Best Algorithm to use for programming PEC

[Alruckle]

Is there a preferred PHD2 RA algorithm to use for Programming PEC on my Losmandy G11? Also it is logical to me to have the guide camera aligned as closely as possible, so that each axis motor drove the correction on its own axis.

( In other words the RA motor provide the corrections for the RA guiding rather than both motors being required to make RA corrections due to the camera and mount not being aligned which would require both RA and DEC motors to run to make a RA correction.)

aruckle

[bw_msgboard]

Hi Al. The apps that do periodic error measurement and correction don't
want guiding enabled at all. They need to deal with the raw error in the
mount so guiding just gets in the way. So when you're trying to program
PEC, don't run PHD2 at all.

The orientation of the guide camera never matters with PHD2. Some users
like to roughly align the camera with the RA/Dec movements but this is never
necessary, it's just something they like to do. Also, moving the scope in
RA is always accomplished by just adjusting the speed of the RA motor -
that's just how the mount works. If PHD2 wants to adjust the guide star
position in RA or Dec, it just sends those guide commands and the mount runs
the appropriate motor. All of this stuff is sorted out during calibration -
how the camera axes are rotated relative to the mount axes, how fast the
mount moves, all that stuff. It all works, nothing very difficult about it,
and certainly no reason to ever worry about trying to align the camera in
any particular way. Of course, if you do a calibration and subsequently
rotate the camera by a significant amount, you'll need to re-do the
calibration. But that's about it.

Good luck,
Bruce

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[Alruckle]

[Alruckle]

Bruce
      

Thank you for your response.

 I have read about PemPro which requires ASCOM but am not familiar with any other program that records the tracking directly.the other ones I have read about refer to using  a log file from PHD2.   

Can you please suggest another program that records from the mount directly and does not require ASCOM?

Thank You,

aruckle

[bw_msgboard]

Before we get into all that, can you say why you can’t use ASCOM?  I assume if you’ve looked at PemPro, you must have a Windows system.  Anything that uses guide log data is likely to get a sub-par result compared to making the measurements directly.  There may be some kind of app that comes from the manufacturer of your mount but I don’t know what mount you have or anything about that.  If your mount and PC platform support an ASCOM interface, that’s the way you’ll want to go to get the best results, IMO.

 

Bruce

 

---

[Brian Valente]

Aruckle

 

If you aren’t using ascom in general, I highly recommend you start. Many of the programs use it as the glue to make all the programs work together. Imho ASCOM compatibility should be the first thing you look for, not something to avoid.

 

Thanks

 

Brian

 

 

Brian Valente

Brianvalentephotography.com

 

From: open-phd...@googlegroups.com [mailto:open-phd...@googlegroups.com] On Behalf Of Alruckle

Sent: Sunday, May 28, 2017 8:44 AM
To: Open PHD Guiding <open-phd...@googlegroups.com>
Cc: alru...@me.com; bw_m...@earthlink.net

[Alruckle]

Bruce,

     I have a Mac and ASCOM is not yet written for a Mac.   I have been using a Mac since 1984,  and just haven't had enough motivation to learn a new system after 33 years.

aruckle

[Andy Galasso]

On Sat, Jun 3, 2017 at 1:05 PM, Alruckle <alru...@me.com> wrote:

 

     ASCOM is not yet written for a Mac.

It is virtually certain that ASCOM will never be available for Mac since ASCOM is fundamentally based on the Microsoft COM infrastructure and is inherently a Windows-only solution.

INDI is the cross-platform alternative to ASCOM, and INDI is available for Mac OSX. PHD2 on Linux already supports INDI, and we have an open feature request to enable INDI support on the Mac (#348.)  The main thing stopping us from getting that work done is that the PHD2 developers only have access to an old Mac Mini that cannot be upgraded to the level it needs to be at to run the development tools required to build INDI (XCode 7.2).

If anyone has a Mac running El Capitan or later that they could loan or donate to the project, then we should be able to proceed with getting INDI to work with PHD2 on Mac OSX.

Andy

[Andy Galasso]

On Sat, Jun 3, 2017 at 3:47 PM, Andy Galasso <andy.g...@gmail.com> wrote:

If anyone has a Mac running El Capitan or later that they could loan or donate to the project, then we should be able to proceed with getting INDI to work with PHD2 on Mac OSX.

Yay! We got a volunteer to loan us a Mac! Mac improvements coming soon...

[Hans]

That is good news ! (maybe combine this effort with INDI on Windows #450 right away ?)
You provably want to run an INDI server with simulators.

-- Hans

[Alruckle]

Andy,  

      Does PemPro run with INDI?

[Andy Galasso]

On Sun, Jun 4, 2017 at 9:29 PM, Alruckle <alru...@me.com> wrote:

      Does PemPro run with INDI?

I doubt it, but you could ask in the pempro forum. Pempro is windows-only, so I guess it would only work with ASCOM (but that's just a guess on my part.)