Date   

Re: AP1100 Play in Dec Axis #Guiding

Rouz
 

  • I tightened the 8 Dec and Ra bolts. they were pretty tight to begin with.
  •  
  • I then tightened the clutch knobs all the way down with an Allen key.
  •  
  • The gap on the dec axis no longer opened up and the Dec' plate was parallel  to the axis which is good news.
  •  
  • However, making a model (same points as before) showed the error to much worse.

I did change the camera configuration so the balance was off:

  1. I'm not sure if the balance being off caused such a larger error? (will rebalance and try again)
  2. Can I have overtightened the 8x bearing bolts?



Re: Mount Status in AP V2 ASCOM Driver Does Not Match APCC

Ray Gralak
 

Hi Mike,

As for memory, when all of my applications are running, I am using 4.99 GB out of 12 GB of my computer's RAM
capacity, and 260 GB of the 1 TB storage capacity If this were a problem, I would expect that you would have a lot
more people with the same issue.
The extra memory is not for applications but Windows file-caching. Every time Windows reads or writes a file, all or part of the file may be cached into a portion of *unused* memory. The more memory you have, the more caching can occur. But if there is not enough memory, file-caching can push out some operating system files that will need to be reread later, thus lowering performance.

I only have a short amount of time this morning, but I looked at your logs. There are on and off communications problems but the logs are not able to give a reason. I do not believe the driver and APCC logs are sufficient to determine your computer's particular hardware issues. Instead, you may want to look at the Windows Event Logs to see if there are any hardware issues. Do a web search for "Windows Event Viewer" for directions on how to do that.

While switching to a SSD might not be a bad idea, I would put it in the category of just swapping out hardware
hoping that it might solve a problem. I am not sure that I have the skills to do that anyway. That's why I said that it
might be a better idea to replace the laptop.
The VERY weakest link in your particular laptop is its spinning SATA hard drive. It is many times slower than an SSD. If you don't think you have the skills to replace the drive, maybe you can find a computer store local to you that can provide that service. They should be able to copy the entire drive, so you won't need to reinstall any applications.

You can also purchase a device that can copy the drives for you, but you may also need appropriate tools and directions to open the laptop and take out the hard drive, and later install the SSD.

-Ray


Re: APPM Model when changing camera

S Berrada
 

Thank you very much Ray


Re: APPM Model when changing camera

Ray Gralak
 

Hi Sam,

You could do a short APPM run of 10-20 points with the verify option enabled in APPM. This will indicate how well the other camera works with the other camera's model. There shouldn't be much difference if the cameras weigh about the same and the telescope's position in the rings is not moved.

-Ray

-----Original Message-----
From: main@ap-gto.groups.io [mailto:main@ap-gto.groups.io] On Behalf Of S Berrada
Sent: Thursday, April 21, 2022 5:28 AM
To: main@ap-gto.groups.io
Subject: Re: [ap-gto] APPM Model when changing camera

Mr Gralak,

I would appreciate any experience or thoughts about using the same pointing model when the camera is changed
on the same scope .
I realize that ideally one would want to redo the pointing model, but I wonder what the theory would say if the only
thing that changes is sensor size and pixel size (assume camera - scope connections are equally rigid).

thank you
Sam


Re: APPM Model when changing camera

S Berrada
 

Mr Gralak, 

I would appreciate any experience or thoughts about using the same pointing model when the camera is changed on the same scope .
I realize that ideally one would want to redo the pointing model, but I wonder what the theory would say if the only thing that changes is sensor size and pixel size (assume camera - scope connections are equally rigid).

thank you 
Sam 


Re: Mount Status in AP V2 ASCOM Driver Does Not Match APCC

M Hambrick
 

Hi Ray

As for memory, when all of my applications are running, I am using 4.99 GB out of 12 GB of my computer's RAM capacity, and 260 GB of the 1 TB storage capacity If this were a problem, I would expect that you would have a lot more people with the same issue.

While switching to a SSD might not be a bad idea, I would put it in the category of just swapping out hardware hoping that it might solve a problem. I am not sure that I have the skills to do that anyway. That's why I said that it might be a better idea to replace the laptop.

If you have any other suggestions for troubleshooting this issue, I would be interested in hearing them.

