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>>>Look at the Model settings in Gemini.net, using the Advanced panel Model area. You will find they remain all zero value after the first Align to Bright star is done.

I just did this using the hand controller and Gemini II definitely updates HA and DEC Index errors to non-zero values on first alignment after cold start

So it sounds like Gemini I may work differently than Gemini II

On Tue, Aug 25, 2020 at 11:53 AM Michael Herman <mherman346@...> wrote:

Hi Brian,

Look at the Model settings in Gemini.net, using the Advanced panel Model area.?

You will find they remain all zero value after the first Align to Bright star is done.? Therefore it is a Synch.? Only after the 2nd align star is done do you see the Model parameters move off zero.??

Yes, that is what I observe from my Gemini-1 work.? I don't yet own a G-2.? The company software engineer would know if that code changed ... you would be in the best position to seek that.??

All the best,

Michael

On Tue, Aug 25, 2020, 11:38 AM Brian Valente <bvalente@...> wrote:

>>Note that first Align to Bright Star does not actually change any Model setting from zero value.? That first Alignment only sets the encoder positions to the Gemini...really it is doing a Synch.

Michael - is that how it works on Gemini I??

i just tested this on Gemini II and the first align gives me a DEC and RA offset, which is what I expected

On Tue, Aug 25, 2020 at 11:25 AM Michael Herman <mherman346@...> wrote:

Hi Ron,

Like Jamey just said, when I have some pointing trouble, I do a Park at CWD, then shut off the Gemini power.

Then I set up the CWD position:??

I loosen the RA clutch.? I then use a "torpedo" bubble level, to?put the counterweight bar horizontal, getting that level, moving the RA setting circles to something convenient, then rotating?back 90 degrees to get the counterweight bar vertical again.? ?I then retighten the RA clutch knob.

Then I loosen the DEC clutch knob, and rotate the scope to be horizontal.? Then use the level to get the dovetail level, then use the setting circles again to move that back to CWD position pointing the scope toward Polaris.? Then retighten the DEC axis.

Then I power back on the Gemini using a Cold Boot.? That erases all possibly messed up Model values back to zero.? Then I double check the UTC time and location information.? At that point, my GoTos are normally quite accurate.? I then do a 1 star Alignment.

Note that first Align to Bright Star does not actually change any Model setting from zero value.? That first Alignment only sets the encoder positions to the Gemini...really it is doing a Synch.

You can then Add Align points if you wish.

Give that a try.

I would not leave the Gemini powered on all the time, it is not necessary from the way it was designed, using the internal RTC device to keep the time counted, and using the SRAM to keep the location and other information in storage.??

Some other ideas to evaluate:?

?

I have not tried Park at Custom point, which I think is what you are doing to park with the counterweights horizontal.? In theory it should work.??

However, I would do the?Cold Boot with the Gemini not connected to the PC/laptop.? I would check to see if Gemini.net has "set Time/Date on Connect" checked off, and uncheck that.? I suggest you try and see if somehow those in Gemini.net are somehow? over-riding the internal Gemini settings, and messing up your Park/Unpark operation.? These are just some thoughts, but worth a few quick experiments to see if that PC to Gemini interaction might be causing trouble.??

Best of luck,

Michael

On Tue, Aug 25, 2020 at 10:50 AM Jamey Jenkins <jameyljenkins@...> wrote:

I do a cold start with CWD every time and do a modeling. Pier mounted too...

Jamey

On Tue, Aug 25, 2020, 1:31 PM Rappnron via <Rappnron=[email protected]> wrote:

I have now have a ROR for my G 11 G on Its tripod And I am having problems with restarting Gemini 2 back on
My problem is when I restart I am not getting a good initial goto
so my question is - what is the best way to shut down and restart?
so far my technique has been move to the park position which is RA and dec horizontal and then I shut off electricity. But when I return I do a warm start never seems to be pointing at the correct target?
What is the correct workflow ?
Should I leave the mount turned on All of the time instead??
Any other suggestions?
what are you guys doing?
Ron

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Michael Herman
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email: mherman346@...

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Brian?

Brian Valente

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Brian?

Brian Valente

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