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INDI Library v1.8.5 Released (19 Apr 2020)

April 2020 release of INDI Library v1.8.5 introduces new drivers while providing fixes and improvements to existing devices and core framework.

Meridian Flip Configuration

2 months 1 week ago
sterne-jaeger
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Meridian Flip Configuration #51334
Hi Niki,
right, I am native German. But I think, for a broader audience we should stay with English.

I'll send you my email address by PN, then we could continue to talk in German :-)

- Wolfgang

TSA-120 + FSQ-85 + GSO 150/750 | Avalon Linear + M-zero | Moravian G2-8300 + ASI 1600mm pro + ASI 294mc pro | KStars/INDI on Raspberry Pi 4 with Raspbian 10
The following user(s) said Thank You tcm75

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2 months 1 week ago
DerPit
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Meridian Flip Configuration #51376
Any news here? IMO the issue is not caused by the meridian flip in itself. I had the same problem [1] yesterday when pointing to a new target on the other side of the meridian. The slew ended up some 50⁰ away from the intended position (and the telescope marker in the sky view was on the target I clicked on). No debug active, and the plain kstars log doesn't tell much. But something's messed up in the pointing/model system....

[1] https://indilib.org/forum/ekos/6671-telescope-pointer-points-not-where-the-telescope-looks-when-flipping.html

openSUSE Tumbleweed KStars git INDI git
GPDX+EQMOD, CEM60EC, ASI1600+EFW+EAF+ASI290 mini

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2 months 1 week ago
sterne-jaeger
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Meridian Flip Configuration #51390
No new results so far. It might be either a specific style to use Kstars/EKOS or a driver problem.
I found a strange thing in Niki‘s logs. The last slew to a target and the target the MF uses for flipping differ! This might be also the case with your situation.
Could you please elaborate what you exactly did - and post your log?

-Wolfgang

TSA-120 + FSQ-85 + GSO 150/750 | Avalon Linear + M-zero | Moravian G2-8300 + ASI 1600mm pro + ASI 294mc pro | KStars/INDI on Raspberry Pi 4 with Raspbian 10

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2 months 1 week ago
DerPit
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Meridian Flip Configuration #51395
(side note: I just clicked 'goto editor' after having already typed a lot of text, because I wanted to attach something. All typed text was deleted. this sucks!)

It is a problem that has never occurred to me before, and except for installing current versions of everything I didn't change something, neither in setup nor in ways of using things.

As mentioned in the linked thread, I had imaged (without issues) for a few hours, all on the east hemisphere. I had started from home position, and the first goto was spot-on.
I then focused another target (on the west hemisphere), clicked 'goto target' in kstars sky view, and once it had gone there I went to align tab and went for 'slew to target'. The sky marker was on the selected target (Antennae galaxies), but solving failed. So almost identical to the reported meridian flip issues, just that it wasn't MF, but 'only' a normal goto target on the other side.
After solving failed, I recorded a frame to disk, and externally blind solved it. This succeeded, but the reported coordinates were 50 degrees off, with positive instead of negative declination values (not just a sign error, but generally on the wrong side). I think I also tried a 'load and slew' with this image, and also slewed (using kstars sky view) to a close-by bright star to see if that is in the FOV. I also stored an image there, and that also solved to a location close to the first one.
Both of those (wrong) coordinates were relatively close to the target that I had imaged in the beginning - not sure if that is by accident, or part of the issue.
But the whole pointing model of the mount was completely off after this. When I told the mount to go to home position it was pointing somewhere in the wild (photo in the mentioned thread).
Log is attached. The relevant stuff starts 2020-03-29T02:10:24.399, but as I said, no debug active, so it's not too informative other than confirming the mismatch of actual and reported coordinates...

