Date   

Re: ISS Tracked using APCC Pro v1.9

Karen Christen
 

So fun!  Great capture, Brent!

Karen

AP

 

From: main@ap-gto.groups.io <main@ap-gto.groups.io> On Behalf Of Brent Boshart
Sent: Thursday, August 26, 2021 6:03 AM
To: main@ap-gto.groups.io
Subject: [ap-gto] ISS Tracked using APCC Pro v1.9

 

[Edited Message Follows]

APCC v1.9 has a great new feature which offers "real time" (non-cached) modelled mount coordinates.  This allows for closed loop satellite tracking (comparing the mount's current position to the satellite and making small tracking adjustments to the tracking rate).  Early this morning I was able to capture ISS (unfortunately through a lot of fog).  My Mach 2 was able to keep ISS nicely centered through my C8 (focal length 2032mm)  while capturing only the center 1024x768 portion of my camera chip.  

https://www.youtube.com/watch?v=CzjEAqnEBZA


--
Karen Christen
Astro-Physics


Re: ISS Tracked using APCC Pro v1.9

Dean Jacobsen
 

Very cool Brent.  Is SkyTrack updated to use the Mach2 yet?  I am going to have to get my dual band Yagi out of the closet and mount it on the Mach2 and start talking on the AMSATS again.
--
Dean Jacobsen
Astrobin Image Gallery - https://www.astrobin.com/users/deanjacobsen/


Fantastic PE correction: AP1100 and PEMPro

Luca Marinelli
 

I recently cleaned and lubricated my AP1100 with fixed gearboxes. After some help from George to fine tune gear meshing, last night I was ready to create a new PE correction curve. I'll let the charts speak for themselves but needless to say I was extremely pleased with the smooth and moderate uncorrected PE of the mount, the incredible 0.46 arc-sec peak to peak corrected PE, and how well PEMPro works to generate these excellent results.

Thank you very much to both AP and Ray Gralak for these outstanding products!

Luca

Before PE correction (average over 6 worm cycles):



After PE correction (average over 3 worm cycles):


Re: ISS Tracked using APCC Pro v1.9

Ray Gralak
 

Nice job, Brent! I'm glad the new real-time RA/Dec feature helped you keep ISS centered!

-Ray

-----Original Message-----
From: main@ap-gto.groups.io [mailto:main@ap-gto.groups.io] On Behalf Of Brent Boshart
Sent: Thursday, August 26, 2021 4:03 AM
To: main@ap-gto.groups.io
Subject: [ap-gto] ISS Tracked using APCC Pro v1.9

APCC v1.9 has a great new feature which offers "real time" (non-cached) modelled mount coordinates. This allows
for closed loop satellite tracking (comparing the mount's current position to the satellite and making small tracking
adjustments to the tracking rate). Early this morning I was able to capture ISS (unfortunately through a lot of fog).
My Mach 2 was able to keep ISS nicely centered through my C8 (focal length 2032mm) which capturing only the
center 1024x768 portion of my camera chip.

https://www.youtube.com/watch?v=CzjEAqnEBZA


Re: APCC 1.9.0.1 and SGP Meridian Flip problem

Ray Gralak
 

Hi Luca,

I'll take a look. I made some changes to the SGPro REST API interface to try to make it work with NINA, but that didn't work out, so I created a new interface class for NINA. I thought I had restored the SGPro class, but maybe I missed something. Howver, I probably won't be able to look at this until the weekend.

-Ray

-----Original Message-----
From: main@ap-gto.groups.io [mailto:main@ap-gto.groups.io] On Behalf Of Luca Marinelli
Sent: Wednesday, August 25, 2021 9:42 PM
To: main@ap-gto.groups.io
Subject: [ap-gto] APCC 1.9.0.1 and SGP Meridian Flip problem

Hi Ray,

I have installed APCC Pro 1.9.0.1 and the command Send Limit with offsets to SGPro appears not to work any
longer. If I change the Flip Offset, the meridian flip time in SGPro does not change and it always reflects the time of
the actual meridian crossing, plus whatever constant offset is set in SGPro. You can see the Error message in the
screenshot. I have noticed that in the Advanced Settings there is a new tab to choose Meridian Flip support for
SGPro or NINA. I set the radio button to SGPro.

Do you have any thoughts on what might be going on?

Thanks,

Luca



Re: #APCC - V1.9 Tracking Error #APCC

Ray Gralak
 

Hi Rouz,

I never would have guessed it would throw the model off so much.
I am not convinced that was the cause.

A good PEC table will not affect the model. However, if the PEC table was corrupted or partially-written into the controller it might cause an offset in the accumulated table values, which would be seen as RA drift. This would not affect Dec tracking, which seemed to be also affected.

