahoogroups.com

> Subject: [Losmandy_users] Re: First PemPro and G11 Run

>

>

>

>

> Jared,

>

> I couldn't connect to the mount using the Gemini lvl 4 setting. I got an error along the

> lines of "Gemini not responding, check power..."... something like that.

>

> I was able to connect using the GPUSB and calibrate the mount with no issues, but wasn't

> able to program through it.

>

> Any thoughts?

>

> I did get 6 runs of data. I need to post it.

>

> R,

>

> Joe

>

>

>

>







----------------------------

#49620 Sep 12, 2011

Jared/Rat,



I just figured out my PemPro to Geminin communication issue. The pin out of the interconnect cable between the serial connector and the RS232 port is not wired correctly (Thanks for noting this Jasred).



I'll rewire it and test it over this next w/e.



Thanks Again.



Joe



----------------------------

#49621 Sep 12, 2011

Sorry about that Ray. You're not a Rat ;-)



--- In Losmandy_users@yahoogroups.com, "kc5dfp" kc5dfp@...> wrote:

>

> Jared/Rat,

>

> I just figured out my PemPro to Geminin communication issue. The pin out of the interconnect cable between the serial connector and the RS232 port is not wired correctly (Thanks for noting this Jasred).

>

> I'll rewire it and test it over this next w/e.

>

> Thanks Again.

>

> Joe

>



----------------------------

#49685 Sep 18, 2011

Hello Everyone.



I rewired the serial connector cable today, and was able to connect to the Gemini. I even connected to PemPro and the Sky too. I did some slews and it appears to work well.



Now, all I need is a camera. I sold my QHY8 today, so hopefully I come accross one of the cameras I'm looking for, so I can program my mount.



Anyway, thanks for the help.



R,



Joe



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