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I was resetting the worm mesh on my G11 (I‘d been getting RA stalls) and during testing I hit the RA safety limit.?? My problem is that I couldn’t use the arrow keys on the HC to move the mount after that.? Surely I should be able to move out of the limit? ? What am I missing? ? David ?
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I have had that (albeit rarely) and usually when it was approaching a meridian flip - odd because it handles flips 99.9% of the time. I usually tell it to park at CWD and then goto the target again - which it did on the other mount side.
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Sorry it is not an answer to why but maybe a workaround in a blocked situation.
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Ken
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On Sun, Mar 2, 2025 at 08:50 AM, David C. Partridge wrote:
I was resetting the worm mesh on my G11 (I‘d been getting RA stalls) and during testing I hit the RA safety limit.?? My problem is that I couldn’t use the arrow keys on the HC to move the mount after that.? Surely I should be able to move out of the limit?
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What am I missing?
Hi David,
I've not had that happen to me. Were you trying to use the touch-screen or the physical buttons? Did you try the ASCOM driver virtual HC buttons? Does it happen every time you hit a safety limit or occasionally?
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The one thing that could explain it is if the mount somehow reached your hard servo firmware-imposed limit to stop the mount from rotating a full 360 degrees.
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On Sun, Mar 2, 2025 at 11:11 AM, Oberon510 wrote:
I have had that (albeit rarely) and usually when it was approaching a meridian flip - odd because it handles flips 99.9% of the time. I usually tell it to park at CWD and then goto the target again - which it did on the other mount side.
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Sorry it is not an answer to why but maybe a workaround in a blocked situation.
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Ken
Ken, be careful when using automation software -- it's entirely possible that a command was sent to Gemini put in a park state while waiting for the meridian crossing to do a flip. Gemini has multiple park states, and some of these prevent the mount from moving with HC until the mount is unparked.
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paul,
I don’t know about the original poster, but i can attest to my experience. Every time i hit a safety limit i am unable to move it without going cwd first. which makes setting new limits difficult if not impossible without manually changing to a much bigger range then setting a new limit by slewing.
I have not tried using the virtual HC buttons for this, but i have used them for other things, and there is usually a lag between me hitting stop or letting go and the mount following. Does not matter if it’s usb or ethernet same behavior. so i dont use that for safety limits.
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On Mar 2, 2025, at 10:33?AM, Paul Kanevsky via groups.io <yh@...> wrote:
? On Sun, Mar 2, 2025 at 08:50 AM, David C. Partridge wrote:
I was resetting the worm mesh on my G11 (I‘d been getting RA stalls) and during testing I hit the RA safety limit.?? My problem is that I couldn’t use the arrow keys on the HC to move the mount after that.? Surely I should be able to move out of the limit?
?
What am I missing?
Hi David,
I've not had that happen to me. Were you trying to use the touch-screen or the physical buttons? Did you try the ASCOM driver virtual HC buttons? Does it happen every time you hit a safety limit or occasionally?
?
The one thing that could explain it is if the mount somehow reached your hard servo firmware-imposed limit to stop the mount from rotating a full 360 degrees.
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On Sun, Mar 2, 2025 at 08:35 AM, Paul Kanevsky wrote:
Ken, be careful when using automation software -- it's entirely possible that a command was sent to Gemini put in a park state while waiting for the meridian crossing to do a flip. Gemini has multiple park states, and some of these prevent the mount from moving with HC until the mount is unparked.
Hi Paul - thanks and my situations were just during normal imaging sessions with a target that tracked into the mount limits. The HC and virtual HC buttons didn't work similar to what I think David is saying. At that stage I just use the HC to go park at CWD and then use the HC to go to the target again - no automation software is involved (same as Ryan does).
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Hope that clarifies a little more.
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Ken
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On Sun, Mar 2, 2025 at 11:38 AM, Ryan wrote:
paul,
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I don’t know about the original poster, but i can attest to my experience. Every time i hit a safety limit i am unable to move it without going cwd first. which makes setting new limits difficult if not impossible without manually changing to a much bigger range then setting a new limit by slewing.
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I have not tried using the virtual HC buttons for this, but i have used them for other things, and there is usually a lag between me hitting stop or letting go and the mount following. Does not matter if it’s usb or ethernet same behavior. so i dont use that for safety limits.