I think the real issue was insufficient or deficient data. You may have heard of the adage: "garbage in, garbage out". This applies to modeling, which is just a best-fit of the data.

-Ray

-----Original Message-----
From: main@ap-gto.groups.io [mailto:main@ap-gto.groups.io] On Behalf Of Rouz
Sent: Wednesday, August 25, 2021 9:23 PM
To: main@ap-gto.groups.io
Subject: Re: [ap-gto] #APCC - V1.9 Tracking Error

Hi Ray,

Yes I should have tested the curve to verify it, but rushed to build a model and test.

In general, given the PE is a couple of arcseconds, I thought its not all that critical if PEM was on/off or even
inaccurate/incorrect.

I never would have guessed it would throw the model off so much.

I was quite disappointed for the past few days and was starting to think about looking for another OTA that would
accommodate an OAG.

Appreciate all the guidance (no pun intended) from you guys!


-Rouz


Re: Backup port won't "stick" as none, changes to COM3

Ray Gralak
 

Hi Linwood,

However, each time I open APCC it changes it back to COM3.
It's a little complicated because when TCP or UDP is selected the primary COM port is shown as the backup port. The intent was to make it easy to switch between the network and the COM port configurations when both network and COM port configurations are available.

I agree that adding the "None" option to the primary port (aka Backup port for TCP/UDP) is not doing what you would expect. I'll fix this in the next build.

-Ray

-----Original Message-----
From: main@ap-gto.groups.io [mailto:main@ap-gto.groups.io] On Behalf Of ap@CaptivePhotons.com
Sent: Wednesday, August 25, 2021 7:32 AM
To: main@ap-gto.groups.io
Subject: [ap-gto] Backup port won't "stick" as none, changes to COM3

Cosmetic nit:

There is a dropdown option for backup COM port, which in my case defaulted to COM3. I do not have a backup
port wired, as if I lose the LAN my session is kind of hosed anyway, and I changed it to "none".

However, each time I open APCC it changes it back to COM3.

I assume it should actually stick.

Unless I'm missing a step or something?

Linwood








Auto-connect AP V2 Driver and APCC 1.9.0.1: Error message and failure to start driver

Luca Marinelli
 

The AP V2 driver fails to start when I select auto-connect in APCC Pro 1.9.0.1. I get two error messages, as shown in the attached screenshots. After clicking the messages away, I can start the driver manually without any errors.

After rolling back to v.1.8.8.17 due to the meridian flip problem, I noticed that this error message does not appear in the old version and AP V2 driver starts successfully with the auto connect option.

Thanks,

Luca


Re: APCC 1.9.0.1 and SGP Meridian Flip problem

Luca Marinelli
 

As expected, the meridian flip failed at 2:20am because SGP requested a slew to flip the mount just past the crossing of the meridian and APCC left the mount CW up because it was still inside the West limits.

Logs are here:

APCC : https://www.dropbox.com/s/hjr9lovrpb77gkg/ApccZip-Luca_Marinelli-2021-08-26-072646.zip?dl=0
SGP: https://www.dropbox.com/s/jg5356ejuvlpm73/sg_logfile_20210825201211.log?dl=0

I rolled back to APCC Pro 1.8.8.17 and I have tested that the meridian flip with SGPro works with that version. I'll stick with that until this is resolved.

Thanks,

Luca


ISS Tracked using APCC Pro v1.9

Brent Boshart
 
Edited

APCC v1.9 has a great new feature which offers "real time" (non-cached) modelled mount coordinates.  This allows for closed loop satellite tracking (comparing the mount's current position to the satellite and making small tracking adjustments to the tracking rate).  Early this morning I was able to capture ISS (unfortunately through a lot of fog).  My Mach 2 was able to keep ISS nicely centered through my C8 (focal length 2032mm)  while capturing only the center 1024x768 portion of my camera chip.  

https://www.youtube.com/watch?v=CzjEAqnEBZA


Re: APCC 1.9.0.1 and SGP Meridian Flip problem

Luca Marinelli
 

Adding the screenshot again as an attachment.

Luca


APCC 1.9.0.1 and SGP Meridian Flip problem

Luca Marinelli
 

Hi Ray,

I have installed APCC Pro 1.9.0.1 and the command Send Limit with offsets to SGPro appears not to work any longer. If I change the Flip Offset, the meridian flip time in SGPro does not change and it always reflects the time of the actual meridian crossing, plus whatever constant offset is set in SGPro. You can see the Error message in the screenshot. I have noticed that in the Advanced Settings there is a new tab to choose Meridian Flip support for SGPro or NINA. I set the radio button to SGPro.

Do you have any thoughts on what might be going on?

