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WD-17S harmonic equatorial mounts servo motor direct drive

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#51 Peteram

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Posted 17 August 2023 - 05:22 PM

Hi everyone,

 

I just took delivery of my WD17 and I am quite thrilled with this little mount so far. It was a bit smaller than I expected, and it looks very well built. I used a sturdy photo tripod with a bowl and a fairly wide base and it fit the mount almost perfectly. So far I don’t see any reason to get the ZWO one. I also got the little extension pier so it sits a little safer on top of the tripod.

I first played with it in the house to see what it would do, without a telescope on top. I connected it to ascom, asiair, phd, skysafari on my IPad, all without a single problem. The little handcontroller is pretty handy too. I got mine wired because of shipping restrictions and I am going to keep it that way. I don’t think I’ll be using it much, but it may be handy at some times. I also connected my phone wirelessly to to mount and that worked as well. It is an android phone with an Onstep app on it. I already know Onstep as I use it on my large mount as well, so that made things a bit easier. I used Asiair to sync settings to the mount which works fine for coordinates but I was not sure it also updated the time as Asiair does not say that it does, just coordinates. However once you put the mount outside the GPS will do it for you and it worked perfectly. Slewing the mount is extremely quiet, you can hardly hear it move, seems very smooth. I only had about an our of starry sky, so I decided to put it out and it was setup in no time at all, no balancing or anything just put on your telescope and go. I used a small refractor and guider on top of that. The mount ofcourse could easily handle it without a glitch. I did polar align it with the asiair and that was very easy as well, the controls on the base are quite smooth and easy to adjust especially altitude.When I got it under 10” I decided to do some goto’s , that also worked very well, no problems at all and only small corrections after the plate solve, put everything smack in the middle of the fov. 

But I am sure, like everyone reading this, I was really interested in guide performance. So I put it on a star close to my meridian to calibrate with the asiair. It was done in a few minutes and I left it guiding for a few minutes at default. It resulted in a pretty smooth run, with combined rms of about 0.4 with deviation both up and down around that. That was without any tweaking of the mount. The one thing I could not find out was the mount’s guide speed, you cannot set it in the handcontroller, nor in the ascom driver, nor in the Onstep Web interface as it is not working for this mount. But guiding was really pretty good out of the box and with some tuning you might get better numbers. I will be trying that soon.

After the session I let ASIair send the mount home and that did not work well. The mount slewed to some random position and said that it was at home, which it wasn’t. Then if you start it up again, it thinks it is at home so your goto’s will not work. Easiest thing to do then is slew to a position where stars are visible and platesolve, that way you recover its position and you can go from there. I had to get used to the fact that I could not manually move the mount. It is quite stiff and I suspect the a small scope will stay where it is if the power to the mount fails, it has got braking on both axis. A bigger scope may be an issue, but I don’t think so, but haven’t tried it either.

So far I am very happy with this little mount. I am expecting it to do real well. I will report here when I have some more information. I will also take some images and post them here for those interested. 

By the way I ordered from Robert here on the forum, and it all went very smoothly although shipping was a bit of an issue, but that was a customs thing in Europe and in no way the sellers fault.

 

Cheers,

 

Peter


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#52 Sheridan

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Posted 18 August 2023 - 07:29 AM

Thank you Peter that was very helpful.

I wonder how long it would take for one to get to the US ie. Houston

Edited by Sheridan, 18 August 2023 - 07:30 AM.


#53 Peteram

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Posted 18 August 2023 - 12:24 PM

Not very long I would think. Just ask Robert here. You can order directly from him and he will have a pretty good idea I am sure.


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#54 katana_750

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Posted 01 September 2023 - 12:46 PM

Is there any way you could provide us a users manual in English? There is not one on the website.

 

Thanks


Edited by katana_750, 01 September 2023 - 12:46 PM.


#55 Peteram

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Posted 01 September 2023 - 01:58 PM

Well officially there isn't one. You can just use google translate to translate the Chinese version. Works quite well actually. According to the manufacturer there is an english one in the making. 



