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Re: SGP Camera Control Support

Ross Salinger
 

Thanks to both of you for the responses. I'm thinking of abandoning MaximDL this summer. What I was really wondering is whether SGP and PHD can be used to replace MaximDL, including plate solving and model building.

I should have asked it that way.

I'd like to do some things using SiTech that MaximDL just doesn't support properly and so that's why I asked the question. No knock on MDL which has it's own strengths, of course. Just horses for courses.

Rgrds-Ross

On 5/6/2021 2:13 PM, paul K wrote:
Hi Ross 
In sgp just pick sitech DLL from the telescope chooser. As Sitech is an ASCOM application, it will work with any ASCOM software.

In your equipment profile in sgp pick PHD2 as the autoguider.

There's a really good support forum for sgp, just Google main sequence software.

Paul


Re: SGP Camera Control Support

paul K
 

Hi Ross 
In sgp just pick sitech DLL from the telescope chooser. As Sitech is an ASCOM application, it will work with any ASCOM software.

In your equipment profile in sgp pick PHD2 as the autoguider.

There's a really good support forum for sgp, just Google main sequence software.

Paul


Re: Meridian Flip Settings Explained

MartinC
 

Thanks Don,

I installed 095P in my observatory & configured the settings as above, then setup SGP to target NGC7023. I've just tried plate solving & centering. For both cases I had the mirror slew condition.

I then repeated with the default Over Pole & track past settings (2, -2 & 2). This time I can confirm plate solving & centering worked perfectly.

Personally my preference would be a method of 'ignoring' the track past limit. Then I could just leave the Overpole limits alone???

But I have no idea how difficult that would be? Maybe it would just be masking what ever the underlying reason is? So pehaps it would be best to understand why first.

I'll look forward to hearing Dans findings.

Many thanks for your attention, Don.

Best regards
Martin


Re: Where can I find the absolute basics?

Karl Adlon
 

Thank you! I was hoping it would be something like that!
Karl


Re: SGP Camera Control Support

Don W
 

Hi Ross,
Yes, SiTech can connect to SGP Pro.  It is in the Camera Stuff in SiTech ChangeConfig.  I haven't used it since I don't have SGP.
Don W


Re: Meridian Flip Settings Explained

Don W
 

Hi Martin,

OK, I am now able to duplicate your motion with 095P.  I had to set my latitude to over 60° (I am at 33°) and I set all the settings in Mount Parms to your settings.  I started SiTech with my mount parked at the zenith, Unparked, and slewed to a star in the north-east under the pole.  When I clicked on the same star and commanded a slew, it went to the mirror slew position (just as you said).

I then clicked on the same eastern star and the mount slewed back to it. Slewing to any other star was normal (not mirrored).

I will get this back to Dan so he can check this out.

Don W


Re: Meridian Flip Settings Explained

MartinC
 

Hi Don,

Thanks for getting back to me on this. That's interesting. For the videos that I produced I was using 095M.exe
I have just upgraded to 095P.exe and I find the problem is exactly the same.

When Jon shared his screen with me to demonstrate the same problem using Voyager/plate solving I noticed he was already using 095P.exe

I find a very quick & dirty but reliable test is to just use Skyview with the settings as per the image below, slew to any object in the NE quadrant, then reselect the same object & GOTO it again. I experience the "mirror" slew. I f I try the same test in a different quadrant I do not.

Currently I'm using my main desktop PC without any equipment or client application connections. Just Skyview.

Tonight may offer some clear spells for a real plate solve test in 5 or 6 hours time using my observatory PC with everything connected as normal. I don't think it will make a difference but I will let you know. I already have a target in mind that I'm working on.

Best regards
Martin


SGP Camera Control Support

Ross Salinger
 

There was some previous discussion about using SGP rather than MaximDL for imaging in SiTech. Is that now a supported feature which includes both camera control and the use of PHD for guiding? 

Rgrds-Ross 


Re: ServoConfig/Ticks Determination Problei Don and

Don W
 

Hi David,

It sounds like you have an Alt-Az mount so the tics/rev for you need to be correct for both Az and Alt.  You do need to do any changes to them in ServoConfig Auto Tracking.
Don W


Re: Meridian Flip Settings Explained

Don W
 

Hi Martin,

I was able to trigger those mirror slews using SiTech 095G.  But the latest version is 095P and I can't duplicate the mirror slews with that version.

http://siderealtechnology.com/SiTechSetup095P.exe

Please try this version and let us know what you find.
Don W


Re: ServoConfig/Ticks Determination Problei Don and

David N.
 

Don,

I presume when you say to "add tics" I would do so in ServoConfig/Auto Tracking, and to fine-tune tracking in DragN/Track mode I would adjust Azimuth Motor Encoder Ticks. Have I got that right?

To fine-tune Go-To accuracy in SlewN/Track mode would I adjust both motor and scope Azimuth encoders, or which one?

Thanks.........David


Re: Where can I find the absolute basics?

Don W
 

Hi Karl,

Welcome to SiTech.  The SiTech system is very good at converting mounts to GoTo and tracking.  Back in 2009 we wrote a Setup Manual that describes the features and many examples of mount installations and conversions using the Servo I controller.  That manual is available at http://www.siderealtechnology.com/SetupManual.pdf

There is also an Operations Manual that describes using the SiTech system at http://www.siderealtechnology.com/OperationsManual.pdf.

