RE: [ap-gto] 1100AE Pier Strike! Damage?


Oct 15, 2017

 


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#58987 Oct 15, 2017

Hello. BTW, hate the search function on Yahoo Groups! I know this has been discussed. Even searched the 1100AE manual but didn't come up with anything. But I digress...

I was conducting some mount tests last night, syncing with my dome, etcetera. Well, I got to watching a movie (Meatballs?) and then went to bed with the observatory still running. Since I had APCC Homing/Limits set to "stop slew and tracking" when limit reached, I didn't have any concerns. Except I didn't have it set that way, it was set to "just warn". So the mount sailed right through my limits...

So this morning I wake up to the telescope looking like Drew in Deliverance after they found him dead in the Cahulawassee. Counterweights up and the scope mounting plate all contorted into the pier. Nary a scratch to anything, so I am assuming it just stalled out, with no damage right? Right? Basically, it started tracking from Park 4 and then hit the pier on the other side. I reparked, and it dutifully went back to proper Park 4. 

Did I do any internal damage?

Chris 



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#58988 Oct 15, 2017

"Did I do any internal damage?"



No, you did nothing. As soon as the motor stalled, the CP4 cut power and stopped the motor from tracking any further.



Rolando







-----Original Message-----

From: chris@... [ap-gto] ap-gto@yahoogroups.com>

To: ap-gto ap-gto@yahoogroups.com>

Sent: Sun, Oct 15, 2017 1:47 pm

Subject: [ap-gto] 1100AE Pier Strike! Damage?





Hello. BTW, hate the search function on Yahoo Groups! I know this has been discussed. Even searched the 1100AE manual but didn't come up with anything. But I digress...



I was conducting some mount tests last night, syncing with my dome, etcetera. Well, I got to watching a movie (Meatballs?) and then went to bed with the observatory still running. Since I had APCC Homing/Limits set to "stop slew and tracking" when limit reached, I didn't have any concerns. Except I didn't have it set that way, it was set to "just warn". So the mount sailed right through my limits...



So this morning I wake up to the telescope looking like Drew in Deliverance after they found him dead in the Cahulawassee. Counterweights up and the scope mounting plateall contorted into the pier. Nary a scratch to anything, so I am assuming it just stalled out, with no damage right? Right? Basically, it started tracking from Park 4 and then hit the pier on the other side. I reparked, and it dutifully went back to proper Park 4. 



Did I do any internal damage?



Chris 



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#58990 Oct 15, 2017

Chris, That'swhat clutches are for!  And I'm sure they did theirjob. MyMach1 took a tumble once, scratched up the scope and some other things, but themount clutches did their job, slipped when they needed to, and no damage wasdone. Woody 

-----Original Message-----From:ap-gto@yahoogroups.com [mailto:ap-gto@yahoogroups.com] Sent:Sunday, October 15, 2017 11:47 AMTo:ap-gto@yahoogroups.comSubject: [ap-gto] 1100AE Pier Strike!Damage?

 Hello. BTW, hate the search function on Yahoo Groups! I know this hasbeen discussed. Even searched the 1100AE manual but didn't come up withanything. But I digress...

I was conducting some mount tests last night, syncing with my dome,etcetera. Well, I got to watching a movie (Meatballs?) and then went to bedwith the observatory still running. Since I had APCC Homing/Limits set to"stop slew and tracking" when limit reached, I didn't have any concerns.Except I didn't have it set that way, it was set to "just warn". So the mountsailed right through my limits...

So this morning I wake up to the telescope looking like Drew inDeliverance after they found him dead in the Cahulawassee.Counterweights up and the scope moun! ting plate all contorted into the pier.Nary a scratch to anything, so I am assuming it just stalled out, with nodamage right? Right? Basically, it started tracking from Park 4 and then hitthe pier on the other side. I reparked, and it dutifully went back to properPark 4. 

DidI do any internal damage?

Chris 



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#58992 Oct 15, 2017

Yes, Woody. I am reminded of Captain Pikes comment: "Careful with the ship, Spock, she's brand new...". Was afraid I may have put excessive wear on them. Anyway, after this issue, it seems the mount got lost. I did a basic manual Park 4 and got it back. I should know this, but does this sort of mount crash mess up the sync, like manually moving the scope via the clutches? CG



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#58993 Oct 15, 2017

Actually the mount clutches are somewhat irrelevant to amount crash.  If they are tight, the CP2/3/4 detects a motor stall and cutsmotor power.  If the clutches are a bit loose then the motor doesn't stalland the clutches slip instead. If you dump your mount over then having the clutches on thesofter side might limit damage to OTA's cameras and such. Maybe.  -Christopher EricksonObservatoryengineerSummit KineticsWaikoloa, HI 96738www.summitkinetics.com

 



From: ap-gto@yahoogroups.com[mailto:ap-gto@yahoogroups.com] Sent: Sunday, October 15, 2017 11:52AMTo: ap-gto@yahoogroups.comSubject: RE: [ap-gto] 1100AEPier Strike! Damage?



Chris, That'swhat clutches are for!  And I'm sure they did theirjob. MyMach1 took a tumble once, scratched up the scope and some other things, but themount clutches did their job, slipped when they needed to, and no damage wasdone. Woody 

-----Original Message-----From: ap-gto@yahoogroups.com[mailto:ap-gto@yahoogroups.com] Sent: Sunday, October 15, 201711:47 AMTo: ap-gto@yahoogroups.comSubject: [ap-gto]1100AE Pier Strike! Damage?

 Hello. BTW, hate the search function on Yahoo Groups! I know this hasbeen discussed. Even searched the 1100AE manual but didn't come up withanything. But I digress...

I was conducting some mount tests last night, syncing with my dome,etcetera. Well, I got to watching a movie (Meatballs?) and then went to bedwith the observatory still running. Since I had APCC Homing/Limits set to"stop slew and tracking" when limit reached, I didn't have any concerns.Except I didn't have it set that way, it was set to "just warn". So the mountsailed right through my limits...

So this morning I wake up to the telescope looking like Drew inDeliverance after they found him dead in the Cahulawassee.Counterweights up and the scope moun! ting plate all contorted into the pier.Nary a scratch to anything, so I am assuming it just stalled out, with nodamage right? Right? Basically, it started tracking from Park 4 and then hitthe pier on the other side. I reparked, and it dutifully went back to properPark 4. 

DidI do any internal damage?

Chris 





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