#56 Sheridan

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Posted 02 September 2023 - 08:42 AM

I ordered mine this morning.   Looking forward to using it.  Should be here in about 15-20 days.  cool.gif



#57 Peteram

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Posted 02 September 2023 - 08:56 AM

I ordered mine this morning.   Looking forward to using it.  Should be here in about 15-20 days.  cool.gif

Good for you, I like mine very much so far!


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#58 Robert008

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Posted 08 September 2023 - 09:57 PM

Is there any way you could provide us a users manual in English? There is not one on the website.

 

Thanks

http://218.23.227.15...z2/WD17S Manual

 

The English version of the user manual has been uploaded



#59 katana_750

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Posted 09 September 2023 - 06:23 AM

Thank you. I have one on the way and like to read up on it before it gets here.

#60 lemmu

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Posted 13 September 2023 - 02:23 PM

I would like to know what kinda INDI driver the mount using with Ekos?



#61 Robert008

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Posted 16 September 2023 - 02:49 AM

LX200 OnStep

 

I would like to know what kinda INDI driver the mount using with Ekos?


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#62 lemmu

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Posted 16 September 2023 - 05:45 AM

Ok, thanks for claryfing. Just last question, if there will be EU vendor for any time soon? Or do I have to order myself? Can you send me an email regarding shipping to EU? I'm considering between HAE 29 and WD17. HAE would cost me about1500€ w/o VAT


Edited by lemmu, 16 September 2023 - 05:47 AM.

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#63 Sheridan

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Posted 16 September 2023 - 05:56 AM

I ordered mine directly from Robert. You can also order it from AliExpress.


Edited by Sheridan, 16 September 2023 - 06:11 AM.


#64 katana_750

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Posted 25 September 2023 - 05:00 PM

Mount made it today. Took about 5 days longer then it originally said, but not a big deal. 10 Day forecast not looking good to get the mount out and test it, but I will update on the performance when I can. I'm looking forward to testing it and comparing it to the  HEM27 that I have now.


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#65 Sheridan

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Posted 26 September 2023 - 12:20 PM

Mine was delivered and it sucked in several severe thunderstorms  Roflmao



#66 Sheridan

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Posted 29 September 2023 - 06:57 AM

Here I have the 17 mm mounted on it. I have not done a proper imaging session with it but I have been testing it. So far I'm really liking this thing. In the background you see my mount for the LX200. It looks ancient compared to the new onelol.gif I still need to clean up the cables a little bit more.

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  • 2023-09-23-19-39-59-417.jpg

Edited by Sheridan, 29 September 2023 - 07:01 AM.

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#67 Brad Templeton

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Posted 01 October 2023 - 01:48 PM

Seems to bear a lot of physical similarity to the Umi-17 Lite, though that says it is a stepper motor harmonic and the WD17 says it is servo.  The WD17 is more expensive.        Unknown in the connector panel looks the same, I have not found a photo of that panel which is rather odd to say the least.   Roughly similar specs.

As we know, it is quite common to see Chinese products that look almost identical show up under different brands.   Unknown if that is the case here or not, but either way we are seeing more mounts of this class show up.      Since most people outside of China are reluctant to buy expensive mounts without some objective opinion to rely on, all these vendors need to thrust mounts as soon as they can at well known astro reviewers.   I was pleased to see that WD will get one to Cuiv-the-lazy-geek and I await his review.     Ideally one wants to see multiple parties trying out the mount and reporting that it and the company were of good quality.   (Even better if they just bought the mounts so that we know they didn't get special treatment.   I have not seen it much, but a good system would be for vendors to announce that if a well known reviewer buys their product from any vendor, then they will take it back for full refund including 2 ways shipping as long as the reviewer has a demonstrated audience or is on a list of accepted reviewers.    Of course, many vendors just send products to reviewers and even let them keep them/sell them, though the very top reviewers don't allow that as it can appear to be a bribe to get a review/get a good review.)



#68 Peteram

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Posted 02 October 2023 - 05:05 AM

Seems to bear a lot of physical similarity to the Umi-17 Lite, though that says it is a stepper motor harmonic and the WD17 says it is servo.  The WD17 is more expensive.        Unknown in the connector panel looks the same, I have not found a photo of that panel which is rather odd to say the least.   Roughly similar specs.

