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NINA/Onstep meridian flip

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#1 Maxtrixbass

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Posted 18 December 2020 - 11:23 AM

I'm having problems getting NINA to do a meridian flip. It does initiate it internally, but the mount itself does not respond. If I have the Onstep "auto" flip on its own it will work, so I'm guessing the signal is either not being sent to the mount or the mount isn't responding to it. It does continue tracking, so it isn't that it has reached a limit (have also experimented with those values).

 

 

Losmandy gm8

Onstep 3.16

 

Any ideas?

 



#2 happylimpet

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Posted 18 December 2020 - 11:41 AM

Maybe set NINA to do its flip 15 minutes later....its basically just a goto command issued after the scope has passed meridian, so if the scope hasnt passed meridian, it wont flip.



#3 Maxtrixbass

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Posted 18 December 2020 - 11:52 AM

Maybe set NINA to do its flip 15 minutes later....its basically just a goto command issued after the scope has passed meridian, so if the scope hasnt passed meridian, it wont flip.

I'll try 15 minutes. I have tried everything from 0 to 10 minutes and can watch it pass the meridian in The Sky X, but maybe it wasn't enough.
 



#4 Maxtrixbass

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Posted 18 December 2020 - 07:43 PM

Bingo! Success.

 

To encapsulate the solution:

 

1. Set preferred pier side to "east" ( my option for this was found in the "global.h" category found in the IDE software)
2. Make sure the Onstep limits extend beyond the  NINA flip trigger (I used 15 degree limit for Onstep, 10 minute delay past the meridian in NINA)
3. It will work if the Onstep auto flip is on or off. Simpler to leave Onstep's off, but if it never reaches the Onstep limits Onstep itself won't ever trigger a flip. NINA will flip before it reaches the Onstep trigger.

 

 

All NINA is doing is sending a GoTo to the same spot, so if you don't have east as a preferred side it will basically just stay where it is. If you have east (and of course the pier is before the flip "west") then it sends a goto signal for the same point in the sky, but Onstep thinks it should move to the preferred "east" and the mount meridian flips.




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