Strange, as I seem to be able to use both, the tactile buttons in the back and the touch-screen buttons in the front to move out of the safety limit. Going past the safety limit works at centering speed, to avoid accidental collision with the mount. I just tested this three times with mount restarts in between... I wonder if there's some other setting that affects this behavior that I don't have?
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On Sun, Mar 2, 2025 at 12:29 PM, Paul Kanevsky wrote:
Strange, as I seem to be able to use both, the tactile buttons in the back and the touch-screen buttons in the front to move out of the safety limit. Going past the safety limit works at centering speed, to avoid accidental collision with the mount. I just tested this three times with mount restarts in between... I wonder if there's some other setting that affects this behavior that I don't have?
Yes strange but it only happens to me occasionally (rarely) in these situations. Next time I will get some logs and some supporting docs.
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Ken
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On Sun, Mar 2, 2025 at 03:40 PM, Oberon510 wrote:
Yes strange but it only happens to me occasionally (rarely) in these situations. Next time I will get some logs and some supporting docs.
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Kenn
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So sometimes the buttons work at the safety limit and at other times they don’t? Try to pay attention next time what might be different between these scenarios. Maybe we can find a way to reproduce this.
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I hope this is not too dumb a suggestion so bear with me. If the mount was guiding when it hit the safety limit then the speed was likely set to guide rate. Trying to move the scope away from the limit at that speed is kinda tedious, it will look like nothing is happening. Just make sure you change the speed manually to something faster, like slew or move.?
I haven’t had this issue but, then again, I’m still at level 5 so maybe there is a difference with level 6?
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good luck
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The servo imposed limit is written so you should always be able to back out of the limit. ? ??? // ??? // If the position counter is outside the valid range only allow steps ??? // that will move out of the forbidden zone. ??? // ??? bool direction = GetDirection(); ??? if (!checkLimits || ??????? ((posCount < lowerLimit && direction) || ???????? (posCount > upperLimit && !direction)) || ??????? ((posCount >= lowerLimit) && (posCount <= upperLimit)) ?????? ) ??? {?? ? I was using the touch screen diamonds, but I seem to remember that I also tried the physical buttons. ? Daivd ?
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From: [email protected] <[email protected]> On Behalf Of Paul Kanevsky
Sent: 02 March 2025 16:34
To: [email protected]
Subject: Re: [Gemini-II_io] Hit RA Safety limit and couldn't move away from it.? On Sun, Mar 2, 2025 at 08:50 AM, David C. Partridge wrote: I was resetting the worm mesh on my G11 (I‘d been getting RA stalls) and during testing I hit the RA safety limit.?? My problem is that I couldn’t use the arrow keys on the HC to move the mount after that.? Surely I should be able to move out of the limit? ? What am I missing?
Hi David,
I've not had that happen to me. Were you trying to use the touch-screen or the physical buttons? Did you try the ASCOM driver virtual HC buttons? Does it happen every time you hit a safety limit or occasionally?
? The one thing that could explain it is if the mount somehow reached your hard servo firmware-imposed limit to stop the mount from rotating a full 360 degrees.
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On Mon, Mar 3, 2025 at 03:22 AM, David C. Partridge wrote:
The servo imposed limit is written so you should always be able to back out of the limit.
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Yeah, it sounds like something else is going on. I've not been able to reproduce this, but others have. Something that Rene may need to look into.
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Regards,
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? -Paul
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My first thought is something I do a lot. Check to see if you are still in guiding mode.
Anybody in earshot must wonder about me chuckling at myself in the dark when my mount doesn't move for me.
Then I realize it is in slow motion.
Welcome to the human race.... LOL!
--
Sonny Edmonds
GM811G HD
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i have tried this before, i can hear the gear enhance, but it doesn’t go anywhere.?
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On Mar 8, 2025, at 11:12?AM, Sonny Edmonds via groups.io <pedmondsjr@...> wrote:
? My first thought is something I do a lot. Check to see if you are still in guiding mode.
Anybody in earshot must wonder about me chuckling at myself in the dark when my mount doesn't move for me.
Then I realize it is in slow motion.
Welcome to the human race.... LOL!
--
Sonny Edmonds
GM811G HD
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David C. Partridge
Paul Kanevsky
Ryan
Sonny Edmonds