Since that time a Servo II controller was developed.  It has a much faster processor and can handle more current for larger servo motors.

The servos that SiTech sells may be enough to control your 18" DOB, depending on how you decide to drive the axis.  Those servos ar easily controlled with the Servo I controller.  SiTech buys these servos in quantity, so their price is the best.  If you need larger servos, the cost will go up a lot.

This forum is always available to answer questions you might have.  There are many SiTech users who have knowledge and experience doing what you want to do.

Don W


Re: Argo Navis not communicating with the Servo Controller II

Roy Diffrient
 

Hi Raphael,

Have you Initiated Argo Navis communication?  So simple, so easily skipped, I often forget it – On the keypad, press the top right and top left (ESC and RTN) keys at the same time.  Then try the encoders.

Roy Diffrient


On May 5, 2021, at 10:43 PM, Raphael T Vilardi <rtvilardi@...> wrote:

Dear All.

I'm not able to have the Argo Navis communicate with the Servo Controller II. I've followed the protocols: on the Servo Config: Select "Enable Argo Navis" and "Ignore Mount encoders" (as I don't have them) and selected the "Slew mode".

On the Argo Navis: I’m using the special cables supplied by Wildcard Innovations connecting Serial port 1 to the RS232 port at the Servo Controller; choose serial port 1 and STARTUP Command of sitech and a BAUD rate of 19200 in the SETUP SERIAL menu. The SETUP ALT STEPS and SETUP AZ STEPS values were put at +18000. Still when I move the telescope the reading at the Mode Encoders would not change indicating that there is no communication. Has anyone ever come across a similar problem?  Best regards

 


Where can I find the absolute basics?

Karl Adlon
 

Hi All
I have an 18" f4.5 Dob that I'm considering updating to goto.
What is/are the best place(s) to start?
Thanks Much!
Karl


Re: Argo Navis not communicating with the Servo Controller II

Don W
 

Hi Raphael,

Check your serial cable.  There are two kinds of cables: Straight-through and NULL.  The NULL cable reverses two of the connections (I think they are the R and T wires).  You can buy a Null adapter from Amazon or a computer store to use with your existing cable.
https://www.amazon.com/female-slimline-transfer-serial-adapter/dp/B075XHWVSJ/ref=sr_1_3?dchild=1&keywords=serial+NULL+adapter&qid=1620283514&sr=8-3

Don W


Re: ServoConfig/Ticks Determination Problei Don and

Don W
 

Raphael,
The shortcut is to carefully measure the motion and the error and apply the ratio to your tics/ref.  If your motion is short, then you must add tics.  Tracking is only in RA, so the procedure is to move only RA (constant DEC) a large amount - say 45 degrees (or 3 hours of RA).  Then measure how far the error is from what you told it to move to.

The formula is:  (New tics/ref) = (Old tics/rev) *  (Commanded motion / Actual motion)

Where (Commanded motion / Actual motion) = Commanded motion in arc-sec / Actual motion in arc-sec.

Don W


Argo Navis not communicating with the Servo Controller II

Raphael T Vilardi
 

Dear All.

I'm not able to have the Argo Navis communicate with the Servo Controller II. I've followed the protocols: on the Servo Config: Select "Enable Argo Navis" and "Ignore Mount encoders" (as I don't have them) and selected the "Slew mode".

On the Argo Navis: I’m using the special cables supplied by Wildcard Innovations connecting Serial port 1 to the RS232 port at the Servo Controller; choose serial port 1 and STARTUP Command of sitech and a BAUD rate of 19200 in the SETUP SERIAL menu. The SETUP ALT STEPS and SETUP AZ STEPS values were put at +18000. Still when I move the telescope the reading at the Mode Encoders would not change indicating that there is no communication. Has anyone ever come across a similar problem?  Best regards

 


Re: ServoConfig/Ticks Determination Problei Don and

Raphael T Vilardi
 

Hi Don and Yann. I've just tried Yann's suggestion and changed the TPR to 44,000,000 and...it works! However, the precision is still an issue; the go to would take the scope close to the object now but still outside the field of view of an F-38 eyepiece. The tracking is still below expectations: I put one star at the center of a 12.5 mm illuminated reticle eye piece and 10 minutes latter the star was already a little off center. I know there are tips on how to improve the accuracy on the Operation Manual and I will study it but perhaps you could provide a short cut? Kkk Bets regards


Re: ServoConfig/Ticks Determination Problem

Don W
 

Hi Raphael,

When you run the ticks measurement in Servo Config, you put the 360 degrees into the box.  When you are measureing the tics, whatever is in the box is probably wrong, since the data is not yet set into the controller.  Try YE's suggestion.
Don W


Re: ServoConfig/Ticks Determination Problem

Raphael T Vilardi
 

Hi Yann. Thanks for the suggestion. I'll try it and let you know. But what bugs me is that, the very first time I did the Ticks Determination it was working fine. It did the first full 360° CW cycle and showed the correct TPR. However, when it was doing the CCW, the AC power cord disconnect and I switched to a 12V power pack, that I’ve been using all the time. That's when the odd behavior started. Perhaps I should uninstall the Serco Config App and reinstall it. Unfortunatelly I won't be able to do it before next Friday. I'm loosing some rare clear skyes around here... best regards

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