Mike


Re: OT: Solar Eclipse Video From Mars

Marcelo Figueroa
 

Truly amazing, thanks for sharing
 


Re: Unguided Imaging with a SCT

Christopher Erickson
 

There is only one way I have found to be able to run unguided SCT's on any mount, and that is by adding a Hyperstar. At f2.2, exposures are rather short.
Floating/flopping mirrors cause much less problems with shorter exposures. The super-wide-field is great for many objects but not so great for others. For planets, I go with video modes and short exposures so guiding isn't very critical there either.

When I'm not using a Hyperstar or shooting planets, I always use an off-axis guider. I would like to play with an on-axis guider someday but I haven't yet made the investment.

Piggyback guiders on SCT's and most other compound scopes just leads to tears.

"Always take the high road. There's less traffic."

-Christopher Erickson
Observatory Engineer
Summit Kinetics
Waikoloa, Hawaii


On Wed, Apr 20, 2022 at 1:06 PM Bruce Donzanti <donza2735@...> wrote:
I just found out that InnovationsForesight is working with NINA on a native integration


OT: Solar Eclipse Video From Mars

Dean Jacobsen
 

Not exactly on topic but this video is amazing.  Never thought I would see something like this:

https://arstechnica.com/science/2022/04/nasa-rover-captures-an-amazing-view-of-a-solar-eclipse-on-mars/

--
Dean Jacobsen
Astrobin Image Gallery - https://www.astrobin.com/users/deanjacobsen/


Re: Mount Status in AP V2 ASCOM Driver Does Not Match APCC

Ray Gralak
 

Mike,

If there is in fact a problem with this computer, it should be possible to at least identify what the problem. Just
saying that it is old is not an answer.
Are you asking me to find a hardware problem on your computer? I've given you a couple of suggestions on what you should do (replace hard drive with an SSD and add more memory). You could at least try those things first, as your computer definitely has some issues! :-)

-Ray


Re: Mount Status in AP V2 ASCOM Driver Does Not Match APCC

M Hambrick
 

Hi Ray

That (laptop replacement) is not likely to happen any time soon. And as for other issues, other than this one communication issue with these particular applications this laptop behaves perfectly.

If there is in fact a problem with this computer, it should be possible to at least identify what the problem. Just saying that it is old is not an answer.

When I read some of the suggestions from other users about what kind of laptop to look for, I was surprised at how many of the computers that were being suggested were using older generation processors than this one has.

Mike


Re: Mount Status in AP V2 ASCOM Driver Does Not Match APCC

Ray Gralak
 

Hi Mike,

If this is the same computer with the other issues then I would rather wait until you have a replacement computer.

-Ray

-----Original Message-----
From: main@ap-gto.groups.io [mailto:main@ap-gto.groups.io] On Behalf Of M Hambrick
Sent: Wednesday, April 20, 2022 3:36 PM
To: main@ap-gto.groups.io
Subject: Re: [ap-gto] Mount Status in AP V2 ASCOM Driver Does Not Match APCC

Hi Ray

Here is another weird occurrence from the other night. I was trying to connect the AP V2 Driver to the mount
through the virtual COM port in APCC. After some difficulty in getting connected I finally had APCC and the AP
V2 Driver connected. After several minutes I gave the command to park the mount from APCC. The screen shots
below shows what happened next:

In the first screen shot you can see from the APCC screen that both APCC and the AP V2 Driver show to be
connected, but if you look at the mount info windows in both it appears that the AP V2 Driver is totally locked up
and had been for some time.

In the second screen shot I have the window arranged so that you can see the comparison of the computer time
with the time shown in the AP V2 Driver. There is a 12 minute difference !

I have downloaded all the logs from this session, but I stopped and restarted the AP V2 driver many times, so I
need to try to look through them and give you the time stamp of the ones that might show this event.





Re: Unguided Imaging with a SCT

Bruce Donzanti
 

I just found out that InnovationsForesight is working with NINA on a native integration


Re: Mount Status in AP V2 ASCOM Driver Does Not Match APCC

M Hambrick
 

Hi Ray

Here is another weird occurrence from the other night. I was trying to connect the AP V2 Driver to the mount through the virtual COM port in APCC. After some difficulty in getting connected I finally had APCC and the AP V2 Driver connected. After several minutes I gave the command to park the mount from APCC. The screen shots below shows what happened next:

In the first screen shot you can see from the APCC screen that both APCC and the AP V2 Driver show to be connected, but if you look at the mount info windows in both it appears that the AP V2 Driver is totally locked up and had been for some time. 

