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  #21  
Old 18-03-2016, 08:49 PM
themos
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Hello Andy,

I've had people with Macs use it. As I say, get Anaconda for Mac and then you can run all kinds of python programs, such as this one. It's also been used by Southern Hemisphere people.

Themos Tsikas

Quote:
Originally Posted by Andy01 View Post
I'm happy to give this a go, if it's mac compatible.

I can see the Celestial Pole region from where I usually set up.
I can attach a camera to my mount and bring image files to my laptop.
I can freely rotate the RA axis on my EQ6
I have internet connectivity

I don't have Python, is it also mac compatible?

Attached is a screenshot of my current PA, as seen through my mount, along with a phd graph.

Cheers

Andy
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  #22  
Old 22-03-2016, 09:10 AM
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... error messages to tell us what went wrong.
Result is attached...
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  #23  
Old 22-03-2016, 05:02 PM
themos
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Hello,

I think this is a symptom of using python3 instead of python2.7. Can you check which version of python you are using?

Themos

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Result is attached...
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  #24  
Old 25-03-2016, 01:52 PM
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Visionoz (Bill)
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Hi Themos

Can attest to the fact the your PPA works perfectly for me since when you posted here and I went to Stargazers to get some help from you initially about setting it up and all.

Agree that it does what you designed it for and helped me to polar align my EQ6 when out mobile and away from obsy. Using Win7 Pro 64bit & EOS 40D with a 100mm macro as the lens.

Cheers and once again thanks for the open-source PPA util mate.

HTH
Bill
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  #25  
Old 25-03-2016, 04:33 PM
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Quote:
Originally Posted by themos View Post
Hello,

I think this is a symptom of using python3 instead of python2.7. Can you check which version of python you are using?

Themos
It is latest, 3.4.. I need it for some other apps.

What's next move?
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  #26  
Old 25-03-2016, 04:56 PM
themos
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Quote:
Originally Posted by bojan View Post
It is latest, 3.4.. I need it for some other apps.

What's next move?
Hello,

I think that both versions can coexist, so download 2.7 Anaconda from https://www.continuum.io/downloads#_windows

Themos

Last edited by themos; 25-03-2016 at 05:55 PM.
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  #27  
Old 05-04-2016, 07:40 PM
themos
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Hello bojan,

I just thought I would ask if you had any success with it yet?

Themos
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  #28  
Old 07-04-2016, 06:34 AM
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Hi Themos,
No luck so far.. I couldn't make two versions of python coexist, so I gave up for now..
Could you try to adjust your code for the latest versions of python?
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  #29  
Old 07-04-2016, 03:21 PM
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Quote:
Originally Posted by themos View Post
The software will be in the public domain.

Themos Tsikas (themos.tsikas@gmail.com)
I assume you mean freeware and not public domain. You might consider using the GPL licensing to protect yourself from an intellectual property standpoint. If you make it public domain, anyone can modify it without recognizing the original works and sell it regardless.

I took a look at the source, while you have the authour listed, you really need to include a copyright notice and make yourself the copyright holder.

I suggest the following...
Code:
Created on Sun Oct 12 22:40:05 2014

Copyright 2016 - Themos Tsikas, Jack Richmond
All right reserved
or include the standard GPL license located at http://www.gnu.org/licenses/gpl-3.0.en.html

If you decide to GPL it, bear in mind that people can still modify it, but must include the original source and make reference to the original authours / copyright holders.

The other thing it does is protect you in the way of warranties. If your program screws something up, you will not be held liable. The bottom of the page explains how to include the license into your software.

Look for "How to Apply These Terms to Your New Programs"


OIC!
Standard Disclaimer. I am not a lawyer, my advice is worth exact what you are paying me... in this case, zero.
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  #30  
Old 07-04-2016, 06:02 PM
themos
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Quote:
Originally Posted by bojan View Post
Hi Themos,
No luck so far.. I couldn't make two versions of python coexist, so I gave up for now..
Could you try to adjust your code for the latest versions of python?
That's a shame, I thought it was possible. I am not sure when I might get round to investing the time necessary to port it to python3.

Themos
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  #31  
Old 07-04-2016, 06:03 PM
themos
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Quote:
Originally Posted by OICURMT View Post
I assume you mean freeware and not public domain.
I actually meant public domain! please make money from this, if you can, that will be a hoot.

