Re: 1100GTO DEC. Axis issues


Sep 14, 2014

 


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#45060 Sep 14, 2014

Hi All,

My problem, I have set up my 1100GTO in my Apartment to test it out.First I set it in Park 1 position by hand, Scope on west side facing North nice and parallel to the groundpower up the mount enter the Date/Time(24 Hour format), location and my UTC offset, Press goto then takes me the next menu. I power down, power up, Select 1 for location. I next press Resume Ref-Park 1, I then send it to park1 again to verify it knows it's in park 1. send it to park 2, Counter weight shaft is straight up and down, But Scope is about 5 degrees off, Send it to park 3, RA doesn't move but Dec axis goes toward North but stops about 5 Degrees to the west of Meridian. I live in Korea, So that would put me in the Eastern Hemisphere and My UTC offset is +09 Hrs. Has anyone have to deal with this issue? and how can this be corrected?

Thanks in advance and Clear Skies,

Fred 



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#45061 Sep 14, 2014

I am not sure if this will help but does Korea have Daylight Savings Time? If so, then you may have to set your hand controller to DST if you have not set it.

Peter

---In ap-gto@yahoogroups.com, frobi6852@...> wrote :

Hi All,

My problem, I have set up my 1100GTO in my Apartment to test it out.First I set it in Park 1 position by hand, Scope on west side facing North nice and parallel to the groundpower up the mount enter the Date/Time(24 Hour format), location and my UTC offset, Press goto then takes me the next menu. I power down, power up, Select 1 for location. I next press Resume Ref-Park 1, I then send it to park1 again to verify it knows it's in park 1. send it to park 2, Counter weight shaft is straight up and down, But Scope is about 5 degrees off, Send it to park 3, RA doesn't move but Dec axis goes toward North but stops about 5 Degrees to the west of Meridian. I live in Korea, So that would put me in the Eastern Hemisphere and My UTC offset is +09 Hrs. Has anyone have to deal with this issue? and how can this be corrected?

Thanks in advance and Clear Skies,

Fred 



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#45063 Sep 14, 2014

Hi Fred,

I am going to assume you have not yet done a polar alignment or used the mount under dark sky so I think what you are seeing may be caused by incorrect physical latitude setting of your new mount for your location. In order to do the test successfully, you may need to polar align the mount. You can do that indoors by following the "Polar Aligning in the Daytime" as described in GTO Keypad Version 4.12 manual on page 23. I wouldn't worry about step 5 for azimuth adjustment. Once you get the Daytime Polar Alignment done, then your test as you described in your original post may work. Make sure you enter your Latitude/Longitude correctly in hand controller.

Did you do the test with the scope mounted and the mount balanced?

I also have A-P1100GTO mount and it has performed flawlessly for me.

Peter

---In ap-gto@yahoogroups.com, frobi6852@...> wrote :

Hi All,

My problem, I have set up my 1100GTO in my Apartment to test it out.First I set it in Park 1 position by hand, Scope on west side facing North nice and parallel to the groundpower up the mount enter the Date/Time(24 Hour format), location and my UTC offset, Press goto then takes me the next menu. I power down, power up, Select 1 for location. I next press Resume Ref-Park 1, I then send it to park1 again to verify it knows it's in park 1. send it to park 2, Counter weight shaft is straight up and down, But Scope is about 5 degrees off, Send it to park 3, RA doesn't move but Dec axis goes toward North but stops about 5 Degrees to the west of Meridian. I live in Korea, So that would put me in the Eastern Hemisphere and My UTC offset is +09 Hrs. Has anyone have to deal with this issue? and how can this be corrected?

Thanks in advance and Clear Skies,

Fred 



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#45066 Sep 15, 2014

Your scope is not off in RA because counterweight shaft is straight up and down, so you have entered the correct time. Therefore I assume that your scope is off in Declination by 5 degrees. This suggests that either you do not have your altitude axis set correctly for your latitude (or perhaps you have entered the wrong latitude for your location).  By the way, this is one of the ways that you can set your polar alignment in the daytime by using the two park positions. It is all explained in the manual under daytime polar alignment. It is the method that I use when setting up my mount at a star party in another location far from home. Rolando  -----Original Message-----

From: frobi6852@... [ap-gto] ap-gto@yahoogroups.com>

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

Sent: Sun, Sep 14, 2014 12:47 pm

Subject: [ap-gto] 1100GTO DEC. Axis issues





Hi All,



My problem, I have set up my 1100GTO in my Apartment to test it out.First I set it in Park 1 position by hand, Scope on west side facing North nice and parallel to the groundpower up the mount enter the Date/Time(24 Hour format), location and my UTC offset, Press goto then takes me the next menu. I power down, power up, Select 1 for location. I next press Resume Ref-Park 1, I then send it to park1 again to verify it knows it's in park 1. send it to park 2, Counter weight shaft is straight up and down, But Scope is about 5 degrees off, Send it to park 3, RA doesn't move but Dec axis goes toward North but stops about 5 Degrees to the west of Meridian. I live in Korea, So that would put me in the Eastern Hemisphere and My UTC offset is +09 Hrs. Has anyone have to deal with this issue? and how can this be corrected?



Thanks in advance and Clear Skies,



Fred 



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#45067 Sep 15, 2014

His counterweight is straight up and down, that should give you the clue needed to determine that the time, date and location were entered correctly. 1 hour = 15 degrees, not 5 degrees, and a 5 degree offset in declination is ALWAYS due to altitude axis being set wrong. Mechanical setting of the altitude axis, has zero to do with any electronics. Go to the manual and check out the instructions for setting a mount up in the daytime. You actually use this error to set the mount's altitude axis via the Park 1 - Park 2 routine. Rolando  -----Original Message-----

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

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

Sent: Sun, Sep 14, 2014 1:38 pm

Subject: [ap-gto] Re: 1100GTO DEC. Axis issues





I am not sure if this will help but does Korea have Daylight Savings Time? If so, then you may have to set your hand controller to DST if you have not set it.



Peter



---In ap-gto@yahoogroups.com, frobi6852@...> wrote :

Hi All,



My problem, I have set up my 1100GTO in my Apartment to test it out.First I set it in Park 1 position by hand, Scope on west side facing North nice and parallel to the groundpower up the mount enter the Date/Time(24 Hour format), location and my UTC offset, Press goto then takes me the next menu. I power down, power up, Select 1 for location. I next press Resume Ref-Park 1, I then send it to park1 again to verify it knows it's in park 1. send it to park 2, Counter weight shaft is straight up and down, But Scope is about 5 degrees off, Send it to park 3, RA doesn't move but Dec axis goes toward North but stops about 5 Degrees to the west of Meridian. I live in Korea, So that would put me in the Eastern Hemisphere and My UTC offset is +09 Hrs. Has anyone have to deal with this issue? and how can this be corrected?



Thanks in advance and Clear Skies,



Fred 







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#45068 Sep 15, 2014

Problem Solved.

Thanks Rolando for pointing out the Altitude Axis being off, For some reason it was set at 27 degrees and not to 37 degrees. I was so sure of myself that this is the only setting that I did not double check, I guess I'll have to color the degree marks so it's easier to read.

Thanks and clear skies,

Fred  


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