Re: AP1200 - Starting from Park5


Horia
 

Thank you George.

 

This is a roll-away shed and it has been designed such that we must use Park 5. Coming from another mount not having the issue, we were not aware of this problem. We will have to take care of it in the automation software. Will see …

 

Regards,

Horia

 

 

Von: main@ap-gto.groups.io <main@ap-gto.groups.io> Im Auftrag von George
Gesendet: Freitag, 18. Dezember 2020 23:17
An: main@ap-gto.groups.io
Betreff: Re: [ap-gto] AP1200 - Starting from Park5

 

Horia,

 

To avoid the downward dip, it is also possible to use Park 4.    I assume that your facility will allow it.

 

Regards,

 

George

 

George Whitney

Astro-Physics, Inc.

Phone:  815-222-6538 (direct line)

Phone:  815-282-1513 (office)

Email:  george@...

 

From: main@ap-gto.groups.io <main@ap-gto.groups.io> On Behalf Of Horia
Sent: Friday, December 18, 2020 3:39 PM
To: main@ap-gto.groups.io
Subject: Re: [ap-gto] AP1200 - Starting from Park5

 

George,

 

yes this is a solution.

 

But this is supposed to be an automated system, starting in the evening and parking in the morning. Having to insert a GoTo Park 3 in front of the start-up procedure – this not being an ASCOM command – is not an elegant option. We might insert Polaris as a dummy target for the evening preparation but this is a kludge.

 

I would expect to have some option like „intelligen slew“ inside the driver to prevent this to happen.

 

Would APCC take care of this?

 

Kind regards,

Horia

 

 

 

Von: main@ap-gto.groups.io <main@ap-gto.groups.io> Im Auftrag von George
Gesendet: Freitag, 18. Dezember 2020 22:12
An: main@ap-gto.groups.io
Betreff: Re: [ap-gto] AP1200 - Starting from Park5

 

Horia,

 

Unpark the mount from your Park 5 and go to Park 3.    From there you can slew around.    By doing the above you’ll avoid a downward dip.

 

Regards,

 

George

 

George Whitney

Astro-Physics, Inc.

Phone:  815-222-6538 (direct line)

Phone:  815-282-1513 (office)

Email:  george@...

 

From: main@ap-gto.groups.io <main@ap-gto.groups.io> On Behalf Of Horia
Sent: Friday, December 18, 2020 2:43 PM
To: main@ap-gto.groups.io
Subject: [ap-gto] AP1200 - Starting from Park5

 

We have an AP-1200 mount carrying a 16“ f/5 Newton. The scope must be parked at Park5. As the system is installed at 50° North, the declination of the Park5 is 40°.

 

 

 

 

Now, every time the mount does a GoTo from the park position to a target on the East side and having a declination lower than 40° (and a lot of them targets are there) both axes start slewing at the same time. The net result is that the telescope first makes a sharp nosedive and only later starts pointing back to the stars. This is between bad (the mirror moves in the cell) and awfully bad (the scope makes a hard landing).

 

 

The Mount has a CP3 controller. For the firmware version I would have to check (the system is remote). The ASCOM driver is at 5.30.10 level. No APCC.

 

Is there an option to tell the mount to delay the DEC axis until it is safe to start it? Is this function only available in APCC? Would an upgrade to CP4 help?

 

Kind Regards,

Horia

 

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