Date   

Mach2 stuck in a slew while parked (APCC Pro)

Luca Marinelli
 

I had an unusual situation appear last night while imaging unattended with the Mach2. At 4:20am, SGP issued a slew command to a new target and the mount started slewing. However, when I got up and checked the status, I found the APCC status window as in the screenshot below: the SLEW indicator was flashing but the mount was parked.  the slew never completed and SGP was still waiting for the mount to confirm that it had completed the slew.

APCC and AP ASCOM logs: https://www.dropbox.com/s/y630iv98br4o1sz/ApccZip-Luca_Marinelli-2021-06-10-063708.zip?dl=0

I don't know if it's relevant, but given the previous conflicts when I used the Mach2 with APCC on a computer that had previously been setup for a Mach1 I'll mention it. I swapped piers and the Mach2 is now connected with the computer that was previously running APCC with a AP1100 without encoders. I have setup Meridian limits, I deleted the old horizon limit file and setup a new one but I did not start with a fresh APCC installation.

thanks,

Luca


Re: Photo Notifications #photo-notice

Harley Davidson
 

Thanks Mike! I just can't control Moose :)

tony

On 6/8/2021 11:57 AM, M Hambrick wrote:
Way to go Tony !! Good pictures.

Moose is already pretty famous. Charlie is less so, but he is more respectful of the hat :>)

Mike 


Re: ASCOM v2 driver #ASCOM_V2_Driver

George Vlazny
 

All sorted, I set the jog scope to 90deg/min and speed to 1200x and now works. Seems movement was set to slow to be noticed. 

Thanks 


Help phd2 900 gto

vincent.visonneau
 

Hi

For the first time, i try to do a phd2 routine for my old ap 900 gto (with an asi224 and taka 102FS ota), is the result normal or not, orthogonality graph seems to be non orthogonal, it is strange or not?

I don't kwon who i can interpret the result?

Regards

Vincent from france


Re: Levelling 119FSA for AP1100 RA base

 

If the mount is off level, it makes a small difference. Shailesh’s pier is only off by less than a degree, so his RAPAS will still be pretty accurate. I just ran the numbers and if the RAPAS reticle is off level by 1 degree, aligning would result in a .7 arcmin error max from the misalignment alone. Not enough to cause a significant error, or be noticeable over the alignment error caused by human eyes using the RAPAS.  If the pier was off by 5 or 6 degrees there would be more concerns than just the RAPAS.

 

Liam

 

From: main@ap-gto.groups.io <main@ap-gto.groups.io> On Behalf Of Peter Nagy
Sent: Tuesday, June 8, 2021 3:58 PM
To: main@ap-gto.groups.io
Subject: Re: [ap-gto] Levelling 119FSA for AP1100 RA base

 

If you are using RAPAS, shouldn’t the mount be level in East-West direction?

Peter 


Re: Levelling 119FSA for AP1100 RA base

Shailesh Trivedi
 

Thank you Rolando. No shims.

Shailesh


Re: Levelling 119FSA for AP1100 RA base

Peter Nagy
 

If you are using RAPAS, shouldn’t the mount be level in East-West direction?

Peter 


Re: Levelling 119FSA for AP1100 RA base

Christopher Erickson
 

Being reasonably-level when setting up a tripod or portable pier is good for safety reasons, of course.


-Christopher Erickson
Observatory engineer
Waikoloa, HI 96738
www.summitkinetics.com
   

On Tue, Jun 8, 2021, 10:33 AM Roland Christen via groups.io <chris1011=aol.com@groups.io> wrote:
German equatorial mounts do not need to be level. They just need to be polar aligned, which does not require leveling.

Rolando



-----Original Message-----
From: Shailesh Trivedi <strivedi@...>
To: main@ap-gto.groups.io
Sent: Tue, Jun 8, 2021 9:21 am
Subject: [ap-gto] Levelling 119FSA for AP1100 RA base

I am trying to mount my AP1100 GTO AE to a permanent non-AP pier for the first time.

The bubble level is a bit off-center (see attached image).

Is this a concern? Should I put shims under the 119FSA to try to center the bubble? My application is astrophotography.

Shailesh

--
Roland Christen
Astro-Physics


Re: Levelling 119FSA for AP1100 RA base

Roland Christen
 


The only option I have is to put shims under the 119FSA.
Don't do that! You want stability, not level.

Rolando


-----Original Message-----
From: Shailesh Trivedi <strivedi@...>
To: main@ap-gto.groups.io
Sent: Tue, Jun 8, 2021 11:21 am
Subject: Re: [ap-gto] Levelling 119FSA for AP1100 RA base

Thanks for your feedback Mike. I do not have such a method. The only option I have is to put shims under the 119FSA.

