开云体育

On Fri, Aug 23, 2024 at 06:38 AM, Daniel wrote:

In this case PEC is not correcting the primary error (240 seconds) which is in fact doubled. I suggest to try to reprogram the mount with the PEC curve inverted.?

In this case PEC is not correcting the primary error (240 seconds) which is in fact doubled. I suggest to try to reprogram the mount with the PEC curve inverted. Before the PEC, as you say there is a little improvement in terms of 76 second error but not much. What did you do to adjust the SLW??

?

Regards,

Daniel

Here are the two logs after RA worm block tweaking - slight improvement. Thoughts on the data?

?

Thanks,

Ken

Thanks for the feedback. I appreciate it.

?

Just watched the Losmandy video on meridian flips. I will take a good look at the related limit settings. I will also target something crossing the meridian and do an autorun and see if it works. Seems to me the ASI app and the mount need to agree on the need to flip, or the goto issued after crossing the meridian won't change anything. Last night I was well past 90 on the west side, when it should have been on the east side,

?

I use USB as well.

On Thu, Aug 22, 2024 at 12:13 PM, Ed Harp wrote:

Which software makes this choice?

The ASIAIR issues commands, such as the Go-To X sequence, to which the mount responds according to the user-defined Limits. Objects only reachable on the East and West necessitate a Meridian Flip during Go-To slewing if approached from the opposite side. However, for objects in proximity to the Meridian, the necessity of a flip may vary based on the user's specified Limits.

?

The movement as described suggests a limited limit overlap with the OTA initiating the slew on the West Side. Due to these limits, the target is only accessible on the East Side, yet close to the West Limit. Consequently, the mount flips to the East Side and starts tracking towards the West Limit. Shortly thereafter, it encounters this limit. Should the ASIAIR be in Autorun or Plan mode at that time, it may execute, if set, a Meridian Flip process in this vicinity, ceasing tracking and waiting for the target to drift before flipping. Otherwise, it would continue tracking to the limit, triggering the Limit alarm.

?

?

With my air, usually start the mount, do a Cold Start, and then start the air and connect.? I use USB, by the way.??

?

As far as guiding. I have never got numbers that low so can't give you much advice.? I will say it's very sensitive to calibration, and the Air will sometimes accept a wonky calibration.? ?So youbsre on the right track by re calibrating when guiding is strange.?

?

For the go-to, those last few arc minutes of slew happen slowly.? You may not think the mount is moving, but it's going very slow to center up.? Just wait a few 10s of seconds.? I think you can also adjust the speed of those moves in the hand controller.??

?

For homing...did you set the home position via the hand control or web interface???

?

Also, mine will never confirm back to the air that it reached home.? For that reason, if I am doing more than one target in a night I will go directly between them instead of home in between.? ?

?

I don't know how to directly answer your last question.? But my understanding is that the Air uses its location and time settings for the sky atlas.? Sends coordinates of the target to the mount, which then uses its location time and understanding of its current pointing to calculate the move.? So if it's going to the wrong side of the sky or pointing at the ground that usually means the time or location is wrong somewhere, or a clutch slipped or something where the mount is not physically pointing where the controller thinks it is.?

?

Brian

One other issue I forgot to mention.

?

Very early this morning a run of four hours was over and I had set up "autorun" to move the mount to home after. It did not move at all.

?

Then I slew to another object to get a few shots and it slewed on obviously the wrong side of the pier. Even hitting the limit on that side. Which software makes this choice? The Gemini or the Air?

I have been mostly using my month old G11G with NINA, but started trying the ASIAIR this week. Overall, going well and getting good subs. But there are quirks that I would fix if there is a way.

?

1. moving the mount. I find that I need to power cycle the mount with the app running before the app thinks it can move the mount. not a big deal, just have to remember the order. Starting the app with the mount already up and running hasn't worked for me so far.

?

2. GOTOs generally happen, but the behavior in the ASIAIR app's sky atlas isn't reliable. Sometimes it seems to wait for moves that the mount seems to have completed. I stop the slew and tap the goto button again and it figures it out.

?

3. guiding is pretty good, last night running well below 0.4" but occasionally when I first start up guiding DEC will run a bit wide back and forth. About 10 minutes or so. Recalibrating and starting over tends to clear that up. I am not manipulating any settings. I also fuss over the DEC worm. I am using machine tools to measure how much back off the worm gets and try to reliably tension the spring holding it down.

?

Anyway, things like that. If anyone has any tips on using this mount with the AIR I would love to hear them. I do prefer to use NINA, PHD2 etc. most of the time but sometimes a simple setup is nice.