Themos
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  #32  
Old 07-04-2016, 06:24 PM
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Quote:
Originally Posted by themos View Post
I actually meant public domain! please make money from this, if you can, that will be a hoot.

Themos

WOW.. you don't see that often
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  #33  
Old 11-01-2017, 11:26 PM
torsion (Bram)
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Hi Themos,

Just wanted to say thanks. After installing Python via Anaconda all is working great (tried it within cygwin with no luck).

I have an iOptron iEQ45 mount with the usual ALT and AZ adjustment screws and nuts. I wrote a little python script to tell me how many turns to each adjustment screw I 'should' apply to optimise the polar alignment (this requires a few physical parameters from the mount, such a thread pitch, radius of actuation etc).

After PPA gives the 'Move' details, I put these into my little script and it tells me which knob to turn and by how much. I thought I added (or incorporate) it to your program, but your python skills are well above mine so I will leave that for another day.

Attached is a screenshot after three iterations with the suggested turns (did some PA improvements after a few days).

My polar alignment routine is greatly simplified and improved, thanks heaps.

cheers,
Bram
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  #34  
Old 12-01-2017, 12:45 AM
themos
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Hello Bram, that's good to know. I am a bit worried by the quality of the astrometry solve though, the stars are not centred in their circles, or at least they don't seem to be. Can you share your actual images, please?

Themos


Quote:
Originally Posted by torsion View Post
Hi Themos,

...
Attached is a screenshot after three iterations with the suggested turns (did some PA improvements after a few days).

My polar alignment routine is greatly simplified and improved, thanks heaps.

cheers,
Bram
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  #35  
Old 12-01-2017, 10:28 PM
torsion (Bram)
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Hi Themos,

Yeah, I noticed that but didn't think much of it. I upload the images onto the nova server and await the response.

Attach are my last three 'improvements', they are on flikr

1) https://flic.kr/p/QYwo2r
2) https://flic.kr/p/R6GvxG
3) https://flic.kr/p/R6Gv7w

Thanks for checking this out.

cheers,
Bram
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  #36  
Old 13-01-2017, 01:20 AM
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Hello, I submitted one of your images to nova.astrometry.net and I see this:

Center (RA, Dec)50.025, -85.317)
Center (RA, hms):03h 20m 06.087s
Center (Dec, dms):-85° 19' 02.717"
Size:26.7 x 17.8 deg
Radius:16.071 deg
Pixel scale:47 arcsec/pixel

I think that's too wide an image, frankly. The more sky you include, the harder it is to match stars as optical distortion kicks in. I would try using a different optical system with less than half that scale, that is, under 20 arcsec/pixel and I would be more comfortable with something under 10. About 3 fingers of sky should be enough.

Themos
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  #37  
Old 13-01-2017, 08:08 AM
torsion (Bram)
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Thanks. Hmm, why didn't I think of that.

This is my (our) only lens for our canon, which piggybacks on my telescope to do wide field shots. Always wanted to get a longer focal length less but haven't manage to justify

Maybe I will see to do a drift align and see how far off the alignment is, given the wide field of view.

cheers,
Bram
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  #38  
Old 13-01-2017, 03:14 PM
torsion (Bram)
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I had the photos linked to the astrometry.net group on flikr and just received their results, and they say 27 arcsec/pixel.

However, if you do the math (or use an online FOV calculator), they give ~17 arcsec/pixel for a Canon EOS T2i with a 50mm lens. So I am confused.
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  #39  
Old 28-12-2017, 06:43 PM
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Hi Themos. This looks like a neat utility. But I wonder if you had a list of the Python libraries it requires? I have worked out the following, by debugging, but I might not have caught them all: numpy, scipy, astropy, ujson, pillow (PIL), image

Last edited by Amaranthus; 28-12-2017 at 08:58 PM.
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  #40  
Old 28-12-2017, 08:03 PM
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Themis, your method for doing this is kind of old-tech.

I’m able to connect my iPhone via wifi directly to my camera, which provides full remote control including live view, taking the shot and transferring the image to the iPhone. There is also an api for iOS developers.

Seems to me it would be far simpler to write an iOS app that does it all in the phone or iPad.

Maybe one day someone will.
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