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skywatcher 9x50 finder scope to guidescope

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#1 b16707

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Posted 05 August 2018 - 06:56 PM

Trying to find the most cost effective as well as reliable way of getting a guidescope onto my setup without having to buy more junk and came across the fact that you can turn this 9x50 finder scope into a guidescope (scope is the standard finder from my SW ED80).

 

Forum threads like: https://stargazerslo...r-scope-guider/. However it seems like these threads are missing some info about how to attach the webcam to the adapter or how the adapter even attaches to the scope or how the webcam can find focus? How would i attach my asi120mm if i wanted to?



#2 theoatc

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Posted 22 August 2018 - 06:53 AM

I am facing the same issue . Is there a step by step guide?

#3 b16707

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Posted 22 August 2018 - 11:23 AM

not that ive found. this is the only thread ive found that comes close: https://stargazerslo...r-scope-guider/. far from a tutorial though but i assume that whatever that adapter is is enough but thats only for those philips cams. Not sure if prime focus is involved or how to achieve that if using a camera like a zwo or something 


Edited by b16707, 22 August 2018 - 11:23 AM.


#4 theoatc

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Posted 24 August 2018 - 12:41 AM

Yeah, i ve seen this thread as well. No sufficient info. Anyone else ,please?

#5 rckgrdn

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Posted 24 August 2018 - 07:53 AM

Back when I was using a DSLR and Lacerta MGEN I used the SkyWatcher finder (from the ED80 as well) as a guidescope using this adapter:

 

https://www.365astro...inderscope.html

 

From the sounds of it, this adapter will also enable you to fit other guide cameras to the scope like a ZWO ASI120 - see the note at the bottom of the page.



#6 b16707

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Posted 24 August 2018 - 10:48 AM

and you were able to achieve focus just using that adapter? 



#7 ImNewHere

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Posted 24 August 2018 - 10:59 AM

I actually have down it with my MGEN II autoguider and it works well. Things come to focus pretty easily by just messing with the front lens cell (they do screw some). After I am home from this anime con I am at Sunday I will take a pic of how I have it set and the adapter used. Speaki g of which, I should sell my spare adapter.

#8 RJF-Astro

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Posted 24 August 2018 - 12:34 PM

I have been using the SW 9x50 finder as a guidescope for about a month now, with the ZWO ASI 120mm. It works very well, getting into focus is no problem. The adapter ring (got mine from First Light Optics) fits on the back end of the finderscope without the eyepiece/reticle. On the other side is a T-thread which fits on the camera. See pictures below:

 

 

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#9 theoatc

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Posted 24 August 2018 - 12:48 PM

What is the name of the adapter? Do u pick enough stars with the 9x50 ,for good guiding?

#10 RJF-Astro

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Posted 24 August 2018 - 01:06 PM

The one from FLO is called 'Lynx Astro Sky-Watcher 9x50 Finder to T Adapter'. Telescope-express.de also has one, it is called 'T2 Parfocal Adapter for autoguiders to Skywatcher 9x50 finder scopes'. I don't know an American source, but I am sure it can be found.

 

There have been plenty of stars on al my targets yet in the past month that I have used it (about 12 sessions). I haven't had any guiding issues.


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#11 b16707

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Posted 24 August 2018 - 01:32 PM

wow. wished this thread was this lively when i first started it and before i put up my skywatcher ed80 for sale!


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#12 l_stoian79

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Posted 12 July 2019 - 02:06 AM

I have been using the SW 9x50 finder as a guidescope for about a month now, with the ZWO ASI 120mm. It works very well, getting into focus is no problem. The adapter ring (got mine from First Light Optics) fits on the back end of the finderscope without the eyepiece/reticle. On the other side is a T-thread which fits on the camera. See pictures below:

Hi RJF-Astro

 

Did you managed to get the camera in focus? I also tried exact same setup as you, and somehow I didn't managed to get the camera in-focus (not enough in-focus travel). I have to try again this evening, not enough time yesterday evening to study in depth, but seems that I need 2-3 more millimeters travel.


Edited by l_stoian79, 12 July 2019 - 02:14 AM.


#13 Brianor01

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Posted 12 July 2019 - 09:17 PM

Hi RJF-Astro

 

Did you managed to get the camera in focus? I also tried exact same setup as you, and somehow I didn't managed to get the camera in-focus (not enough in-focus travel). I have to try again this evening, not enough time yesterday evening to study in depth, but seems that I need 2-3 more millimeters travel.

Hi l_stoian79,

 

Have you tried adjusting the focuser at the front end of the finder scope bring the focus in?  It is a helical focuser.


Edited by Brianor01, 12 July 2019 - 09:18 PM.



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