Thanks Paul - will have another look at the RA worm block again. Maybe things changed from the first L6 PEC work. The skies were clear here too so I may just check that again - purposely put the ASI071 on the unit to help PEMPRO also so camera should not be the weak link.

?

Thanks,

Ken

I'm curious if there has been any further progress here?? It does looknlikenits way obershooting Dec, possibly due to backlash over compensation.?

?

Brian

On Mon, Aug 19, 2024 at 11:08 AM, Oberon510 wrote:

I just redid my PEC training of my G11G mount with PemPro last night and got some odd results. I am not sure what to make of the results so hoping one of the Group could have a look at the attached logs and venture an opinion.

?

The night sky was very clear and I had no issues with the mount (snags etc) that I know of.

Backlash in RA is not a problem, the RA motor does not need to reverse directions, so you don't need to tune the mount to lower backlash in RA.? Again, I'm no expert, but if your current guiding performance is good enough for your needs (e.g., no subs have to be discarded) I would'nt bothering in tuning the mount.?

?

Regards,

Daniel

On Mon, Aug 19, 2024 at 02:01 PM, Daniel wrote:

Your primary 240 second error is quite low. How is guiding ??

My guiding has been very good but I did notice a bit of backlash so I will adjust the SLW and redo the PEC . Thanks for the suggestion.

?

Ken

Hi, you have a very high 76 second error that cannot be corrected by PEC.? Your primary 240 second error is quite low. How is guiding ??

?

Take the following with a grain of salt as I'm no expert,? but in my G11 with SLW loosening the back off screw of the SLW tends to lower the primary error but increases the 76 second one. May be the SLW is too loose ??

?

Regards,

Daniel

Hi,

?

I just redid my PEC training of my G11G mount with PemPro last night and got some odd results. I am not sure what to make of the results so hoping one of the Group could have a look at the attached logs and venture an opinion.

?

The night sky was very clear and I had no issues with the mount (snags etc) that I know of.

?

Thanks,

Ken

?

G11G

ASI071MC main camera

Mains power.

?

Kenn,

?

The stylus pens work much better than touch by hand for me as it is for most folks I would think. You can get a response with your fingers, but you need to be extra careful with centering the touch right over the intended button. Relative temperature between the nighttime air and body temperature may have something to do with it. But it also has to do with the static or electric charge on your fingertips which can vary hour by hour. You can get a dozen pens pretty cheap on Amazon and elsewhere and just keep a few within reach.

?

Good luck,

?

John

--

_____________________________________________________________________________________________________________________________________________________________________________

Losmandy G11G2 on pier; refurbed Losmandy G11 with OnStep controller; SkyShed design roll-off observatory; ZWO ASI2600MM-P; ZWO ASI071MC; Sky-Watcher Esprit 100 ED with field flattener; Celestron C925 Edge HD with 0.7XFR, William Optics Zenithstar 61 APO; PHD2, NINA, Sequence Generator Pro and PixInsight user

Been there done that............But a good suggestion for everyone.

?

Kenn

New G11 owner here…

When I got my G11 earlier this year I noticed that the HC didn’t always respond the same way when I touched the screen. I bought some inexpensive iphone/ipad type styluses at Walmart to use with the HC and haven’t had the problem since.

?

Clear skies.

KW

Since my last posting on this subject, I have an update.

During the Winter I was having the same issue, touch screen not responding, so I started unplugging the hand controller (HC) from the Gemini II and taking it inside house. When I plugged the HC back in and the touch screen responded. Now during the warmer months that touch response no longer worked so I reset the chip inside the HC and reseated the touch screen. Problem still existed because I continued to unplug the HC and taking it inside.?

?

One night the touch screen responded and I forgot to dethatch the HC and the next night again I had luck with the touch screen responding once again. So for the last two weeks I have left the HC plugged in and everything is 'fat and happy' with the touch screen responding.?

?

Fingers are crossed for my continued success with the touch screen responding.

?

Kenn?

Thanks All

?

I haven't yet managed to look at asiair.? I spent some time on Tuesday evening and did manage to locate the moon - using the azimuth and altitude knobs. I foolishly thought I'd try a photo so I swapped the eyepiece out and couldn't find the moon again - no matter how hard I tried. But I'm happy to make a good start. It was a good way off after doing a goto.

Today I refined the altitude knob, and although I have an online compass it's seems a bit temperamental. The scope seems near to magnetic north so we'll see how we go

Anyway - I'll try later.

?

?

?

?