As we know, it is quite common to see Chinese products that look almost identical show up under different brands.   Unknown if that is the case here or not, but either way we are seeing more mounts of this class show up.      Since most people outside of China are reluctant to buy expensive mounts without some objective opinion to rely on, all these vendors need to thrust mounts as soon as they can at well known astro reviewers.   I was pleased to see that WD will get one to Cuiv-the-lazy-geek and I await his review.     Ideally one wants to see multiple parties trying out the mount and reporting that it and the company were of good quality.   (Even better if they just bought the mounts so that we know they didn't get special treatment.   I have not seen it much, but a good system would be for vendors to announce that if a well known reviewer buys their product from any vendor, then they will take it back for full refund including 2 ways shipping as long as the reviewer has a demonstrated audience or is on a list of accepted reviewers.    Of course, many vendors just send products to reviewers and even let them keep them/sell them, though the very top reviewers don't allow that as it can appear to be a bribe to get a review/get a good review.)

It is just this direct drive servo, that makes all the difference and makes it very different from all the other mounts out there. Much better in my opinion. Far less prone to reduction gear backlash etc and therefore much more precise and far easier to guide.



#69 sctchun

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Posted 02 October 2023 - 02:45 PM

Looking at the English instruction manual, I noticed that the ST-4 port is also used for the wired smart controller.  Is there a way to use that port of both simultaneously, either through some sort of Y-adapter or a ST-4 port on the controller?

 

Why, when I'm doing solar work, my solar guider uses the ST-4 for guiding and I would like to manually slew my scope to the sun after doing a goto.


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#70 hjd1964

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Posted 03 October 2023 - 09:53 AM

Looking at the English instruction manual, I noticed that the ST-4 port is also used for the wired smart controller.  Is there a way to use that port of both simultaneously, either through some sort of Y-adapter or a ST-4 port on the controller?

 

Why, when I'm doing solar work, my solar guider uses the ST-4 for guiding and I would like to manually slew my scope to the sun after doing a goto.

No, and never do that.

 

When you plug in a Smart Hand Controller that "ST4" port is reconfigured into synchronous serial interface that is not ST4 compatible (!)



#71 jrussek

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Posted 08 October 2023 - 04:05 PM

Hi!
I'm very interested in this mount as well. From the thread I gather some of you have been in possession of one for a bit now.

Any updates on how you like it? Any more drawbacks you have discovered?
How does it deal with a heavier weight?



#72 katana_750

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Posted 08 October 2023 - 07:18 PM

I've had non-stop cloudy weather since I received my mount. The only thing I can report is that it attaches directly to the iOptron Carbon Fiber Tripod. Once I can get some solid data, I will post it here.

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  • 20231008_191227(1).jpg

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#73 Robert008

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Posted 10 October 2023 - 05:45 AM

Sharing some German users' photography with WD-17S mounts

 

S58eadacfa76240e7baab9c0dd7cf9bf4L.jpg

S975643f932dd45b3add9845aae0e6067N.jpg

S258fb9bbf2444874883a09011fb1d23cM.png

Sbab21032ef314d89a213ecf0ec851dd6p.png


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#74 Stefastro66

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Posted 11 October 2023 - 10:54 PM

Hi, Robert. Nice to see my pictures here on CN.
I received the mount in first days of september and shot any Objects since. My mainscope is a Sharpstar 61EDPH III, sometime i use the Skymax 127 for small objects as dual setup on the mount. I use Asiair Plus to control it. The mount works very well Link to my main Setup:https://photos.app.g...4n6kjjn31RiAAbA Link to guiding with this mount:https://photos.app.g...RLP3u6ijpKmHNp8

Edited by Stefastro66, 11 October 2023 - 11:36 PM.

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#75 Robert008

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Posted 12 October 2023 - 09:34 PM

Haha, thank you for sharing,Looking forward to more photography works from you

 

Hi, Robert. Nice to see my pictures here on CN.
I received the mount in first days of september and shot any Objects since. My mainscope is a Sharpstar 61EDPH III, sometime i use the Skymax 127 for small objects as dual setup on the mount. I use Asiair Plus to control it. The mount works very well Link to my main Setup:https://photos.app.g...4n6kjjn31RiAAbA Link to guiding with this mount:https://photos.app.g...RLP3u6ijpKmHNp8




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