Oh wait - I just realize that this was just after switch to summer time. But how would that lead to pointing on the wrong side of the equator!?

openSUSE Tumbleweed KStars git INDI git
GPDX+EQMOD, CEM60EC, ASI1600+EFW+EAF+ASI290 mini
Attachments:

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2 months 1 week ago
universalmaster
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Meridian Flip Configuration #51407
Not sure it is the same issue, but I have experienced many times that when I click go-to I kstars, the mount goes somewhere else (often close by) and the pointer in kstars does not end up where I clicked. After clicking go-to again the mount either moves almost nowhere as it is already there (but infact somewhere else close by) or it goes to the correct taget. Seems like kstars and Indi are not completely synced or something. Since it eventually works correctly after a few tries, I currently have no debug logs to post.

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2 months 1 week ago
tcm75
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Meridian Flip Configuration #51408
Universalmaster, could you verify that this happens on the Pierside east pointing west only? maybe?
Because thats exactly what happens to me.

Not able to try around because of wheather conditions atm...

greets
Niki

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2 months 1 week ago
universalmaster
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Meridian Flip Configuration #51409
I actually can not remember, so I can neither confirm nor deny that statement :-)

I'm at summer time now, so the season may be close to over here and I'm not sure I will be able to test it further. But i has happened many times and with different version of kstars/indi. I have been using the development version the last few months, if that matters....

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2 months 6 days ago
sterne-jaeger
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Meridian Flip Configuration #51449
Pit, it sounds like there is a problem with the pointing model. This matches to the situation that Niki reported here .

Since the problem does not occur with my Avalon mount, it seems to be specific for some mounts.

- Wolfgang

TSA-120 + FSQ-85 + GSO 150/750 | Avalon Linear + M-zero | Moravian G2-8300 + ASI 1600mm pro + ASI 294mc pro | KStars/INDI on Raspberry Pi 4 with Raspbian 10

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2 months 6 days ago 2 months 6 days ago by wvreeven.
wvreeven
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Meridian Flip Configuration #51453
In the KStars settings under Ekos -> Capture is an option "Reset Mount Model After Meridian Flip". Perhaps it helps to enable that?


Wouter

ASI1600MM-Pro Cooled and filter wheel with a SkyWatcher Esprit 80 ED on a SkyWatcher HEQ5-Pro
ASI1600MM-Pro Cooled and filter wheel with an 8" TS Ritchey-Chrétien on a SkyWatcher EQ6-R

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2 months 6 days ago
DerPit
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Meridian Flip Configuration #51454
Yes, I agree. But it definitely is a new one, I have not ever seen it last year, only now. And there had been no changes to the driver side (ieq).
I read some commit logs mentioning pier side info for mounts that don't have it native (like my CEM60). Could it be related to that, or maybe some change in an xml file that wasn't updated properly in our config directory?
I had intended to investigate this further, but they have now put our observatory in LockDown, and I no longer can access my equipment for the next 2-4 weeks :((

openSUSE Tumbleweed KStars git INDI git
GPDX+EQMOD, CEM60EC, ASI1600+EFW+EAF+ASI290 mini

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2 months 6 days ago
DerPit
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Meridian Flip Configuration #51455

wvreeven wrote: In the KStars settings under Ekos -> Capture is an option "Reset Mount Model After Meridian Flip". Perhaps it helps to enable that?


I somehow doubt it, at least in my case there was no meridian flip involved at all, it was a plain slew to target....

openSUSE Tumbleweed KStars git INDI git
GPDX+EQMOD, CEM60EC, ASI1600+EFW+EAF+ASI290 mini

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2 months 6 days ago
wvreeven
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Meridian Flip Configuration #51457

DerPit wrote: I somehow doubt it, at least in my case there was no meridian flip involved at all, it was a plain slew to target....


Perhas clear the mount model manually before doing the slew? Sorry, I haven't followed the whole discussion. Does this happen from the first slew on or does it start to happen after a few slews?

ASI1600MM-Pro Cooled and filter wheel with a SkyWatcher Esprit 80 ED on a SkyWatcher HEQ5-Pro
ASI1600MM-Pro Cooled and filter wheel with an 8" TS Ritchey-Chrétien on a SkyWatcher EQ6-R

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