Thanks,

Luca


Re: #APCC - V1.9 Tracking Error #APCC

Rouz
 

Hi Ray,

Yes I should have tested the curve to verify it, but rushed to build a model and test.

In general, given the PE is a couple of arcseconds, I thought its not all that critical if PEM was on/off or even inaccurate/incorrect. 

I never would have guessed it would throw the model off so much. 

I was quite disappointed for the past few days and was starting to think about looking for another OTA that would accommodate an OAG. 

Appreciate all the guidance (no pun intended) from you guys!


-Rouz


Re: #APCC - V1.9 Tracking Error #APCC

Ray Gralak
 

Hi Rouz,

You should check the PEC curve by enabling PEM and capturing 3-5 worm cycles.

If PE is reduced you are done.

If peak-to-peak PE is greater than when you started, you need to invert the PEC curve and re-upload it to the mount.

-Ray

-----Original Message-----
From: main@ap-gto.groups.io [mailto:main@ap-gto.groups.io] On Behalf Of Rouz
Sent: Wednesday, August 25, 2021 8:44 PM
To: main@ap-gto.groups.io
Subject: Re: [ap-gto] #APCC - V1.9 Tracking Error

That's good to hear Roland.

The first two nights were with the factory PEC curve where I had drift too. But a lot of things have been refined since
then.

The last session worked all the "refinements" but PEM off.

Let's see how things will look with this PEC curve added and a fresh APPM model.

Thanks,

-Rouz


Re: #APCC - V1.9 Tracking Error #APCC

Rouz
 

That's good to hear Roland.

The first two nights were with the factory PEC curve where I had drift too. But a lot of things have been refined since then.

The last session worked all the "refinements" but PEM off.

Let's see how things will look with this PEC curve added and a fresh APPM model.

Thanks,

-Rouz


Re: #APCC - V1.9 Tracking Error #APCC

Roland Christen
 

The curve looks good.

Roland



-----Original Message-----
From: Rouz <rbidshahri@...>
To: main@ap-gto.groups.io
Sent: Wed, Aug 25, 2021 10:09 pm
Subject: Re: [ap-gto] #APCC - V1.9 Tracking Error

Roland,

The file on CP4 was a flat line with some steps in it, that explains it.

Made a new pec curve from from the data I had:
# Declination # 34.5
# Right Ascension # 22.4
(I can get lower Dec but will have to move further west of the meridian).

Re-wrote the pec file and will try again when clear. 


Thanks,

-Rouz

--
Roland Christen
Astro-Physics


Re: #APCC - V1.9 Tracking Error #APCC

Rouz
 

Roland,

The file on CP4 was a flat line with some steps in it, that explains it.

Made a new pec curve from from the data I had:
# Declination # 34.5
# Right Ascension # 22.4
(I can get lower Dec but will have to move further west of the meridian).

Re-wrote the pec file and will try again when clear. 


Thanks,

-Rouz


Re: #APCC - V1.9 Tracking Error #APCC

Roland Christen
 

I would have added the 4th harmonic for a better fit.

Roland



-----Original Message-----
From: Rouz <rbidshahri@...>
To: main@ap-gto.groups.io
Sent: Wed, Aug 25, 2021 6:11 pm
Subject: Re: [ap-gto] #APCC - V1.9 Tracking Error

Ill try to read the CP4 data "from mount".

Here was my previous data, did save the file.

My FWHM values are typically around 2.4". Rarely goes just below 2".

I just manually focused last night without running an AF routine, yes I suspect with smaller FWHM the errors will show up more.

Overall, I'm glad the stars are points now vs streaks as they were previously.

Will work in fine tuning the system soon.

--
Roland Christen
Astro-Physics


Re: #APCC - V1.9 Tracking Error #APCC

Rouz
 

Ill try to read the CP4 data "from mount".

Here was my previous data, did save the file.

My FWHM values are typically around 2.4". Rarely goes just below 2".

I just manually focused last night without running an AF routine, yes I suspect with smaller FWHM the errors will show up more.

Overall, I'm glad the stars are points now vs streaks as they were previously.

Will work in fine tuning the system soon.


Re: #APCC - V1.9 Tracking Error #APCC

Roland Christen
 

With a scope of this aperture, when the seeing gets good you should get FWHM of 1.2 arc sec, and then you will see the effects of a proper PE correction.

Rolando



-----Original Message-----
From: Rouz <rbidshahri@...>
To: main@ap-gto.groups.io
Sent: Wed, Aug 25, 2021 5:21 pm
Subject: Re: [ap-gto] #APCC - V1.9 Tracking Error

Measured eccentricity is still acceptable with PEM off at a scale of 0.92 arcsec/pixel.

Subs were 300s, seeing was quite poor and cloudy.


PEC training should tighten that up further I'm sure.

--
Roland Christen
Astro-Physics

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