In the second screen shot I have the window arranged so that you can see the comparison of the computer time with the time shown in the AP V2 Driver. There is a 12 minute difference !

I have downloaded all the logs from this session, but I stopped and restarted the AP V2 driver many times, so I need to try to look through them and give you the time stamp of the ones that might show this event.




Re: Help Needed with AP V2 Driver COM Port Settings

M Hambrick
 

Hi Brian

I usually click the "Now" button in the AP V2 window, which as I understand it does something similar to the Auto-Config, except as a discreet one-time command.

My setup routine is as follows:
  1. Power up the mount (Keypad is set to "external Connection"
  2. Launch APCC
  3. Connect the mount to APCC via the ethernet / IP address.  This is usually very quick.
  4. Click the "Now" button in the AP V2 Driver window. This will usually restart the driver
  5. Connect the AP V2 Driver through the Virtual COM Port
  6. After the AP-V2 Driver is connected I usually open up the Setup Telescope window and click on the Check Port button to make sure that the mount is there.
  7. Power up the cameras
  8. Launch MaxIm DL and connect the cameras
  9. While the cameras are cooling I will open the observatory control window in MaxIm and connect to the mount.

The other night I wanted to try connecting the AP V2 Driver dirrectly to the mount through the ethernet cable instead of through the virtual COM port in APCC. I changed the COM setting in the AP V2 Driver to use the IP address and it worked fine. Now I want to go back to the normal setup described above, but for some reason the AP V2 driver COM settings are "stuck" on the IP address mode and every time I change them back to the APCC virtual COM port they revert back.

Mike


Re: Unguided Imaging with a SCT

Worsel
 

Bruce

I have a 14.5" corrected Dall-Kirkham (f.l. 2470 mm) on a non-AE 1100 in a permanent observatory.  Typical setup is an image scale of 0.4 "/pxl!

With a 200 or more point APPM model, I can go unguided for up to 15 minutes at times.  It is likely related to the Dec of the target, but I can't quantify that theory.  I have not tried Dec arc modelling yet.

Attached is a comparison of three images with the above setup.  "Corrected tracking" = using the APPM derived model.

My conclusion is that, while unguided at this focal length is achievable, the real goal is good images.  Hence, I tinker with unguided, but I usually guide.  OAG and PHD2.

With a 910 mm focal length refractor (image scale 1.5), I image unguided all the time.  PHD2 is fine when needed, but it adds a layer of potential 'disruption.'  Its all a tradeoff!

Bryan


Re: Mount slewing acceleration/deceleration profile

Craig Young
 

Hi Roland,
I have a 10A 13.8V Laboratory Bench Supply powering the mount.  It is located at the base of the pier and uses the same power cable that came with the mount.

I had a productive video call with Mike and Dave this morning and we were able to resolve all of the issues.  Most importantly, Mike was able to make a couple of CP4 tweaks which greatly improved the stopping performance of the mount with this heavy load.  We also confirmed that slew ramping is indeed working but it is much faster than other mounts.  It is also slew rate dependent so at 240X you cannot hear it, but at 600X it is definitely there.  I asked Mike if he would bring up the subject of adding a user configurable ramping time for the mount given its heavy payload, or at least be able to have AP tweak it.  Maybe specifying the load on the mount would automatically calculate the best ramp speed.

A big thank you to Mike and Dave for their excellent support.  At this point it appears everything is working okay now.

Craig


Re: Unguided Imaging with a SCT

Cal Sandfort
 

The particular focusing software mentioned when using the InnovationsForesight's ONAG is not really required unless you want to have continuous focusing as you expose images. Otherwise, you can use your existing methods. The only difference will be that the guide stars will be more or less in and out of focus because of offsets from different filters but guiding algorithms typically handle this very well.


Re: Unguided Imaging with a SCT

Bruce Donzanti
 

Without in a permanent setup.


Re: Unguided Imaging with a SCT

Bruce Donzanti
 

Thanks, Wade.  I understand perfectly how the so-called "locks" (not really locking) work and have been using the Celestron OAG for several years.  It works well and I get excellent star shapes.  That is not the problem.  Now that I run through the entire night, there is the occasion when on meridian flip, there are no good guide stars for PHD2 as very few are present in the OAG FOV.  The Optec SMFFS is the best accessory I have ever bought for the Edge and the Optec locking knobs really tighten down the primary.  I've gone months with great success imaging throughout the night with the exception I mentioned above.  

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