Shailesh

--
Roland Christen
Astro-Physics


Re: Levelling 119FSA for AP1100 RA base

Roland Christen
 

German equatorial mounts do not need to be level. They just need to be polar aligned, which does not require leveling.

Rolando



-----Original Message-----
From: Shailesh Trivedi <strivedi@...>
To: main@ap-gto.groups.io
Sent: Tue, Jun 8, 2021 9:21 am
Subject: [ap-gto] Levelling 119FSA for AP1100 RA base

I am trying to mount my AP1100 GTO AE to a permanent non-AP pier for the first time.

The bubble level is a bit off-center (see attached image).

Is this a concern? Should I put shims under the 119FSA to try to center the bubble? My application is astrophotography.

Shailesh

--
Roland Christen
Astro-Physics


Re: Adding Primaluce Labs ECCO2 for Environmental sensor?

Brent Boshart
 

Thanks Bryan.  You are absolutely right, I totally missed that.  I was using weather website reporting which must be sea level.  I found a calculation that uses altitude and temperature, then the pressure reading on the ECCO2 is bang on. 


Re: Levelling 119FSA for AP1100 RA base

Shailesh Trivedi
 

Thank you, Chris and Bryan. I got similar feedback from George at AP who also said do NOT put shims to level; perhaps some iterations needed for PA but I have to do that anyway.

Shailesh


Re: Levelling 119FSA for AP1100 RA base

Worsel
 

I recall Rod Mollise once said 'you can mount an equatorial on the side of a barn as long as the polar alignment is good.'

Bryan


Re: Adding Primaluce Labs ECCO2 for Environmental sensor?

Worsel
 

You can find station pressure and airport pressure with the following  link

https://www.wrh.noaa.gov/mesowest/timeseries.php?sid=Kxxx

where xxx is the FAA code for the whatever airport you want.

Bryan


Re: Adding Primaluce Labs ECCO2 for Environmental sensor?

Worsel
 

Brent

Are your 'multiple source' based on airport readings?  Airports correct their readings to pressure at sea level, the reference standard to which pilots set their altimeters.

Example: western Colorado (right now).  Airport pressure for altimeters = 1009, Station pressure (actual) = 817  (Elevation = 1745m)

Bryan


Re: Levelling 119FSA for AP1100 RA base

Christopher Erickson
 

Absolutely not a concern.


-Christopher Erickson
Observatory engineer
Waikoloa, HI 96738
www.summitkinetics.com
   

On Tue, Jun 8, 2021, 4:21 AM Shailesh Trivedi <strivedi@...> wrote:
I am trying to mount my AP1100 GTO AE to a permanent non-AP pier for the first time.

The bubble level is a bit off-center (see attached image).

Is this a concern? Should I put shims under the 119FSA to try to center the bubble? My application is astrophotography.

Shailesh


Re: Question about the Adapter for the Losmandy polar scope.

Ron Yates
 

Thanks.  I contacted AP today, and they told me about the threaded adapter.  Just ordered it.

Ronnie Yates.


On Tue, Jun 8, 2021 at 7:53 AM Robert <rwatters65@...> wrote:
You'll need part # M4037 in addition to the Q8140 you already have.  I believe this originally came with the mount so someone must have removed it somewhere along the years.
M4037 will thread into the shaft end of the 1200 and then the Q8140/polarscope combo will thread into that.

Robert


Re: Levelling 119FSA for AP1100 RA base

Shailesh Trivedi
 

Thanks for your feedback Mike. I do not have such a method. The only option I have is to put shims under the 119FSA.

Shailesh


Re: Photo Notifications #photo-notice

M Hambrick
 

Way to go Tony !! Good pictures.

Moose is already pretty famous. Charlie is less so, but he is more respectful of the hat :>)

Mike 


Re: Levelling 119FSA for AP1100 RA base

Mike Dodd
 

On 6/8/2021 10:21 AM, Shailesh Trivedi wrote:
I am trying to mount my AP1100 GTO AE to a permanent non-AP pier for the
first time.

The bubble level is a bit off-center (see attached image).
How is the mount attached to the pier? I cast a concrete pier, then bolted an A-P SPA Standard Pier Adapter to four 5/8" threaded rods embedded in the concrete. I put nuts on the rods to allow me to adjust the level of the SPA. This photo shows the setup: <http://astronomy.mdodd.com/observatory.html#PierBolts>

Can you do something similar?

--- Mike

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