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SW 150mm ED DX 3.4” focuser help

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16 replies to this topic

#1 dougspeterson

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Posted 12 March 2020 - 08:06 PM

I am dealing with a Skywatcher 150mm ED DX, the deluxe version w 3.4” focuser used on the Esprit line. The shaft at the single speed knob is bent causing cyclical scraping. I put in an email request for help from Skywatcher, apparently no phone to call.

 

What are your experiences? Obviously mail to a depot that does repair, replace the shaft, would be ideal. I hate to think what a new focuser would cost. Anyone? Experiences?



#2 tonyt

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Posted 12 March 2020 - 09:00 PM

You could ask for a replacement pinion assembly to minimize postage. It's easy to fit or remove, with 4 push/4 pull screws as shown in the picture of an Esprit 80 focuser. You need to carefully adjust the pinion/rack mesh such that the pinion isn't forced against the rack, but also to minimize backlash.

 

2.JPG


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#3 aa6ww

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Posted 13 March 2020 - 03:46 PM

The Skywatcher 150mm ED DX is an awesome refractor with the deluxe package. Hope you get it up and running before the observing season is in full swing.

Good luck!

...Ralph

I am dealing with a Skywatcher 150mm ED DX, the deluxe version w 3.4” focuser used on the Esprit line. The shaft at the single speed knob is bent causing cyclical scraping. I put in an email request for help from Skywatcher, apparently no phone to call.
 
What are your experiences? Obviously mail to a depot that does repair, replace the shaft, would be ideal. I hate to think what a new focuser would cost. Anyone? Experiences?



#4 dougspeterson

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Posted 13 March 2020 - 06:01 PM

Update from Sky-Watcher:

not in stock. will contact factory, get back to me with price and delivery. Unlikely to hear over weekend.


Edited by dougspeterson, 13 March 2020 - 10:14 PM.

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#5 dougspeterson

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Posted 20 March 2020 - 06:20 PM

Update: SW Support is quoting $145 for the pinion block assy (as above, we sent them the photo below).

 

They are still waiting for an answer from the factory in China on delivery. The virus has been mentioned. I am placing an order as soon as they tell me how.

 

I have not received any response to the availability of a complete focuser. I think that means no.

 

aa6ww, yes it is a great scope indeed

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Edited by dougspeterson, 20 March 2020 - 06:24 PM.

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#6 junomike

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Posted 20 March 2020 - 07:03 PM

Until you get a replacement, try moving the scraping single speed knob away from the housing.  If that doesn't work, maybe remove it altogether and just use the other side until the replacement arrives. 



#7 tonyt

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Posted 21 March 2020 - 06:11 PM

Considering the high quality of the parts $145 seems very reasonable. I assume this is a second hand scope, not a warranty issue?



#8 dougspeterson

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Posted 23 March 2020 - 01:18 PM

Shipping damage by fedex non warranty.

 

Support quotes 60-90 days. So I am trying to get ordered.

Removing the single speed knob allows the dual side to work, no scraping, temporary fix

 

I asked about a complete focuser, they demurr, suggesting buy a moonlite.



#9 tonyt

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Posted 23 March 2020 - 04:58 PM

They really should have some parts in stock in the US. It's worth waiting for the part though - the Esprit focuser is very nice when properly adjusted, better than a Moonlite imho.

 

I asked about buying the Esprit focuser for my base model Evostar 150ed and was told it's not available seperately. Skywatcher also said the tube adapter was a little different between the two models. Fortunately the WO 3.3" R&P fit straight on.



#10 Thava

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Posted 23 April 2020 - 05:31 PM

Hi, I have a SW Evostar DX 150 and I would like to adapt a ZWO EAF ( Electronic Automatic Focuser) https://astronomy-im...product/zwo-eaf but i couldn't find a way to remove the focuser knob to do so. The Zwo EAF can only be coupled to the Pinion shaft of the focuser. I appreciate any help on this please.

 

Thank you.



#11 dougspeterson

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Posted 10 May 2020 - 09:27 PM



tiny allen set screw, turn knob until its visible, its very far towards inside, then pull off knob

#12 jgiamma

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Posted 02 June 2020 - 02:42 PM

I think the DX focuser is a mess. I bought an ED DX and found that the fine focusing knob was slipping. I'd turn it, and it would move the focusing in/out for a bit, then it would stop moving it. I'd turn it, and nothing would happen. (The regular coarse knobs worked fine. Just the fine knob slipped.)  I sent it back to SkyWatcher. They did some adjustments and sent it back to me. Now, it was much worse. The coarse knobs would turn unevenly (little resistance, more resistance, little resistance...) as I turned it. And the coarse knob opposite the fine knob would precess/wobble when it turned.  

I told them I wanted a new focuser.  They said they didn't have one available, so they would send me a new scope.  A bit excessive, but okay.  The new scope arrived, I shipped back the old one, and I started using it and... the fine focus knob started slipping again!  Does anyone know if there's an adjustment that will stop the slipping? I think it might be a defective design. I like the focuser otherwise... It's big and strong. It just has this one issue...



#13 dougspeterson

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Posted 28 August 2020 - 03:43 AM

As a followup SW shipped the replacement part a couple weeks ago and everything is fine


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#14 bob midiri

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Posted 30 August 2020 - 07:04 PM

Help  I just picked up one of these 150 ED Evostar DX used. The 3.4" focuser  is baffling to me, I cant seem to find any info on it.  I heard that its a rotating focuser. I turned it CW and all it does is get loose, so I turn it back CW to tighten. Then there is this lever on the underneath side , move it one way it gets tighter, other way looser but I can still turn the focuser knobs and the draw tube moves ? So what is the purpose of this lever? Any help would be greatley appreciated. I was hoping it was a lock so that when doing photgraphy the focuser wouldnt move after I would get my DSLR in focus. Thanks in advance Bob

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Edited by bob midiri, 30 August 2020 - 07:49 PM.


#15 jgiamma

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Posted 16 September 2020 - 02:02 AM

I'm going on six months with the focuser issue (see jgiamma above). I'm at my wit's end. I can't get them to take ownership of this problem. Maybe it's Covid, but their customer support is awful. I bought it through Woodland Hills, and I've got them banging on SkyWatcher, but... still nothing.  Recently they said "send it back".  I've already sent it back once, and it came back worse. So they sent me a new scope, and it had the same problem. I finally said "Give me credit for the focuser, and I'll buy an upgraded one."   Still crickets. I spent $3000 on this thing six months ago, and it's never been right. Any suggestions, anyone?



#16 skyward_eyes

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Posted 16 September 2020 - 02:33 AM

The focuser that was sent back was in perfect working order when it left our facility. We would never ship a defective item back, that does no good for anyone.

Nothing was ever stated to us that there was issue until a week or to ago by the dealer. If we don’t know there’s an issue there’s nothing we can do.

We are here to fix or replace the focuser. Sending it back is what we need to do and a label has even been sent to you for return with no word back. We are working to obtain a replacement focuser for this as we speak.

Rather than speak through the dealer as a point of contact and waiting for word to be sent to you just work with us directly. We would rather this be taken care of then dragged out for no reason. This issue has gone on for too long because of delayed responses.
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#17 junomike

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Posted 16 September 2020 - 05:53 PM

Sounds like things will get rectified one way or another.

 

If the OP still finds the Focuser to not be meeting their needs (and there's nothing wrong with it) the best solution would be to sell it and use the funds to upgrade to a premium Focuser as that sounds like what he really wants.




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